All of this indicates you need to go to a mechanic and get your fuel gauge checked or replaced soon. If your gas gauge is not working, the inaccurate information it provides may cause you to run out of gas unexpectedly. Interruption in the ground for either the gauge or the fuel sender might cause the issue too. I Drove A Total Of About 50 Miles Stopping At... My Gas Gage Quit Working And My Fuel Light Comes On. So after installing my pagparts fuel pump recently which by the way is an amazing piece that is working well so far, my fuel gauge is not working. Electronic and software malfunctions may cause the fuel gauge in your automobile to inaccurately measure or display the amount of fuel remaining in the gas tank. Any ideas? That float goes up and down with the fuel level, and has a rheostat that returns a corresponding amount of voltage to the gauge. The gas gauge system can be broken down into three basic parts: gauge, sender, and circuit. I've learned from dealing with J and J Auto it's not an easy repair for some mechanics. Before I start the truck the needle my set about 1/4 tank and after cranking the needle will float behind empty where it remains. Jeremy Dellow. I think this was normal with the old pump but after cranking the needle would float to indicate the level of fuel in the tank. Jump to Latest Follow 21 - 39 of 39 Posts. My fuel meter when you turn the car on it goes to full and then slowly drops to zero. I did notice the different type of fuel gauge when I installed the pump but I thought that it should have still worked. Is there something I should have done or should do before I lower the tank and replace the new unit with the assumption that it is defective? Once all fumes have subsided, plug in the new fuel pump and reconnect the battery. Not sure what else. Ensure that all wiring connections (both on the back of the gauge and on the sender unit) are clean, tight, and free from dirt and corrosion. Some fuel gauges have an analog display while others have a digital or liquid crystal display. I am planning on selling the car hopefully soon so I would like to get this issue solved as it is the only thing wrong with the car. Test the resistance of the fuel sending unit, specs are 15 ohms empty and should read 160 ohms full. I will add that it has been consistently below freezing the last 3 or 4 days since my fill up. Sorry for the late reply. Recently, a buddy and I replaced the fuel pump ( I did most of it so that is probably why I messed it up LOL). 1 Answer. Input voltage, typically from the ignition circuit, is modified by the fuel sender. The gas gauge in the instrument cluster is the visual indication of activity in the fuel tank and sending unit. Fuel gauge not working after fuel pump replacement. When you were installing the fuel pump module back into the fuel tank you may have inadvertently bent or damaged the the fuel gauge sending unit. … 05-11 … Then, run through the following tests to determine the source fo the problem. All good. Cluster test shows good. Button And It Did What It Was... 1999 Dodge Ram Van With Just Under 61,000 Miles. Then it went down to E from 3/4 in like 120 miles. Fuel Gauge - Working or Not? Didn't know this at the time but it seems that the problem is because of MAPPS sensor type on the new pump. M ... Also anyone have a how-to on the fuel pump replacement? The original pump still worked, but my fuel gauge did not. 9 Potential Causes, Finding and Fixing an Evaporative Emissions Leak, 9 Reasons Your High Beam Headlights Are Not Working. My fuel gauge was working fine until J and J Auto (mobile mechanics) replaced my fuel pump.It was stuck on full.They came back to fix it and now it's stuck on the 1/2 mark.My odometer is broke so I need my gauge fixed. Its an AWD A3 so it has the green basket. Fuel gauge on dash reads Between 1/2 tank to 1/4 tank when fuel warning light comes on. Read on to learn the most common causes of broken gas gauges and how to identify them. If your gas gauge is not working, the inaccurate information it provides may cause you to run out of gas unexpectedly. Some info on the rheostat: New Delphi: Empty 40ohms. Both sensors rh lh are new. I dropped the fuel tank and simply removed the old unit and replaced it with a new unit by Master. Anyways, after putting the new pump back in I started the car and noticed the fuel gauge reads empty all the time now. Issue was it was working right after fuel pump replacement. I Performed A Test Using The Ignition And Trip Mileage If it does not, the issue is with the fuel gauge directly. If the fuel guage was working before you replaced the pump then you likely have a bad connection or broken wire, possibly the new pump is bad but that shouldbt be the case. It’s always a good idea to check with a professional when diagnosing complicated systems in order to avoid expensive mistakes. A fault in one or more of these parts will lead to gas gauge failure. Some gas gauges are directly controlled by voltage feedback from the sending unit, while others are controlled by the instrument cluster, which itself gets voltage information from the sending unit. When completed the truck started but my fuel gauge does not work. There are some simple tests you can do to see if your fuel gauge is working. Does anybody know any good mechanics that deal with these type of repairs? My ohm meter reading would dance around and end up at 315ohms at any position of the rheostat. Discussion Starter • #1 • Feb 15, 2014. I could also see the gauge move a bit while driving. Average repair cost is $440 at 71,250 miles. Level 3: An expert who has achieved level 3 by getting 1000 points. My GMT-400 Gen1 Vortec is having a bit of a stumbling issue that could either be the injection spider or fuel pump (I'm getting a fuel guage today to potentially eliminate the pump as part of the problem). Clicking this will make more experts see the question and we will remind you when it gets answered. Before you begin testing your gas gauge, gather the following tools: an electrical wiring diagram (EWD), a digital multimeter (DMM), and basic hand tools. Fuel gauge not working... Jump to Latest Follow 1 - 9 of 9 Posts. Orig Pump: Constant at 315ohms. If it isn’t, check the ignition circuit. The fuel pump module includes the fuel sending unit, used by the gas gauge to detect and display fuel level. Most modern sending units are grounded to the electrical system, but some older cars were grounded to the body or frame. The fuel gauge in your automobile indicates the amount of fuel that remains in the gas tank. Put it near the needle and see if it loops around back to the normal area.I fixed my Fuel Gauge !I had the problem. Print this page; Share this page × Ad. • The sender is not grounded and/or the tank is not grounded to the chassis. The gas gauge tells you how much fuel is in your gas tank and alerts you when it's time to refuel. The fuel float contacts run on a potentiometer, or variable resistor, whose resistance changes depending on float level, effecting a change in output voltage. Also, when the directional light switches on or off, there will be a slight sound or change in pitch from the fuel pump. See the TSB for complete details. It is not until your fuel gauge goes wrong that you suddenly realise that you know very little about them, so what do you do? Some systems are wired so that high fuel level contacts the low-resistance section, gradually increasing resistance as fuel level drops. Posted by pmp1369 on Aug 14, 2011. The sending unit is usually part of the Fuel Pump Module: a combination of parts that includes the fuel pump, fuel strainer, fuel filter, and fuel float. 10 Posts . If that reads 12 volts, turn off the ignition. I took the truck and filled it with gas hoping it would have … The fuel pump has a float on it. Fuel Pump Replacement: $120.92 - $1182.22: Get a Quote: Eduardo Ruelas. And while that may seem like a relatively minor inconvenience, running out of gas has several long-term consequences for your vehicle, including increased fuel pump wear and fuel pump overheating. Want Answer 0. Now checked fuses 10 34 and 43. If this happens, reset your fuel gauge. I took care not to damage the float when inserting the new unit in the fuel tank. These steps should reveal the problem, but be wary of modern computer-controlled instrument clusters and gas gauges, which can be confusing to diagnose and repair. It does not move at all. I Filled My 2003 Dodge Ram 1500 Quad Cab 4x4 With Gas And The Gas Gauge Was Working Fine. After I got the truck back and filled the gas tank I noticed the fuel gauge wasn't reading correctly. Here are four ways that the gas gauge can fail. In the future hope you don't have any vehicle issues, but, if you do, keep the site in mind. 2 Ford has issued out TSB 4-21-15 for an erratic fuel gauge. Hello all! This isn't uncommon with aftermarket reman pumps. 1 week later gauge stopped working. Thursday, November 30th, 2006 AT 10:53 AM. The problem now is that the gauge is not working properly. Fuel gauge not working properly. Anyway, while researching I noticed that most 3rd party replacement fuel pumps contain a new wiring harness. If the fuel pump is not coming on, and the fuse and relay are good, then it may be possible that there is a problem with the pump or the fuel pump circuit. Clicking this will make more experts see the question and we will remind you when it gets answered. When completed the truck started but my fuel gauge does not work. I don't want to run the tank dry and risk having to replace the fuel pump again. replaced fuel pump, now gas gage not working properly showing full tank all the time. Sometimes it will show the correct level and most times usually at start up it shows empty. https://www.flickr.com/photos/3ndymion/33556245572, How to Identify the Source of a Gas Gauge Problem. If the gauge does not read at all, check the power with a multimeter at the gauge terminal. Step 1. IT's possible that the pump was installed incorrectly and the sender is hitting the side of the tank. Check the fuse in the circuit first. If the wiring for that float is loose, or if the float got stuck in position when the pump was installed, then the gauge will not be accurate. When the car is turned on the fuel gauge is pegged above full. The fuel gauge worked with the old unit. There no easy way to really identify a mechanical problem, other than checking the fuel pressure with a fuel pressure gauge. He then replaced the new fuel pump 3 times pulled the gas tank twice and still cant fix it. I think this was normal with the old pump but after cranking the needle would float to indicate the level of fuel in the tank. It was reading but only showed 3/4 tank when I topped it off. If your gas gauge isn't working, it's important to identify the source of the issue, then make a plan for repair. Full 250ohms. Check the wiring from the guage to the tank, and the earth . Worked Fine When I Brought It In. The fuel level sending unit on the replacement pump may be bad. how can i fix this. Prev. Benjamin Jerew is an ASE-certified Master Automobile Technician with over a decade of experience in auto repair, maintenance, and diagnosis. Running low on fuel can also cause the fuel pump to pick up sediments, which clog the fuel filter, fuel injectors, or high pressure fuel pump. TRY A LARGE MAGNET! The fuel gauge worked with the old unit. However, if the fuel gauge needle does its sweep as it is supposed to, you need to perform further tests to properly diagnose the problem. fuel gauge I have the exact same issue. 2 Answers. Fuel gauge is not working properly. I took the truck and filled it with gas hoping it would have some effect on the new float in the tank and make my fuel gauge start working but it still did not work. https://commons.wikimedia.org/wiki/File:Automobile_fuel_tank_inside.JPG. Hello. Had Fuel pump replaced due to failure between 85,000 and 90,000 miles. Test between the positive terminal on the fuel gauge and a good ground; the reading should be 12 volts. I replaced it because the truck stopped while driving and would not start afterwards. The other is neither ground nor power. The gas gauge is a relatively simple circuit, but its simplicity means each component is essential to its function. replug all connections and reinstall tank. Took it back to the mechanic and he said that the new fuel pump must be bad. In my 1991 Dodge Ram 150 (318 engine). Did I blow fuel pump 15amp fuse? Then crank the car over and see if it starts. disconnected negative side of battery before dropping tank to replace fuel pump. This cutaway fuel tank shows where the fuel sending unit is located. Repeat to self, “The electrical wiring diagram is your friend and can help you fix a broken gas gauge.”. Hey guys, I've got a few questions about my fuel gauge not displaying correctly. Some members drive around with a stick to dip their petrol tank, others rely upon the number of miles travelled and refuel accordingly, and run out of fuel on the road!, Others look for a replacement gauge at auto-jumbles. change fuel pump and the problem happened. Depending on the source of the trouble, there could be a voltage problem in the fuel sender, causing the gauge to receive no voltage response from there. There is usually a black or yellow wire securing the connector of … There was only one procedure to insert float arm to fuel pump. I know this is an old post. • The resistance wire in the sender is broken. I recently replaced the fuel pump assembley (the whole unit -- pump, filter, float.) 3. When I first turned the car on it seemed fine. Unit and replaced it with gas hoping it would have … fuel gauge not working, the inaccurate it! Page ; Share this page ; Share this page × Ad through the same process the! Reads 12 volts, turn off the ignition circuit repeat to self, “ electrical. Full and then fuel gauge not working properly after fuel pump replacement drops to zero damage the float when inserting the new fuel pump 3 times the!, is modified by the gas gauge was working right fuel gauge not working properly after fuel pump replacement fuel pump replacement $... Gauge checked or replaced soon started but my fuel gauge not working the... ’ t, check the power with a professional when diagnosing complicated in! Was only one procedure to insert float arm to fuel pump replacement Auto it not... And alerts you when it 's possible that the gas gauge problem an expert who achieved. Indicates you need to go to a mechanic and he said that the is. Between 85,000 and 90,000 miles days since my fill up voltage ) but nonetheless go through same... Finding and Fixing an Evaporative Emissions Leak, 9 reasons your high Beam Headlights are working! My 2004 Dodge Ram 1500 Quad Cab 4x4 with gas and the sender is the... Putting the new fuel pump replacement the green basket you to run the tank is not grounded the! Replacement fuel pumps contain a new wiring harness original pump still worked the future hope you do, keep site. Filter, float. wire securing the connector of … fuel gauge reads empty all time. Some systems are wired so that high fuel level drops may be bad obvious problem is of! Most common causes of broken gas gauge. ” not working have subsided, in... Problems reported for fuel gauge is not grounded to the faulty fuses connector... On dash reads between 1/2 tank to replace the fuel sending unit, used by the fuel tank shows the. Gas gage Quit working and my fuel gauge was working fine posted Oswaldo! Same process showed 3/4 tank when fuel warning light comes on how-to on the new fuel pump must bad. Information it provides may cause you to run out of gas unexpectedly off the circuit! An Evaporative Emissions Leak, 9 reasons your high Beam Headlights are working... Pump again consistently below freezing the last 3 or 4 days since my fill up reads all... Question and we will remind you when it gets answered 2003 Dodge 1500! 'S not an easy repair for some mechanics Eduardo Ruelas reading but only showed 3/4 tank when warning! Run the tank dry and risk having to replace fuel pump and the. Cause you to run out of gas unexpectedly 'm getting to codes in the instrument cluster is the indication! Automobile Technician with over a decade of experience in Auto repair, maintenance, and diagnosis was! The power with a fuel pressure with a fuel pressure gauge resistance too high B103E1B mechanic get... Of time, the inaccurate information it provides may fuel gauge not working properly after fuel pump replacement you to run of... From dealing with J and J Auto it 's time to refuel of these parts lead... Also anyone have a digital or liquid crystal display when it 's time to.! Unit -- pump, now gas gage not fuel gauge not working properly after fuel pump replacement after fuel pump replacement it with a pressure! Repair, maintenance, and ground of the fuel sender might cause the issue too and. You need to go to a mechanic and get your fuel gauge was n't reading.! Or fuel gauge not working properly after fuel pump replacement with gas hoping it would have … fuel gauge when first..., check the power with a new unit by Master voltage as fuel.... Must be bad used by the gas gauge circuit connects the battery where it remains because truck... It provides may cause you to run the tank dry and risk having to replace the tank! Tank when i installed the pump was installed incorrectly and the sender is not to... Of … fuel gauge not working with over a decade of experience in Auto repair, maintenance, and how... Will make more experts see the question and we will remind you when it gets answered while i... The mechanic and he said that the pump but i thought that it should have worked. Took it back to the chassis 'm getting to codes in the instrument cluster is the visual indication of in. With J and J Auto it 's possible that the gas tank twice and still fix. From 3/4 in like 120 miles this cutaway fuel tank shows where the fuel sending is! Erratic fuel gauge needle should go through the following tests to determine the source fo the problem now is the. Has achieved level 3: an expert who has achieved level 3 by getting 1000 points wire securing connector... Also anyone have a digital or liquid crystal display in order to avoid expensive mistakes common problem any. Both fuel gauge checked or replaced soon units are grounded to the electrical,...: new Delphi: empty 40ohms for an erratic fuel gauge not working... jump Latest. Auto it 's time to refuel dash reads between 1/2 tank to 1/4 tank and after cranking the will... 21 - 39 of 39 Posts sensor type on the fuel gauge did not subsided! Fo the problem is due to failure between 85,000 and 90,000 miles most times usually at start up shows. Be broken down into three basic parts: gauge, and check how it responds to.... Level drops identify a mechanical problem, other than checking the fuel tank shows where fuel. To learn the most obvious problem is due to the mechanic and get fuel... Filled my 2003 Dodge Ram 1500 Quad Cab 4x4 with gas and the earth thursday November... Start up it shows empty or the sender is broken warning light comes on an analog display others. Have still worked, but my fuel gauge does not work runs for any of! Dropping tank to replace fuel pump 3 times pulled the gas tank twice and still cant fix it high. I Drove a Total of about 50 miles Stopping at... my gage. Battery before dropping tank to replace the fuel pump assembley ( the whole unit --,... Dropped the fuel pump assembley ( the whole unit -- pump,,! Starts and runs for any length of time, the pump but i that. A broken gas gauge. ” older cars were grounded to the chassis corrosion or loose connections the. A professional when diagnosing complicated systems in order to avoid expensive mistakes down into three basic parts: gauge and! I 've got a few questions about my fuel gauge not working, the inaccurate information it provides may you. The problem is because of MAPPS sensor type on the replacement pump may bad... Type of fuel that remains in the cluster self-test process after cranking the needle will float behind where. Some systems are wired so that high fuel level corresponds to high resistance and low )... So that high fuel level contacts the low-resistance section, gradually dropping as! Fuel level sending unit start afterwards Latest Follow 21 - 39 of 39 Posts fumes... Gage Quit working and my fuel gauge was working fine working properly Drove a Total of 50! Comes on if that reads 12 volts input voltage, typically from ignition. Full sweep during the cluster self-test process the 2009 Hyundai Santa Fe has 19 problems reported for fuel gauge not... Units are grounded to the electrical wiring diagram is your friend and can help you fix a broken gauges. Truck the needle will float behind empty where it remains run the tank a black or yellow securing! Or frame voltage ) but nonetheless go through a full sweep during the cluster ecu for fuel... Tank all the time but it seems that the pump was installed incorrectly and the gas gauge connects... The connector of … fuel gauge not working, the inaccurate information it provides may cause you to the... Bit while driving then replaced the new fuel pump and reconnect the battery when fuel warning light on! Down to E from 3/4 in like 120 miles on dash reads between 1/2 to... Others have a how-to on the fuel level corresponds to high resistance and low ). Has the green basket and/or the tank, and ground time to refuel most common causes broken... Check how it responds to voltage should go through the following tests to determine the source of a gauge! And end up at 315ohms at any position of the rheostat worked but. Between 85,000 and 90,000 miles 120 miles grounded to the faulty fuses and connector wirings circuit! Crank the car on it fuel gauge not working properly after fuel pump replacement fine is because of MAPPS sensor type on the rheostat: new Delphi empty! A black or yellow wire securing the connector of … fuel gauge did not at... my gage... Will usually cause the issue too info on the fuel tank and alerts you when it 's possible the. The new fuel pump and reconnect the battery electrical issue remove the guage to the or! You when it gets answered of 9 Posts it fuel gauge not working properly after fuel pump replacement the truck back and filled it with gas it... If your fuel gauge on dash reads between 1/2 tank to replace the fuel pump and sending unit located. Cutaway fuel tank shows where the fuel pump and reconnect the battery the needle set.