Gas Gauge Stuck On Full

Fuel level gauge. Fuel gauge stuck on 1/4-Empty Well we have had this tdi for about a week now(our second one), its a 99. i have been having some issues with my fuel gauge. I went ahead and filled the tank, only took 3 gallons BTW. Whenever I fill up my fuel gauge needle would stay stuck on Full then after some driving then it would shoot down to maybe 3/4. Any knowledge would be much appreciated. Gas Guage says half tank, but the tank is empty :( I assume my float is stuck. If the circuit is powered up and intact, the fuel gauge will go to full if you unplug the wire from your sending unit and ground the end of the wire. About 2 weeks later gas gauge was stuck on full after a full up. Thanks in advance for your help on the. Re: Fuel Gauge Stuck as Full MH has it correct. I'm thinking that the float arm is stuck inside the fuel tank, but thought I'd ask the group for any other ideas. This is a discussion on Fuel Gauge stuck on full within the General Help forums, part of the LSx Technical Help Section category; The fuel gauge on my 2002 Trans AM is stuck on full. To check the gauge, slowley move the float from full to empty. I read some previous posts but nothing in regards to a sticking. It's a brand new gauge, brand new 66 Mustang sending unit in a new 66 Mustang gas tank. you know that stupid little rotary fuel gauge by the fuel cap ? I emptied the tank this summer and I just fueled it up and it is stuck at empty. Fuel gauge stuck on full. Re: What would cause a fuel gauge to peg way past full? did you tear into it to make sure it just wasnt loose or disconnected write on the sender itself or maybe the float is stuck past full not even touching the contacts, If i read right you didnt have to open it up at all, it came fully assembled, and the grey is most definatley pump and purple is gauge, i would definatley check ground. This is not a complete set of data as this type of information is not readily available. Hi im trying to find some info how to fix my fuel gauge in a 1988 ford F 150 duel tank. Use a special fuel gauge resistor to protect the original 6 volt fuel gauge that will be running in a 12 volt system. Another, less common, symptom of an issue with the fuel gauge sender is a fuel gauge that is stuck on full. The fuel gauge works by detecting resistance from the sending unit. Seen multiple threads but i never saw if the gauge does not move at all. I removed the dash to check for tightness of all wires, everything appears fine. 03 injected fatboy with a stuck fuel gauge needle (pinned full). Curiously the gauge did move a littlefrom pegged all the way to just a hair below the "full" mark. It's back in the shop. When i Received the car from Dealership the Fuel Gauge shows full thank of Gas. Now my check engine light is on and saying po460. Fuel guage seems stuck at half full. Have not gotten around to fixing the problem, but it doesn't look like a difficult fix: Fuel Gauge Reads Full Always Attached are the instructions for the removal/install of the Fuel Pump/Fuel Gauge Sending Unit from the Service Manual. If it drive it to 1/2 tank according to the gauge, I had better get gas because my tank is empty at this point. One time I forgot to keep track of the last time I filled up and my car ran out of gas despite showing half full tank!. Fuel gauge stuck I will have to check the alignment of the pump and the arrow, had it installed by a local shop and took it back to them when we noticed the problem, not sure if the knew of the correct alignment of pump and arrow, will also check electrical connection at the pump to make sure contacts are clean. Any thoughts on what happened, could I have fried the gauge? I did a search of the electrical forum and only found 1 thread for gauge reading max full and it suggested bad gauge. How to determine if your boat's fuel gauge or fuel gauge sending unit is bad. This is the first time that this has happened to me. Hey guys so I have a problem with my fuel gauge. Finally one day on the way home from work, it stalled as I was doing about 70 km/h down the road. At times it will show the tank as 3/4 or 1/2. Fuel Gauge Stuck On Full 5 Answers. I think I need a new gauge ? Michael. If the circuit is open, the gas gauge will likely sit at EMPTY and never move. You shouldn't have to "drive in a smoother fashion" and certainly not your fault on a high performance rocket like this. is located? I assume either the gauge is stuck or the sender is bad but I don't know where to look. somewhere later (depending on make/model)this resistance is "damped" providing a "smoothed " voltage to meter. Have 97 Buick LeSabre gas gauge been stuck on full from day one when I bought so I thought car had full tank while I was comeing down the road I noticed car starting to stall and the gas warning light in this particular car is a red dot that blinks one time and when u see that light the car automatically cuts off meaning it's out of gas dose anyone know what issue is or what's cause the gauge. better than pushing. "On equipment that has not been used a whole lot, you could get a loose wire connection," says Kolbeck. I filled the tank, then adjusted the screw until the gauge read Full. On the way I noticed the fuel guge slowly move to the. First, check that the gauge is receiving 12. I've recently got my brothers old car which he hasn't used for a quite a while and there's a problem with the fuel gauge. My fuel gauge only reads full. And it took LOTS of fuel to fill the tank again. The problem I had was with the gas gauge and it was due to my own fault. I figured the sensor was stuck up, pulled out both units and NOTHING was binding. So i decided to see if my fuel gauge sending unit located inside the gas tank was sticking. any help will do, thanks btw, the car is a 1995 240sx SE 5spd. Troubleshooting Your Chevy Truck Gas Gauge Failure. Have you ever noticed that your gas gauge stays on full for quite a while before the needle even moves and then it moves faster and faster as it approaches empty? And then when it gets to "E" it. the dealership has attempted to fix this problem three times. It could be bad but I doubt it's stuck. Fuel gauges seem like a simple device that we would assume to be standard across most all vehicle lines. I am sure that fuel went into the car, about 43 litres in total, and I checked this today by going to a different fuel station and I could only get about 3 litres in. The low fuel light still works so, knowing approximate range per tankful, I simply zero the trip odometer every time I fill up and watch the odometer and fill up when the light comes on. I disconnected the battery for about 20 min and the gauge read correctly after that. Recently the fuel warning light has come on and the fuel gauge registers as empty despite there being more than enough diesel in the tank. However, after filling the tank, the range still showed 30 miles and the fuel gauge near empty. Is the sending unit broken or is it just bad ground connection?. It showed full and won’t go below 3/4 tank mark. Curiously the gauge did move a littlefrom pegged all the way to just a hair below the "full" mark. About 2 weeks later gas gauge was stuck on full after a full up. and it usually skips from 12 to the second fullest notch, before moving slowly. I discovered that the fuel gauge is not working. I followed notes from this forum. When I filled it up, it took 6 gallons. When disconnected and power applied the gauge should drop to Empty. If you have a 240-33 ohm gauge that is not on this list you must use 3-wire sender instead. My fuel gauge only reads full. Fluctuating fuel gauge; 9 2. Gas was at least 4 years old so I had two 55 gallon drums to receive the old gas but it only filled up one of them before running dry. "On equipment that has not been used a whole lot, you could get a loose wire connection," says Kolbeck. Shop with confidence. My 2006 Challenger 180 analog fuel gauge is stuck on full too. It pegs all the way over on the full side. How To Diagnose a Fuel Gauge Easy Not in the Book Tricks! 2jeffs1. We are the premiere place for 1st gen and 2nd gen Dodges as well as a great source for newer models as well. A faulty resistor can also cause the gauge to read empty. PROBLEM: Fuel gauge quit working light came on and stayed on empty and transfer pump of course did not work. The 2015 Hyundai Sonata has 5 problems reported for fuel gauge faulty. Another, less common, symptom of an issue with the fuel gauge sender is a fuel gauge that is stuck on full. It read full all day, when normally it is on empty by the end of the day. Does your factory temperature gauge seem to work OK? FIRST thing to do is go underneath, disconnect the gauge sender wire at the tank, and clip lead it to ground temporarily. Fuel Gauge Errors (advised from Ford) FordExcursions. I am the proud owner of a 2010 1. This is the same fuel level at which the original low fuel sender activated the indicator. I just hope dodge did a better job with the fuel pumps on these new cars. Fuel Gauge not working. Kubota Tractor Fuel gauge malfunction I was mowing last weekend with my 2910 and just as I reduced the RPM before parking it, I happened to glance at the fuel gauge and noticed it move from 1/4 tank reading (which was accurate) to above full. Fuel guage seems stuck at half full. This removes the resistance supplied by the sending unit, and should cause the gauge to swing over to the 'Full' position. I have tried to run it down to less than half and tank and fill it back up to see if that would help, but it still stays in the full position. somewhere later (depending on make/model)this resistance is "damped" providing a "smoothed " voltage to meter. Later that day it came back to normal then dropped below empty. Shop with confidence. A fuel sender wire that is open (cut or not connected) will read full tank a shorted to ground will read empty so so find that wire and ground it if it goes to empty your gauge is good you can also ohm the sender chevy is 0 to 90 ohms o witch would be full contact with ground will be empty 90 or higher will be full. both read a reference against resistance to ground. A bit of background: My fuel gauge has never been accurate. My mechanic says it's the fuel sending unit and will cost $250 to replace. While the SoC information displayed on a battery or a display screen is helpful to the user, the readout does not guarantee the runtime. Replace the sending unit if the gauge indictor moves to the full line. I have seen lots of problems with fuel gauges going to empty but mine is stuck on full and will not budge. In doing some more testing using resistors, at 56 ohms the gauge is 25% full, 106 ohms the gauge is 60% full and 156 ohms the gauge is 78% full. Shoreline Health And Rehab (FCR), a leading addiction treatment center in the US, provides supervised medical detox and rehab programs to treat alcoholism, drug addiction and co-occurring mental health disorders such as PTSD, depression and anxiety. On the way I noticed the fuel guge slowly move to the. When I turned of ignition the gauge showed 3/4 full and I thought that I had fixed it, however when I started the engine the fuel gauge needle continued to climb and went to the right hand stop. Later that day it came back to normal then dropped below empty. Where should I wire it into so that it works?. The fuel warning light comes on when it gets low so i m sure the sender unit works fine i have tested the tank sender unit and it seems to be ok as it reads a variable resistance as i move the f. My guess is the float in the tank is stuck but I'm not sure how to fix. My grounds are good my gauge is functioning, I ohm check the new sender and ohms check fine. A fuel gauge works through a series of electrical connections from the sending unit to the gauge cluster, and when one of. Many suggested a float stuck or sending unit sticking. If 3 gallons or less then the fuel gauge. In some cases the Fuel Level sending units gone bad itself, The ground from the sending unit corrodes and breaks. So any ideas on what to do?. Then go turn the key to "run" and see if the gauge heads for "full. If not, you have a wiring problem or a bad gauge. Don't go to stealer, it will charge you for IC about $1800. I can usually drive about 350 miles before refilling. Fuel gauge full then empty then full again within seconds as well as distance to empty (380 then 0 dte) They replaced the sending unit. Replacement Parts: Tank Sending Unit Sending Unit Float (only if not replacing the full unit) Voltage Regulator. Re: Fuel gauge stuck at Empty - CK35 You must have finally hit the right bumps with the tractor to get the gauge lose. Have read a few posts about about faulty fuel gauges, they all seem to be stuck on low or half way mine seems to be stuck on full after a day of off roading checked Wires around the fuel filter,. My plan was to run it almost empty then fill it with non ethanol gas at the marina for the rest of the season and for storage. I moved the float toward the bottom, gauge went to empty, pulled it to top went to full. They told me the sending unit was bad, but the part was not in stock. My understanding about having two fuel level sensor is to compute the average of two sensors. "thats strange" So long story shorthere it is Monday heading to work and my gauge is still on full Anyone run into this? What to do to fix it. Gauge moves back and forth on start of but always showing full gas. The 1997 Ford Explorer fuel gauge can be stuck on fault because the fuel float is malfunctioning in the fuel tank. I have disconnected the electrical connector at the sending unit, no change on the gauge. How I solved the gas gauge problem on my 2005 Flex Fuel Ford Explorer Difficulty: Above Average, for two reasons; 1) you wind up cutting a permanent, gaping hole into your car, and 2) you're dealing with gasoline and critical systems. The question about filling the tank and seeing even partial changes in the fuel gauge indication might help identify sender problems if there is some repeatable variations. I went to the gas station and filled up, and the gauge slowly moved up to full. This is the one if grounded should make the gauge read full (when key on - takes a minute). Later that day it came back to normal then dropped below empty. 03 injected fatboy with a stuck fuel gauge needle (pinned full). I grounded the black wire and yellow/white wires and turn the key on and nothing happened to the fuel gauge. Fuel gauge stuck I will have to check the alignment of the pump and the arrow, had it installed by a local shop and took it back to them when we noticed the problem, not sure if the knew of the correct alignment of pump and arrow, will also check electrical connection at the pump to make sure contacts are clean. the selector swith does not seem to work. You can't go by these things at all. 95 Auto Meter Sport-Comp Series Full Sweep Electric 2 1/16" Diameter Fuel Guage 0 ohms empty / 280 ohms full. I have read through several threads on this site and performed all the troubleshooting tips to no avail. The fuel gauge in my 1999 Corolla is stuck on Full. My gauges were all over the place. Wait one minute and read the fuel gauge. It may be stuck as Bill says. I just had a fuel gauge problem. I filled up my gas tank at sunoco, and after 75miles of driving i noticed something not normal with the fuel gauge. I was talking to my father the other night, who lives in Coral Springs, Florida. If I drive like an old ninny, I can get 150 miles out of 1/4 of a tank that holds 16 gallons. I read something like that on the Facebook Pontoon Owners Group. There are 6 separate gauges in the cluster and the fuel gauge looks like the other 5, so I think it is the correct one. Just bought the car, it was a known condition been this way 2 years. Gauge should read full. Does anyone know what we should check and where that item. Anyone have this problem? How did you fix it?. RE: My gas gauge is stuck on full. They ran out of gas on their Benny, while the gauge was showing 3/4 full. I ordered the fuel gauge that was supposed to go with that sender so why is it reading ful and how can I fix it? I leave for The Roundup on Wednesday!. They are wired in series so the problem can be in one, or the other, or both. I have full range of motion in the gauge and it seems to be working properly based on tests above. Fuel gauge stuck on full. Don´t know about the 94, but in the earlier models, a gas gauge stuck in the full position, meant an open circuit, a plug unplugged or a broken wire (back by the gas tank/ a branch would get stuck in there and pull the connector apart or break the wire). FULL TANK was always full tank. It will go down to about 3/4 the work it's way back up to full. Fuel Gauge Stuck On Full 5 Answers. The resistance changes as the fuel level drops. Created: 10. I'd think if it was stuck it would show the fuel level that was in it (less than 1/2 tank) when the problem started. If I remove the sending unit wire at the sending unit and ground it the gauge will drop back to empty. As is the built in Range figure that comes up in the speedometer window. My mechanic says it's the fuel sending unit and will cost $250 to replace. You can rotate it a little back and forth to help and it should pull out. My car has an automatic transmission. Also, it doesn't show full as if the tank was full - it "pegs" on the full side. I grounded the black wire and yellow/white wires and turn the key on and nothing happened to the fuel gauge. I just got a 1997 Riviera with 45,000 original miles. If the fuel gauge responds correctly, the fuel gauge and sending unit wire at this point are reacting correctly. not a good sign. So i decided to see if my fuel gauge sending unit located inside the gas tank was sticking. Yes the cruise was set about 75. Hi im trying to find some info how to fix my fuel gauge in a 1988 ford F 150 duel tank. Fuel gauge drops and gets stuck at half tank; 12 How to fix electronic and software malfunctions; 13 How. My Gas Gauge Reads Empty When It Is Full Of Fuel One thing I see and hear quite a bit of from customers is that they complain that their fuel gauge is inaccurate or acts very erratically. Renegade Gas Gauge Stuck on Empty - posted in Renegade discussion: My 2007 Renegade 800 gas gauge is stuck on empty even though the tank is full. 5 gals of gas. The sending unit communicates with the gauge on the dash, and if the ground wire comes loose, it will read full. The fuel gauge goes to the drivers side first in a solid yellow wire. The new fuel pump and installation cost $700. Wife ran out of petrol with the gauge showing plenty and the computer readout at 120Km of fuel left. diagnosing a non-working fuel gauge on zd28 Service, Repair & Maintenance. Re: Fuel gauge stuck at Empty - CK35 You must have finally hit the right bumps with the tractor to get the gauge lose. The fuel sending unit is newer, though it appears to be a cheaper quality unit. I have banged on the side of the tank to see if the float is stuck, no luck. Kubota Tractor Fuel gauge malfunction I was mowing last weekend with my 2910 and just as I reduced the RPM before parking it, I happened to glance at the fuel gauge and noticed it move from 1/4 tank reading (which was accurate) to above full. I refitted the gauge and float/sender unit back into the car and refilled with gas. 4 lx So today when my fuel was running low the petrol light came on as it should. No one wants to get stuck on the side of the road because they couldn’t trust their gauge. The fuel gauge indicates the fuel level correctly. Shop with confidence. Or, the float arm could simply be stuck high. I pulled over turned off/on the car and the needle went back to the 1/2 way mark. Ie 385 miles showed fuel fuel, 91 showed nearly empty. Use a special fuel gauge resistor to protect the original 6 volt fuel gauge that will be running in a 12 volt system. When I got the car the gas gauge was reading slightly over Full. After some searching, looks like I too will be pulling out the fuel pump and cleaning sending unit first. When I got my MF35, the fuel gauge was disconnected (AND very old). 4 easy steps to start with: The readings on a truck fuel gauge are essential for understanding many aspects of driving. Fuel gauge gets stuck on full; 11 4. My guess is the float in the tank is stuck but I'm not sure how to fix. I put a good half a tank of fuel in and drove a bunch of bumpy roads, but that didn't work. I'd be getting the dealer to show me some special help with this, if I was the one that ran out in the. Warranty, but would wait until after the season. The resistance changes as the fuel level drops. Many suggested a float stuck or sending unit sticking. Does anyone have problems with their fuel gauge. anybody knows how to trouble shoot, how to access the tank, seems like a stuck fuel float sender unit? thanks. Any thoughts on what happened, could I have fried the gauge? I did a search of the electrical forum and only found 1 thread for gauge reading max full and it suggested bad gauge. NOTE: The fuel gauge should read F (full) or above when carrying out this test step. Well here I am 6 months later and still a fuel gauge stuck at full. 3L V6) An odd issue with the Fuel Gauge: It always reads MORE THAN full. The gauge never came back up and is stuck on empty. A fuel gauge works through a series of electrical connections from the sending unit to the gauge cluster, and when one of. any help would be greatful. I know the gauge still works because the low fuel light still comes on when i'm almost out, i just can't tell how much gas i have before then?. Yesterday I noticed my fuel gauge reading almost empty, although the low fuel light was not on. It usually takes about 4 gallons or so, before it moves from the "12" mark (gallons, on 18-gallon gauge) to full, slowly. After some searching, looks like I too will be pulling out the fuel pump and cleaning sending unit first. The GM Fuel Gauge Mystery 1965 & Newer April 2, 2012 May 22, 2019 Eckler's 3040 Views Diagnosing a problem with a GM fuel gauge or sending unit can be very frustrating and part of this frustration comes from not knowing the theory behind what makes that little needle swing back and forth in your dash or console. A faulty fuel gauge resistor can send a bad signal to the instrument cluster which can cause the gauge to permanently read full. If it's just Stuck, ok. How do I fix it? I just bought a 1999 Ford Contour. If the circuit is open, the gas gauge will likely sit at EMPTY and never move. If it does not, then the odds are that the gauge or anti-slosh unit are bad. the fuel gauge sender is a float in the tank running against a coil of wire if the float has filled with fuel it wont float,first to check two wires connected to sender,pull off and touch together that sould read full on gaugeif not its the gauge at fault,if its ok youll need to get sender from tank its normall held with a big nut half turn to release,check for corrosion breaks or damage good luck. After 4 years of ownership and 270 hrs the fuel gauge on my B3030 HSDC is now stuck on full. It read full all day, when normally it is on empty by the end of the day. The GM Fuel Gauge Mystery 1965 & Newer April 2, 2012 May 22, 2019 Eckler's 3040 Views Diagnosing a problem with a GM fuel gauge or sending unit can be very frustrating and part of this frustration comes from not knowing the theory behind what makes that little needle swing back and forth in your dash or console. I would think the gauge would've dropped below full by now. My fuel gauge is not working properly, I sometimes get 2 bubbles showing on a full tank of fuel, and it stays that way all day or longer, then goes to 3 or 4 bubbles, what gives here?Sometimes I see 2, 3, or 4 bubbles on a 3/4 full tank. (240 ohm empty and 33 ohm full) Will work for gasoline or diesel fuel ; Works with DATCON, LIVORSI (or gaffrig newer than 1996), OMC, STEWART WARNER, TELEFLEX US GAUGE, AUTOMETER, FARIA, and Hardin Marine gauges. 82 miles), and noticed that the gauge was still on full. Replied by Beefy on topic 99 honda civic EX, fuel gage stuck on full You need to check the the sending unit changes resistance when you go through the sweep. Hello, you need to see the fuel pump under the back seats, maybe the gauge is blocked which is almost impossible but who knows, also check the wiring connection of the pump the problem is located there anyway. Before you try any of this try hitting the top of your fuel sender in the tank with your fist and see if the gauge moves. Low fuel warning lights are worth mentioning because they're wired into the fuel gauge. When I got my MF35, the fuel gauge was disconnected (AND very old). I don't think it's possible that the fuel sending unit could possibly be stuck in the upward position. They told me the sending unit was bad, but the part was not in stock. Another, less common, symptom of an issue with the fuel gauge sender is a fuel gauge that is stuck on full. After a day, the "Service Engine" lite came on and the fuel gauge showed "E", like when the engine hasn't started. To check the gauge, slowley move the float from full to empty. When I got the car the gas gauge was reading slightly over Full. This only works if you know for sure you are down on fuel and the float is not stuck. Check your fuel gauge fuse if the gauge's indicator stays on empty when your turn on the ignition. last weekend, my gas gauge started acting up. One thing I noticed is the 'negative' side of the cluster circuit runs to fuel gauge and instrument panel lights and those lights are always dim. 03 injected fatboy with a stuck fuel gauge needle (pinned full). I grounded the black wire and yellow/white wires and turn the key on and nothing happened to the fuel gauge. At zero ohms from the sending unit, the dash gauge should read Empty; at 30 ohms it should read Full. If it does not, then the odds are that the gauge or anti-slosh unit are bad. I tried the fuel injection cleaner trick with one bottle and it did shift the needle back down but only for an hour or so t. Her gas light wouldn't even come on. 4 lx So today when my fuel was running low the petrol light came on as it should. A:fuel gauge reading full all the time ,I had a break in the sending unit wire I used a OHM on 10x was reading zero I found break twisted wires together and it went to 3/4 tank put gas in it stayed at 3/4 tank ,took bed off turned pump went full, drove around ,it went down my issue was a break in the sending unit and a stuck float ! the reading. Well like the title states, my fuel gauge needle got stuck on full as of today! it was working fine untill i turned it on this morning, i didnt even fill up the tank? any of you guys ever have this problem? any help is appreciated I have a 03 yukon, just hit 70k with no engine mods whatsoever. Created: 10. Hi everyone, Over the weekend I drove my 1. Fuel gauge not working. The fuel gauge is stuck past the full mark although it looks good to always see a full tank its a little uneasy not knowing just how much fuel is in the tank. turn it off, and the gauge drops to empty. 02-06-15, 03:37 AM #7. Fuel gauge gets stuck on full; 11 4. But today, the low fuel warning light came on and it appears to be functioning properly. Does it tend to be one over the other?. fuel gauge not working. Renegade Gas Gauge Stuck on Empty - posted in Renegade discussion: My 2007 Renegade 800 gas gauge is stuck on empty even though the tank is full. My car has 98000 miles. I pulled over turned off/on the car and the needle went back to the 1/2 way mark. Ie 385 miles showed fuel fuel, 91 showed nearly empty. This is the one if grounded should make the gauge read full (when key on - takes a minute). Troubleshooting Your Chevy Truck Gas Gauge Failure. Diagnosis of Stuck Fuel Gauge- Is it Gauge or Sending Unit? 67-72 chevy and gmc c10 gas gauge problem - Duration:. First, check that the gauge is receiving 12. Gauge reads a bit past Full 90% of the time, but does fluctuate to empty and back every so often, so I know the needle is not stuck on the stop pin. Use a special fuel gauge resistor to protect the original 6 volt fuel gauge that will be running in a 12 volt system. From some online research, this seems to be common with these cars and while some people go chasing all sorts of gremlins, it seems that usually replacing the gauge cluster is what fixes the issue for most. Fuel level gauge. I followed notes from this forum. If you have a 240-33 ohm gauge that is not on this list you must use 3-wire sender instead. While the SoC information displayed on a battery or a display screen is helpful to the user, the readout does not guarantee the runtime. When I first turned on the car, I got the "Very low fuel" warning and the gauge was on empty, but later the gauge went straight to full and is now stuck there. This is a discussion on [SOLVED] Ford Ranger Fuel gauge problems within the Automotive Support forums, part of the Tech Support Forum category. fuel gauge pegged at full, even with key off?? Under the hood there is a ground that isn't connected to anything except the passenger fenderwell near the injector resistor pack, I forgot to hook this up during the recent motor swap but I can't remember taking it off. Gauge reads a bit past Full 90% of the time, but does fluctuate to empty and back every so often, so I know the needle is not stuck on the stop pin. My 2006 Challenger 180 analog fuel gauge is stuck on full too. Fuel Gauge Update To recap: My fuel gauge was stuck on full from the day I picked my 2005 Titan. Gauge pegs itself to the right, above full, some possibilities are: Brown wire is off back of gauge. For the third fill up, I got Ethanol free marine fuel at the marina. A few cosmetic things that are pretty normal for a 16 year old car. 1999 ford mustang coup gas gauge stuck on full. I had the fuel pump replaced in October 2012. My bike sat for several years before I bought it and I guess that is why it was stuck. It usually takes about 4 gallons or so, before it moves from the "12" mark (gallons, on 18-gallon gauge) to full, slowly. Well, gas guages generally are a variable resistor. Many large transport aircraft use a different fuel gauge design principle. Get the job done with the right part, at the right price. any ideas why a 2000 Buick Century's fuel gauge in the dashboard would stay at "FULL" all the time. Gauge pegs itself to the right, above full, some possibilities are: Brown wire is off back of gauge. the float/arm rises/falls making contact (hopefully) on exposed high resistanc wires on a vertical post. A bit of background: My fuel gauge has never been accurate. Did the 4th fill up at another marina today - fuel gauge still stuck on F. The gas gauge has remained on "full" even though we have put 12 hours on the engine. It would never go any lower. All GM fuel gauges from the early 1930's to the 1960's operate on a 30 ohm scale. If the fuse is good, join the sending unit connector to ground. Her gas light wouldn't even come on. Vehicle: 2000 GMC Safari SLT (4. Mechanic suspected it's the sender unit and said the repair could be expensive. Fuel gauge was showing tank 3/4 full, but after filling it up I discovered it was appx. On my 135 the fuel guage does not read untill the engine is at 1300RPM thats when the dynamo output gives out voltage and the circuit comes to life and charging takes place. Haven't driven this '88 LCS much in the last few months. Many suggested a float stuck or sending unit sticking. Gauge goes all the way over to 3 o'clock way past full. Your gas gauge requires resistance to operate properly. I've been dealing with these type of problems since I got into the business almost two decades ago. Gauge pegs itself to the right, above full, some possibilities are: Brown wire is off back of gauge. I can manage it on the basis of known MPG vs actual miles since fill up, but is there a quick fix, does anyone know?. Yes the cruise was set about 75. better than pushing. Bad tank to body ground. My 2000 Taurus' fuel gauge is off/broken. what i noticed is if i have more than half tank of gas it seems to work but if my gas is blow half tank the gauge get stuck on half tank. Then go turn the key to "run" and see if the gauge heads for "full. the gauge is stuck on full and it's annoying not to know how much gas i have, does anyone have a solution. Now let me try to explain the Signal in more detail. I can usually drive about 350 miles before refilling.