F150 Fuel Gauge Stuck Past Full

At Fuel Off-Road, we take our machining seriously. After I had put anew fuel pump in the fuel gas meter has been stuck past full for a few days 1990 Suburban V1500 gas gauge not working. I added a little over 7 gallons, which is about right for where the gauge was at. A faulty resistor can also cause the gauge to read empty. Your Ford F150 Fuel Level Sending Unit is a device that is within the gas tank. This sure sign of a problem can have numerous causes. Wiki User 07/16/2009. or could it just be the gauge any help would be appreciated. so i dropped the tank tested the fuel sending unit it was bad i got a new one. I've noticed in the past that the gauge would stay on full for a good many miles before starting its travel down to the empty mark, and thought that possibly I hadn't hit that milage mark yet. Note that some self-test steps may stop the gas gauge at 1/4, 1/2, and 3/4, as well. In the past the fuel gauge had always been pretty accurate. How it Works. Any knowledge would be much appreciated. UPDATE: Patiently waiting for the fuel gauge needle to move is not working. note how the pointer needle for the speedometer is stuck at 105 mph with the vehicle parked and the key out of the ignition. January 5, 2018 - With gas prices rising, filling your tank might make you wish for better fuel economy or a smaller gas tank, especially if you drive the 2018 Ford F- 150's 5. I wasn't able to drive it for a week or so, and finally got around to filling it up (gauge went to past full). If I remember right when empty the sender will show resistance and as the resistance decreases the gauge swings to full. Goes to empty in 150 miles - Answered by a verified Ford Mechanic We use cookies to give you the best possible experience on our website. The drivers side then goes to the passenger side in a yellow/black wire. Empty is 0 ohms and full is 99 ohms. Fuel gauge not reading correctly Then as I drove down the road I noticed the fuel gauge was reading just under 7/8 full? 2009/2014 F150 2WD's have a 26 gallon. If you short the send terminal to ground and turn the key on, the gauge should read full. This mechanism is one reason for the inaccuracy of fuel gauges. Get the latest in-depth reviews, ratings, pricing and more for the 2006 Ford F-150 from Consumer Reports. If the gauge instantly moves toward E, the gauge & its power/ground are good, and the fault is PAST where you grounded the Y/Wh wire. It's been sitting for several months and I added some Sea Foam to the tank at the gas station. And then the fuel gauge showed full. Hope you and Debbie can make it! See you in Daytona, also. The gauge should read full nuts full. "On equipment that has not been used a whole lot, you could get a loose wire connection," says Kolbeck. I'm pretty sure I've read every forum/post/site dedicated to fuel gauge issues, but I'm stuck. 97 FORD F150 WONT START AND THE FUEL GAUGE GOES ALL THE WAY OVER TO FULL AND STAYS 2 Answers. Removing the sending unit wire from the chassis ground the fuel gauge should go directly to “full”. We have been keeping track of the miles but honestly I would rather just get it repaired. And it took LOTS of fuel to fill the tank again. The lack of a good ground is often the reason the gauge does not work properly. note how the pointer needle for the speedometer is stuck at 105 mph with the vehicle parked and the key out of the ignition. I have driven 90 miles city so I know it's not full. i'm going to show you how to fix your fuel gauge the easy way before you buy new part when it can just be a bad ground wire to the fuel level that can make it jump work sometime or not at all most. Fuel gauge problems [ 5 Answers ]. Place a link between terminal 'S' and 'G' or 'GND' terminal. It was reading but only showed 3/4 tank when I topped it off. Fuel gauge only reads full on 1993 ford f-150 how do you fix it? 25 26 27. The fuel gauge has never accurately indicated the correct level. for the sending unit: With ohmmeter positive lead on the signal wire lead and the negative lead on ground, check the resistance values of the fuel sending unit at various positions of the float arm. 0 automatic and it runs pretty decent. The 2010 Ford F-150 has 6 problems reported for fuel gauge inaccurate. This system is the fuel tank sending unit. Fuel gauge stuck way past full, and only pulling fuel from the front tank, eventhough rear tank was selected? 1997 Ford F350, 7. start the van and the fuel pegs out to full. I removed the dash to check for tightness of all wires, everything appears fine. the gauge goes back to empty, when it is started the gauge goes to full. UPDATE: Patiently waiting for the fuel gauge needle to move is not working. I us 89 octane per Brocks recommendation with his accessories. With a jeep (of this vintage), the gauge reads empty with about 100ohms of resistance (it might be 98 actually, but that doesn't really matter), and full with 0ohms. and gauge read full, and "miles to E" read 376 mi. (Full is at about 2 o'clock position) So far, after a few days of driving I haven't seen it move at all. I would suspect the anti-slosh module that is mounted on the back of the instrument panel is the cause of the problem. is it easier or harder than those gas tanks. With a full tank, it should read between 9 and 10 Ohms. The fuel gauge diagnostics on all cars 1977-1982. It is stuck above full. By the way, Alex and I are making good progress on our Southeastern Rally. any ideas why a 2000 Buick Century's fuel gauge in the dashboard would stay at "FULL" all the time. Re: Fuel gauge stuck on Full. Re: fuel gauge stuck to the right 11-07-06 02:31 PM - Post# 1030675 In response to bentleywarren You lost either power or ground completely. The big deal with Ford's new F-150 is the aluminum body. Hey all My AU1 XR8 hasent had a full tank of fuel for about 8 months. Removing the sending unit wire from the chassis ground the fuel gauge should go directly to "full". Temp gauge not working not over heating 00 f150 4x4 4. The fuel gauge should immediately go to empty. He says it could be an issue with the fuel level sensor. As you can see from the pics the gauge reads full when the truck is off and way past full when the truck is running. My fuel gauge was working fine until J and J Auto (mobile mechanics) replaced my fuel pump. Its a 1990 Ford F150 v8 5. A stuck fuel gauge on your vehicle can not only be annoying, but also require you to keep track of how many miles you've driven since your last fill-up to prevent you from running out of gas. Then it goes another inch past full to about the 3:00 position. This is weird, I stumbled on this thread just now, my 2004 w/288,000 miles has the fuel gauge stuck, on full, then it will be stuck on 1/2, but it isn't reflecting the actual gas. when my 94 did it it was the float on the fuel pump. A few cosmetic things that are pretty normal for a 16 year old car. 1978 - 1996 Big Bronco - Fuel Gauge reads past full - Hello guys. Gauge testing: At the back of the gauge, remove the wire going to terminal 'S'. ** *Class is Full-Size Pickups under 8,500 lbs. Subject: [EBML] Fuel Gauge Ground wire I have a fuel gauge that is has fluctuating readings from past full to over empty. the fuel gauge was stuck on full it was actually past full around 3 o'clock or so. Fuel Gauge stuck on empty even though there's fuel ?? Hey guys! So yesterday I am driving, have about half a tank of fuel and next thing the fuel gauge just drops to empty and the red "low on fuel" light goes on. This is the one if grounded should make the gauge read full (when key on - takes a minute). please you cluster must be a lariet not a plain f150 must look just like picture below. 2007 Ford F-150 FX4 FX4 4dr SuperCab 4-Door Truck click on a thumbnail to view full-size photos quickly and easily understand a vehicle's past, compare. Remove a few screws below it and the sending unit can be removed. Any suggestions. The 2015 F-150 isn’t a leap in any area. They came back to fix it and now it's stuck on the 1/2 mark. UPDATE: Patiently waiting for the fuel gauge needle to move is not working. Just replace it. The gas gauge for the front tank on my 1992 F150 is stuck past full You probably have a ground wire not making contact to ground on the front tank sending unit. It is an intermittent short, because it goes between the way past E reading and the actual fuel level. I think Valvoline might make it. Going past full indicates the brown wire to the sender is not connected or the sender is bad. When the vehicle is filled prior to depleting the gas tank to these levels, an offset is calculated and stored in the instrument cluster memory. when my 94 did it it was the float on the fuel pump. The gauge reads off scale full until there is about 2 gallons of fuel left. Wait one minute and read the fuel gauge. When your tank is full, the float is at its maximum raised position -- its upward movement is limited either by the rod it's connected to or by the top of the tank. For some reason, the fuel gauge always reads way beyonf "FULL" And the gauge doesn't move, no matter how much gas is in the tank. This is why I wondered if the float had got stuck. i'm going to show you how to fix your fuel gauge the easy way before you buy new part when it can just be a bad ground wire to the fuel level that can make it jump work sometime or not at all most. To test the gauge, pull the center terminal off the fuel tank sending unit and attach a jumper to it and ground this jumper. It should go to empty. You may either check our catalog or use the Ask A Question feature to find out what the range of operation of the gauge is. I drove and drove for many kilometers thinking how light my car is on fuel as the gauge is not moving. Exterior; Chrome front and rear bumpers; Conventional lens halogen bulb headlights; Courtesy lights; Gloss paint , black paint , metallic paint; Rear platform step; Heating, Venti. GAUGE DOES NOT INDICATE FULL In case of a customer complaint of the above condition where the fuel tank is believed to be full, but the gauge indicates less than full with the vehicle on level ground, check that the resistance at the fuel level sender unit is approximately 80 ohms. Discussion in '1992 - 1996 Ford F150, F250 and F350 Truck Forum' started by Fuel guzzling beast, Oct 11, 2019. Gas Tank Depot is your complete fuel system parts source. The test for this is straightforward. (unknowing how long they will have it of course). The mech said he will check it and when i got the car back, the fuel gauge said 1/2 (which was about right). I know this is typically a "Ground" Issue. Fuel gauge problems [ 5 Answers ]. It's power source comes from a voltage regulator that is 5 volts. I drove to the nearest station but was able to put only 10 gallons in a 30 gallon tank. It's been a couple of years since it worked right, but I seem to recall full used to be more spot on than that. 2009 - 2014 Ford F150 - Bad Fuel Gauge Reading Problems - Anyone have any experience or know if it is common problem? I'll fill up and drive perfectly fine, once the manual gauge goes to half tank, or a bit below it'll start giving me false readings. It is pegged out against the Full side of the gauge. Result- out of fuel early morning with family on highway. Then when I looked again it was pegged all the way to the left way past "Empty". If it were the sending unit then one of them would be accurate but its not. The fuel gauge should immediately go to empty. gas gauge jumps. 57 chevy fuel gauge problem Stock Chevy Discussion 55-56-57. Empty is 0 ohms and full is 99 ohms. Once you get to the fuel pump access plate area underneath the back seat, disconnect the plug, and the fuel gauge should drop to Empty. 5L EcoBoost ® with best-in-class* 450 horsepower and 510 lb. when my 94 did it it was the float on the fuel pump. It doesn't read the amount of fuel evenly in relation to miles traveled versus gas used. This gauge will give you accurate readings of your air/fuel mixture, but if you are really looking to really tune your vehicle we recommend. 4 Fabia Comfort 02 from Nottingham to London and back. I now drien it about a half a tank full of miles but the Gauge still reads FULL. Gauge Reads Full At All Times. The sending unit was worn and the brush contacts were not making full contact. FUEL GUAGE NOT WORKING discussion in the John Deere forum at Yesterday's Tractors. It's an autometer fuel gauge and american autowire. The fuel gage circuit consists of the sending unit in the fuel tank, the gauge in the dash, and the wiring and dash wiring (or circuit board) between them. How do i fix this? anyway to check it and see whats wrong, it was working perfectly fine, till i topped it off with gas (just got the car 2 weeks ago) and since then its been stuck on full. It is pegged out against the Full side of the gauge. A faulty fuel gauge resistor can send a bad signal to the instrument cluster which can cause the gauge to permanently read full. It's not a real good contact or the gauge would read as full as the gauge can read, but it's enough to give you a darn near full reading, meaning it's a hard short. A faulty resistor can also cause the gauge to read empty. I changed the thermostat anyway, but it didn't make any difference. Any ideas?. To check the gauge, slowley move the float from full to empty. Exterior Features; Bodyside/Cab Step or Running Board: Option; Bumper Step Up: Standard; Front Air Dam: Standard; Metallic Paint: Standard; Power Sliding Side Van Door: N/A; Power. 2 regular cab 2wd automatic daily Fuel gauge stuck at full. When the fuel level changes, the current also changes — higher currents mean the tank is full and lower currents mean the tank is moving towards empty. Goes to empty in 150 miles - Answered by a verified Ford Mechanic We use cookies to give you the best possible experience on our website. Now after the last time the gauge is stuck past full and digital readout says 18 gallons. So I look at the gas gauge and it says “full”. Now I can get any movement out of it at all, Switched to the other tank and still wouldn't budge. The sending unit was worn and the brush contacts were not making full contact. Licensed Ford, Jeep, GM & Hoonigan gauges. As your gas tank is drained of fuel, the float drops and an electrical current is sent to the gauge to tell the driver what’s going on with the supply. Tem p date if the balance is not paid in full within. Is this a bad sending unit? Bad gauge? When I disconnect the harness wire that goes from the sender to the gauge and ground it, it still reads full. The truck shop manual says "If the indicator hand goes beyond the scale on the opposite side of the scale (I interpret this to mean reads past full) or reads erratically, a wire in the fuel gauge circuit is grounded or the tank unit is defective" The gauge can be checked by : Placing the ignition switch in the off position and connecting the. The fuel gauge jumped up a lot with little fuel being added. 4 l leaks fuel out of the top of the fuel tank when filling, the fuel stations pump does not shut off when the tank is full causing gasoline to be spilled on the ground. symptom of an issue with the fuel gauge sender is a fuel gauge that is stuck on full. 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. If your fuel gauge is stuck full or empty this video may help to see if the problem is with the gauge itself, the wiring, or the sending unit. The gauge reads off scale full until there is about 2 gallons of fuel left. This video will show how to do this without dropping. Wiring from the fuel tank may also have become worn with time, a grounding wire may have become loose or a connection within the vehicle's electrical system may have been damaged. 2013 Ford F-150 LARIAT 4-Door Truck Full-Size Non-Matching Spare Tire Size a rating that allows you to quickly and easily understand a vehicle's past, compare. Then you would want to get it checked out before any damage occurs. Set Instrument Gauge System Tester to 15 ohms. Fuel gauge only reads full on 1993 ford f-150 how do you fix it? 25 26 27. when my 94 did it it was the float on the fuel pump. Ford F-150 2006 with 5. (Full is at about 2 o'clock position) So far, after a few days of driving I haven't seen it move at all. Drives the vehicle and refills the tank before the Fuel Gauge drops below Full) 2. The GM Fuel Gauge Mystery 1965 & Newer April 2, 2012 May 22, 2019 Eckler's 4415 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. 8 gallons to fill her up. I recently drove over 250 miles and the fuel gauge never moved a bit. Most gas tank units consist of two parts, the gas gauge mounted in the dash and a tank sender mounted in the tank. Frequently topping off the fuel tank (i. 2009 - 2014 Ford F150 - Bad Fuel Gauge Reading Problems - Anyone have any experience or know if it is common problem? I'll fill up and drive perfectly fine, once the manual gauge goes to half tank, or a bit below it'll start giving me false readings. So the fuel reading doesn't change and I know I'm at least past half tank. Wiring has been checked and verified that is correct. If not, make sure that the guage posts are not grounded to the backing plate and try again. This mechanism is one reason for the inaccuracy of fuel gauges. I removed the dash to check for tightness of all wires, everything appears fine. When i originally bought the truck the gas gauge would only accurately work above a half tank. I don't like blindy changing parts, and dropping the fuel tank sucks. Is there anything to do besides going to the dealer and shelling out a bunch of cash?. Hey guys just wondering if anyone has any advice on a problem with my truck. I drove roughly 6 miles. I removed the sending unit and tested the float in a bucket of diesel fuel and it moves freely up and down. To do so, connect the negative jumper cable to the vehicle's frame and the positive cable to the fuel gauge's grounding terminal. i have an 89' f150 lariat, 4x4, strait 6, 4 speed. Expecting fuel price to drop I only put in 10 gallons for my round trip back home. My fix might only be a possibility if the gauge reads half full when the tank is full (and the sending unit is good). Hello, just bought my first truck and it has some minor problems. Use this fuel pump and vacuum tester to test the pressure on mechanical and electrical fuel pumps. if i take the fuel sending unit out of the tank and plug it up and turn the key to the truck it works with the gauge when i move the float up and down but when i put it in the tank it stays way past full. 97 FORD F150 WONT START AND THE FUEL GAUGE GOES ALL THE WAY OVER TO FULL AND STAYS 2 Answers. Can't remember which way it is. the gauge goes back to empty, when it is started the gauge goes to full. Result- out of fuel early morning with family on highway. I have an 88 bronco full size with the 33 gal fuel tank. The gauge reads off scale full until there is about 2 gallons of fuel left. It has 225 miles on it and it is FULL. Set Instrument Gauge System Tester to 15 ohms. I hooked up my new AutoMeter fuel gauge yesterday and it read FUll and I know the tank is not full. Resistance should range between 22. Its stuck at past full. if i take the fuel sending unit out of the tank and plug it up and turn the key to the truck it works with the gauge when i move the float up and down but when i put it in the tank it stays way past full. This mechanism is one reason for the inaccuracy of fuel gauges. The mech said he will check it and when i got the car back, the fuel gauge said 1/2 (which was about right). new 2004-2008 ford f150 lariet :problems with gauges (speedometer,gas,oil, tach,battery,temp)where they are sticking, reading incorrectly,or just not working at all this will get you going again. 1978 - 1996 Big Bronco - Fuel Gauge reads past full - Hello guys. When the gauge reads empty it only takes approx. fuel tank gauge (front tank setting) to drop off the full mark (actually the gauge needle goes slightly beyond full) but it had not dropped. I drove to the nearest station but was able to put only 10 gallons in a 30 gallon tank. I now drien it about a half a tank full of miles but the Gauge still reads FULL. Removing the sending unit wire from the chassis ground the fuel gauge should go directly to “full”. So the gauge is out of calibration or just broke. We feature new Automotive gas tanks, fuel tanks, sending units, fuel hoses, fuel pumps and modules and much more. If you DO have 12 volts to the fuel gauge, the next step is to remove the fuel sending unit wire, and, with the ignition key “on”, ground the sender wire to a good chassis ground. However, if you get a reading of between 96 to 98 Ohms, you will know the sending unit has a problem and will need to be replaced; the 96 to 98 Ohms reading is that of an empty fuel tank. It the needle sticks then you have a gauge problem. Weather stripping tends to leak near rear windows. Just messing around before work on the fuel gauge. I installed a new fuel sender 2 years ago, since then, the gauge would only go as far as 1/4 tank no matter how full it was, after a year, I pulled the sender ( forget I already replaced it) & Installed Another NEW sender (checked it for 0-90 before installing it) STILL, the gauge will go no higher than 1/4 !. It only reads full at first I thought it was a stuck float and thought it had to fall down one day. The fuel gauge is a fairly simple electronic. It is normal for mine to not move off the full mark till 115. Fuel gauge sender. Fuel Level Sender. Note that some self-test steps may stop the gas gauge at 1/4, 1/2, and 3/4, as well. The fuel gage circuit consists of the sending unit in the fuel tank, the gauge in the dash, and the wiring and dash wiring (or circuit board) between them. I have a 97 F150 and it wont start. Drives the vehicle and refills the tank before the Fuel Gauge drops below Full) 2. Pick this stuff up and go fill up your tank FULL, fuller than you have ever filled it before (but dont overfill). If the fuel gauge does not respond properly when the sending unit is unplugged and with the circuits jumpered together, remove the anti-slosh module from the rear of the cluster and check for the gauge to peg past full with the cluster connector plugged back in and the. Temp gauge not working not over heating 00 f150 4x4 4. 2) The tank switches but the fuel gauge reads way past full as an open circuit and I am unsure of my fuel level. I just changed out a bad sending unit in the fuel tank on my truck ('01 2500HD) and that fixed my problems with erratic fuel gauge readings. My fuel gage is not working properly. This is the one if grounded should make the gauge read full (when key on - takes a minute). Read here for the latest Ford news, including information on open recalls, new models, price changes, consumer reviews and complaints, and more. IIRC an open circuit will cause the fuel gauge to default to full. It’s possible that the fuel gauge itself has become faulty. Now the fuel gauge still reads full even though I've had to refill a couple times since then. Fuel line goes into the fill tube from the bed tank. Great prices, quality service, financing options may be available. If wiring and tank ground is good then sender is not working. If you're just talking about the analog fuel gauge, my last two cars have been the same way. I checked the Ground off the tank to the chassis. When I Was Told That. Logout Logout; having experienced similar things in the past. I disconnected the sender and the gauge read full, then i turned the car off and turned it back on and it read 3/4, and then 1/2 after I repeated the process. When my grandma bought this car with 4000 miles the fuel gauge has never worked. 1973 Z-28 with Gauges. When I switch the tank to the rear it drops to empty. I've heard of people having this problem while using E85 and the sensor itself going out, but I've religiously used 93 OCT only since I bought it brand new in 2012. Going past full indicates the brown wire to the sender is not connected or the sender is bad. I even tried using a jumper from the sending unit to the gauge using test leads. We will assume a half-full fuel tank and that you have removed the float unit to check to see that it isn't stuck or that the wires haven't come loose. I recently found out this is a common problem with these trucks. symptom of an issue with the fuel gauge sender is a fuel gauge that is stuck on full. I've heard of people having this problem while using E85 and the sensor itself going out, but I've religiously used 93 OCT only since I bought it brand new in 2012. Once the motor was stopped, the temperature gauge only returned to the middle of the gauge and is now stuck in that position. if you didnt put it right. The fuel gauge should immediately go to empty. when my 94 did it it was the float on the fuel pump. How do i fix this? anyway to check it and see whats wrong, it was working perfectly fine, till i topped it off with gas (just got the car 2 weeks ago) and since then its been stuck on full. Hi everyone, Over the weekend I drove my 1. The gas gauge for the front tank on my 1992 F150 is stuck past full You probably have a ground wire not making contact to ground on the front tank sending unit. Today I took the boat out for several hours just cruising, not pulling yet, and was cruising at 30mph when I noticed I was just below 1/4. I filled it right up this week and now the gauge seems to be stuck on a bit over full , the D. Fuel Gauge Is Stuck Past Full. And it took LOTS of fuel to fill the tank again. Its stuck at past full. If this is the cause of a fuel gauge failure, it can be resolved by removing and replacing the faulty component. How do you test if it's the gauge, wiring or the fuel sender? I know on other cars you unplug the loom and can jump certain pins and the gauge would go full or empty. My Gas Gauge Reads Empty When It Is Full Of Fuel. My Truck That I Recently Bought Had A Broken Fuel Gauge Which Was Stuck Past Full. ? i filled up my truck, but i put to much on and the tank became over filled. Now the fuel gauge still reads full even though I've had to refill a couple times since then. However, if you get a reading of between 96 to 98 Ohms, you. The range indicator starts at a fixed value if you clear the trip log, but if the trip log has some records in it, then the range is based on that. 1998 f150 4. the black wire past where. However a full tank of gas put the fuel gauge about 1/2" past the full mark. If anyone has any good advice on where it start it would be greatly appreciated. However, if you get a reading of between 96 to 98 Ohms, you. And it took LOTS of fuel to fill the tank again. So i filled it up and the gauge said full. How do I know if I have a fuel pump problem with my car. Even 3/4 is not detrimental, as the gauge is never as exact as the the actual temperature sensor. The gauge reads off scale full until there is about 2 gallons of fuel left. When I was told that the fuel pump was going bad on it and the sending unit was bad in it I replaced it, but after I bought a new fuel pump for it, the gas gauge still is stuck past full. 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. What I can report is being full, it is showing the equivalent of just over 1/16 past full. It temporarily went back to the right reading yesterday for half the day and again, this morning is back on E. And if I unplug the wire from sending unit to gauge it still reads past full. However, if you get a reading of between 96 to 98 Ohms, you will know the sending unit has a problem and will need to be replaced; the 96 to 98 Ohms reading is that of an empty fuel tank. the gas gauge is stuck on full. It is normal for mine to not move off the full mark till 115. Quite often the fuel level sender can become gummed up and a good cleaning may correct the problem. If I remember right when empty the sender will show resistance and as the resistance decreases the gauge swings to full. Hey guys so I have a problem with my fuel gauge. any ideas why a 2000 Buick Century's fuel gauge in the dashboard would stay at "FULL" all the time. Anyone run into this issue or have any suggestions?? You reach me at [email protected] Re: Fuel Gauge says it low but Tank is Full??? Went to install new float and found the old float along with the filter screen sitting in the bottom of the fuel tank. While new car prices clearly inlude VAT used prices are driven by supply and demand. the gas gauge stays past full, way past full. My truck that I recently bought had a broken fuel gauge which was stuck past full. Another, less common, symptom of an issue with the fuel gauge sender is a fuel gauge that is stuck on full. please you cluster must be a lariet not a plain f150 must look just like picture below. 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. After I had put anew fuel pump in the fuel gas meter has been stuck past full for a few days 1990 Suburban V1500 gas gauge not working. The gauge reads off scale full until there is about 2 gallons of fuel left. If still no change, the gauge is probably a gonner. I think I still have a good reading on my temp but my oil pressure gauge is really unstable(it is actually flunctuating). Gas gauge in 2008 Ford F 150 fails to read correctly. The FPS is a silver gizmo about 3/4" in diameter and a couple of inches long. I have a 2008 civic coupe EX, and recently filled up in Oklahoma and noticed: 1) the pump at the service station was running very, very slow and 2) the pump also recorded about about a. 1998 f150 4. I called the auto parts store they said it's my fuel sending unit and I'm looking at $400. The mech said he will check it and when i got the car back, the fuel gauge said 1/2 (which was about right). Why does my fuel level gauge always read past full? First we need to determine the model number of the gauge to know what the calibrated resistance range is of the gauge in question. And it took LOTS of fuel to fill the tank again. This mechanism is one reason for the inaccuracy of fuel gauges. To test the gauge, pull the center terminal off the fuel tank sending unit and attach a jumper to it and ground this jumper. When the fuel level changes, the current also changes — higher currents mean the tank is full and lower currents mean the tank is moving towards empty.