Question about 1998 GMC Jimmy

4 Answers

1998 GMC Jimmy Fuel Pump Failure?

I was driving home from school, got off the highway, came to a stop at the light, and the Jimmy just died. No sputtering or anything. First thoughts were fuel exhaustion... Maybe someone syphoned the fuel out of my tank? A cop pushed me across the intersection and into the gas station where I added 10 gallons of fuel which means there was still 8 in the tank. Got towed home and went to work on it the next morning. We listened for the fuel pump to engage but are unsure what to listen for, which makes me think that is the problem. Checked the spark plugs for spark, good. Replaced the fuel filter. It's still just turning over but not firing up. Gonna try to listen for the fuel pump again this morning and go get a fuel pressure gauge. Also, we checked the fuse box and did the poor man's test by switching the Fuel Pump fuse with the Horn fuse which were identical. The horn worked with either fuse. Is that an valid test? Any more ideas?

Posted by on

  • 3 more comments 
  • applewoods Feb 11, 2009

    Ok, I have listened for the fuel pump and heard nothing. Now I suspect the process involves draining the fuel tank, relieving the pressure in the lines, removing the fuel tank, and finally replacing the fuel pump. My question is how should I go about draining the fuel tank? Should I just try the old hose and barrel technique or... ? Also, how should I go about relieving the pressure in the lines? Any suggestions or tips for removing the fuel tank? Thanks again!

  • applewoods Feb 12, 2009

    New problem: The Old Kentucky Credit Card. Can't get the hose to go into the fuel tank. Is there a stopper or pressure valve or something? I would just go on taking the tank off but I know there is full fuel in there which works out to about 102 lbs plus the weight of the tank itself, which isn't a problem if I had someone to catch it, but I don't. Suggestions? Special type of hose?

  • applewoods Feb 13, 2009

    Excellent, thank you for the advice. Gonna try a smaller hose today and if that doesn't work I will gather up a few friends and we will give it a go. Will report back with the outcome.

  • applewoods Feb 25, 2009

    Ok, here's an update...


    Took the fuel tank off after determining it was most likely the fuel pump. Went to the scrapyard and bought a new (like brand new) fuel pump for $189.00. Then came back home, emptied out the rest of the tank, cleaned it, let it dry and tried to install the new fuel pump. Unfortunately, it was about a quarter inch too tall. Took it back to the scrapyard, they said they would order a new one and it would arrive in one week. So I have waited the week, called them today only to find out that the pump is on back order (?!) and he didn't know when they could get one. I am going to get my refund later today and have already gone to O'Rielly's and purchased a new pump from them for $285.00. Now I find that the electrical connector is different and I just finished cutting the old one off and putting the new one on. My problem now is that the rubber seal that goes between the fuel pump and the fuel tank is too large! And my old pump is in my friend's car along with the old rubber seal. The obstacles seem to be never-ending. But I am determined to fix this vehicle, come hell or high water! Anyways, I'll let you guys know if the problem really was the fuel pump by tomorrow. Thanks for the tips.

  • mejaynes Apr 23, 2009

    How do you disconnect the fuel line from the gas tank. I have dropped the tank, but cant figure out the plastic connectors that hook onto the fuel pump.

×

4 Answers

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Genius:

    An expert who has answered 1,000 questions.

  • Master
  • 1,118 Answers

Your on the right track with the fuel pump test, chanses are its the pump thats went out. its best to have two people one to turn key and one to listen out side of car, the best way to hear if it runs. Now don't be fooled just because you hear the pump it can run and still not put out any pressure, thats ware the test comes in.

Posted on Feb 09, 2009

  • 2 more comments 
  • ccn7 Feb 12, 2009

    Well as far as relieving pressure in lines. there won't be any. as far as draining gas (the old kentucky credit card) witch means get a hose and siphen as much as you can out. Uhook fuel lines, electrical wire, ground strap, filler neck, maybe rear drive shaft could be a little easier with shaft out of the way, and last the straps that hold tank in make sure you spray them with blaster or wd40. The sending unit has a ring that holds it in tank use a screwdriver or chizel and hammer tap it around, you will see how it goes, just remember how it comes out because it has to go back in the same way. Good luck. have any problems come back and i'll help.

  • ccn7 Feb 12, 2009

    Well as far as relieving pressure in lines. there won't be any. as far as draining gas (the old kentucky credit card) witch means get a hose and siphen as much as you can out. Uhook fuel lines, electrical wire, ground strap, filler neck, maybe rear drive shaft could be a little easier with shaft out of the way, and last the straps that hold tank in make sure you spray them with blaster or wd40. The sending unit has a ring that holds it in tank use a screwdriver or chizel and hammer tap it around, you will see how it goes, just remember how it comes out because it has to go back in the same way. Good luck. have any problems come back and i'll help.

  • ccn7 Feb 13, 2009

    If you keep turning the hose as you try to get it in it will go, its got to get past the baffels in tank.( the smaller the hose the better like garden hose) If you still can't get it, than use a floor jack and balance it on there, and get a couple of your buddys to help balance it than you should have no problem. If it starts to go and you can't control it get out of way and let it go, its not worth getting hurt over, once you get it out, you can drain the gas out the hole where sending unit goes. Sorry it took so long to get back, i was on a mission.

  • tresa_123
    tresa_123 Oct 13, 2012

    i have a 97 jimmy when i turn the key i dont hear the fuel pump engaging what can i do

×

  • Level 1:

    An expert who has achieved level 1.

    Corporal:

    An expert that has over 10 points.

    Mayor:

    An expert whose answer got voted for 2 times.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 19 Answers

Can I ask WHERE is the fuse that you said you checked, I can not find a fuse anywhere in my 1997 Jimmy, Checked all the markings on the fuse cover that is on the end of the dashboard, None says fuel pump, Although all of the fuses are checking to be good, there is no marking on the cover that says fuel pump, Where is the fuel pump fuse in my 1997 jimmy .?????

Posted on Dec 05, 2011

  • Tony Griffey Dec 05, 2011

    Also How much voltage should be at the pump, The purple wire has 4.99 volts the other three wires has no voltage, Although I removed the fuel pump and put 12 volts to the pump it still did not run.???

×

  • Level 1:

    An expert who has achieved level 1.

    Mayor:

    An expert whose answer got voted for 2 times.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 2 Answers

First check the fuel pump relay located in the glove comparment, you can switch with another one, they are the same. It that does work, Stand outside the drivers door, turn key on and listen in the rear left panel and you will hear a humming for about 2-3 seconds, thats the fuel pump. Sometimes it may hum but not have enough pressure, which will cause the car not to start.

Posted on Feb 25, 2009

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

There usually is a way to relieve the pressure in the fuel line. Look on top of the engine near the plenum , look for aluminum tubing and it will have hidden back there somewhere a stem, that looks like a tire valve stem. There is even a cap on it that looks like a valve cover stem. Take the cap of and depress the plunger with something small, as if you were letting out air of a tire, except it will be gas.

Posted on Apr 22, 2009

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Was driving my 1999 GMC Jimmy and it died a few blocks from home, when I tried to restart, I noticed. the gas gage didn't move, at first I thought great I ran it out of gas, I added a few gallons and


you might have to replace the fuel pump as the small plastic gears need fuel to lubricate them and with out fuel they tend to mess up bad.

Jan 21, 2014 | 1999 GMC Jimmy

1 Answer

Problem for GMC 1998 Suburban DIESEL DIES while


Its called the fuel pump cylinoide which is attached to the fuel pump. Unless the fuel pump is bad, you got an expensive part to buy around $2500 or the cylinoide is $900 whichever is broken. This is a know issue for GMC deisel suburbans 6.5.

May 12, 2010 | 1998 GMC Suburban

1 Answer

Fuel pump not comeing on 1998 gmc jimmy how to test the pump?


this is the highest failure rate of any part. I've been in auto parts for nearly 10 years and one thing is certain, you need to replace your fuel pump. Do not get a Carter brand pump. ONLY get a Delphi or Genuine GM pump. The less expensive pumps last about 1000 miles.

Dec 29, 2009 | 1998 GMC Jimmy

1 Answer

I have a 1998 GMC Jimmy. Cranks, but won`t start. Fuel is full. Engine stopped while driving. Battery light came on. Any suggestions?


the battery indicator light usually comes on after a lose of power. Sounds to me like either bad gas, clogged fuel filter or a bad fuel pump. Easiest way to check this is have someone turn the key while you stand at rear side of vehicle and listen for the whinning noise a functioning fuel pump makes as it pressurizes the system.

P.S you dont have to start vehicle to check pump. only requires turning the key to the on position. Good Luck

Dec 07, 2009 | 1998 GMC Jimmy

1 Answer

GMC Jimmy just dies


its vapor locking,try leaving the gas cap a little lose

Jun 18, 2009 | 1986 Pontiac Fiero

1 Answer

Check Engine Light came on


get a scanner check code sound like vechicle speed sensor.

Apr 20, 2009 | 1998 GMC Jimmy

2 Answers

1998 GMC Jimmy, bogged down, stalled and won't sart back up


does it have spark? you did verify fuel pump working properly? could it have a clogged converter? is the engine lite on?

Nov 16, 2008 | 1998 GMC Jimmy

Not finding what you are looking for?
1998 GMC Jimmy Logo

4,551 people viewed this question

Ask a Question

Usually answered in minutes!

Top GMC Experts

yadayada
yadayada

Level 3 Expert

70347 Answers

Freddy

Level 3 Expert

1311 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22041 Answers

Are you a GMC Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...