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Before putting gas in my car I had 12 miles to empty. I went to fills it up and put $15.00 worth of gas in the tank. When I started my car it said that I still had 12 miles to empty. I drove it for like 10 mins before it said I had 71 miles to empty. What could cause this.

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  • Expert
  • 38 Answers

Just the ECM calibrating. No issues. If it never ever changed you'd have an issue. Sometimes it just takes a while.

Posted on Jul 28, 2013

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6ya6ya
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Posted on Jan 02, 2017

dgjtex
  • 405 Answers

SOURCE: fuel gauge not working on 2005 ford mustang

Sending unit is in gas tank. usually as an assembly with the electric pump. These aren't cheap either, If you know a mechanic you can trust ask him how much to install a new one, I can get them wholesale for less than two hundred dollars, but of course retail probably more like 250.00 Hope this helps you!

Posted on Dec 26, 2008

whispers76
  • 55 Answers

SOURCE: Gas Gauge not reading correctly

The most likely culprit is the sending unit in the tank. They are relatively easy to change, as long as you don't have much fuel in the tank. It's a mechanical unit that has a float that raises and lowers with the fuel level, however with age, the floats can develop leaks and no longer float, of the electronic portion of the unit can go bad and not register the proper level. They are replaced and an entire unit, so it doesn't matter which happened, you will need to change the fuel tank sending unit.

Posted on Jan 11, 2009

wyatt1582
  • 453 Answers

SOURCE: 2000 Ford Expedition Starting problem

If the fuel gauge drops off when you are driving then its a sending unit problem that means you have to drop the tank and replace the float and sending unit. This is a common problem for alot of cars because of cheap gas. If you have to drop the tank check the fuel pump canster for dirt because of cheap gas. Replace the fuel pump strainer and fuel pump filter. If the car or truck has about 100,000 miles you might want to change the fuel pump at that time also just to cover your back. If you take it to a shop they will charge you at least $900 to start. But if you do it yourself it will cost you about $200 dollars maybe alittle more.

Posted on Mar 20, 2009

wracefans24
  • 1985 Answers

SOURCE: have a 2001 gmc jimmy...drove home gas gauge read

chevy and gmc trucks have an on going problem with this,turn the key on,and get a rubber mallot or a hammer and hit the bottom of the fuel tank a couple of times,this will unstick something in the fuel pump/sending unit.

Posted on Jan 05, 2010

  • 1 Answer

SOURCE: 2005 kia sorento Fuel Gauge says empty with 1/2 tank of gas.

Fuel sensor is not working well. Just changed mine today for the same problem.

Posted on Jun 16, 2010

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Ok I changed my fuel pump and sending unit on my 97 GMC jimmy because I thought my sending unit was screwed so I put the new on in and put 35.00 worth of gas in it drove it home a mile and shut the truck...


Do you have a Chiltons/Haynes repair manual for this vehicle? If not, get one as there are a few problems that could cause gauge malfunction. The obvious one is the fuse or a relay. As to the broken/missing vacuum fitting. I would think that could have an impact since these are closed systems. But generally it would give a check engine warning with the appropriate code. Or it may be something as simple as a lose wire.

Oct 09, 2014 | Cars & Trucks

1 Answer

My 1998 Hyundai Elantra will not start after running out of gas.When I put gas in it ,it would crank but it took a long time to start. I drove it 3 miles and it shut off. I cranked it and cranked it,but it...


Don't let the car run out of gas. Fill the tank and run until the tank is half empty. Again fill the tank.
By driving until you run out of gas, you are letting sediments/dirt collected in the bottom of the tank to enter the engine. Rather they will block the fuel filter. Then gas will not reach the engine.
Clean the gas filter and your car will run fine.
The same advice again. Don't drive until the tank becomes empty.

Aug 30, 2011 | 1998 Hyundai Elantra

1 Answer

Today while I was driving, The instrument where it telles you how many miles left till empty read 27mi. all of a sudden it started counting down rapidly, within seconds it had went from 27 mi to 4mi left...


Sounds like float in fuel tank is sticking. Usually caused by using cheap gas. Fill it up and add a bottle of STP gas treatment. It might take more then one tankful w/STP to clean it completely. TIP: don't rely on the computer generated "mileage left" especially when that low on fuel, that is only an estimate. And also don't let it get that low on a regular basis because it will damage your fuel pump, fuel is used to cool electric pump in fuel tank and running it that low will shorten the life of your fuel pump.

Feb 23, 2011 | 1999 Ford Expedition

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91 honda civic dx. The gas tanks holds about 12 gallons. I can only drive to half a tank (about 200 miles), then the car dies. (When I refuel I can only put in about 6 gallons). After about 150 miles after...


Fuel tank venting system is "stopped up" somewhere along the line (this is also called the Evaporative Emission Control System). Suggest taking it to a shop for a diagnosis.

Charlie

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1 Answer

Why my 2000 saturn regurgitate fuel when I try to fill it up.


Check the fill hose,And check the airline to the tank

Apr 11, 2010 | 2000 Saturn SL

2 Answers

Gas gauge was working went to put gas in started up after we filled up the tank gauge went up then droped to empty.


Unfortunately......you have a gas sending unit that has failed....and yes it is located in the fuel tank...these GMs have had a very notorious tsb for the fuel tank pump and unit assembly failing due to design.....theres nothing you can do to repair this ....but you can replace this unit.....it's kind of a bear with a full tank of gas if you're gonna be doing this yourself....on the ground...this fuel tank pump unit is found quicker and more reliably at the dealership. ...HOPE I HELPED!!!!!

Nov 14, 2009 | 2006 GMC Envoy Xl

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1994 Dodge Grand Caravan - Start car, showing 3/4 tank of gas, drive 12 miles, guage has dropped to empty and gas light come on. Restart car and showing 3/4 full. Any ideas?


MAYBE THE PROBLEM IS IN THE TANK PROBABLY THE CIRCUIT ATTACHED TO THE FUEL PUMP THE ONE READ THE FUEL IN THE TANCK IS GOING BAD

Jul 29, 2009 | 1994 Dodge Grand Caravan

1 Answer

Getting way less milage after fuel was replaced : HELP


First off,If the mechanic didn't have the pump in his hand when you met,Have the car towed to his shop right then and go into work early,He didn't put a new one in and have your car back in 2 hours (since the pump is located inside the fuel tank and the tank must be removed to get to it and)

Not saying it can't be done in 2 hours,if all the tools,parts,and ducks are in a row waiting for you.

Secondly,Additives are great until you over use them,mix and match them,Etc.....

To the search questions
#1 The filter should have been changed with the pump or at least at the same time.
#2 The fuel pressure should have been tested by the mechanic after installing the new pump.
#3 If you have a vacuum leak,the car will run rough or at a higher or lower idle.

Try a good tune up.The additives have probably fowled the plugs and may even destroyed the injector seals inside.

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1 Answer

Gas gauge not working


Defective sending unit in gas gauge.

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91 buick regal wont start


maybe swallowed a fur ball... put alot more gas in... 5 or more gallons and retry... with full charged battery

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