Question about 1997 GMC Suburban

1 Answer

1996 suburban, all ignition componants replaced. starts and runs rough, occasioanlyy shuts off going down the road. sometimes it will not restart after driving short distance , if i add 3-5 gals of gas from a can it will immedialty start back up, no matter how much fuel is in the tank. tank can be half full or more and still wont start unless adding some, fuel pump? thanks alot

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Master
  • 766 Answers

As you put in your question - Fuel pump? I would agree that this is the best place to start. Check the electrical supply when ignition is on. Listen to the pump when the ignition is switched to position 2 you should be able to hear it. If any doubt persists clamp off the fuel lines to and from the pump to isolate it, and then remove it. Just before doing so note its response when still connected to the electrical supply. Many faults with pumps can be solved by stripping it down and then cleaning components and electrical contacts with a tooth brush and emery board nail file. When reassembled try connecting the electrical supply and comparing its response to the way it behaved prior to strip down. Reconnect the fuel lines. If the problem persists check the pick-up pipe in the tank and the in-line fuel filter for possible blockages. Interesting observation that you had about the need to add a couple of gallons. I would bet that just releasing the fuel filler cap and refitting it would have the same effect as adding more gas. Within the fuel tank there is partial evaporation of gas and this can slightly pressurize the fuel line. When a small amount of gas is used a partial vacuum is caused preventing flow to the engine. Releasing the filler cap should allow the internal tank pressure to equalise with atmospheric pressure.

Posted on Apr 25, 2010

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:

2 Answers

Engine randomly cut out when going over rough roads/ bumps.


Hello Tori, I think you have a heat related ignition failure. Your truck runs fine until an electrical component warms up and quits running but will restart after it cools down. I suspect you have a bad ignition module and/or bad pick up coil inside of the distributor.

Oct 10, 2015 | Cars & Trucks

1 Answer

98 Suburban will not start


Check for spark when it won't start. If no spark, it's an ignition problem-suspect the crank position sensor. The computer won't cause spark from the coils if the crank sensor gets hot and fails.

Nov 23, 2013 | 1998 Chevrolet Suburban

1 Answer

My chevy s10 died going down the road. It turns over but wont start


I have 94 s 10..4.3 v6. it does the same thing have replaced fuel pump and filter,ignition module,cap rotor plugs wires,coil,ground strap...driving down the road jus dies like the key got shut off....for a while when troubleshooting through the parts you could get it to restart.....now when it dies it cranks really hard when trying to restart..ive checked the timeing its fine....if i wait a few min it will usually start...sometimes it will show a check engine light sometimes not......never know when it will happen sometimes jus down the the road from the house sometimes 100miles down the road......sometimes three times in a mile sometimes not for weeks at a time..Wtf...Im ready to shoot it like a lame horse....its a shame too its a sharp lil truck thats a two owner and never spent a night outside in its life...i knew the original owner ...i bought it with 90,000 on it it only has 148,000 now and still looks like new...

Apr 22, 2013 | 1994 Chevrolet S-10

1 Answer

My shuts down


check ur igniter module it needs to be replaced or ur wirerinb to the module

Jul 26, 2010 | 1990 Oldsmobile Cutlass Ciera

2 Answers

1996 f350 powerstroke dies while running, like turning key off.


if it has a 7.3l then try the cranksensor it,s right on front of engine beside harmonic balancer on the passenger side they are notorious for this and aren,t expensive to replace hope this helps

Jul 13, 2010 | 1996 Ford F350 Crew Cab

1 Answer

Car is quiting while going down road


Have you ever replaced the ignition coil? Sometimes a coil will heat up and break apart inside losing your connection/charge inside it to fire your plugs.

Mar 17, 2010 | 1989 Pontiac Grand Am

2 Answers

Check engne light come on and go off ,runs rough when start up


The vehicle needs to go on a diagnostic computer and fault codes cleared from the cars computer.Once on the diagnostic it may also show if there is any thing wrong with the electrical components

Jan 04, 2010 | 2003 Chevrolet Suburban 1500

1 Answer

Basically the same is the question here, only the


i would first disconnect the system and temporarily put ignition system back in to factory spec
then run the car as normal and see if problem disapers

if yes then replace the antitheft control box

if no then you have to dignose further check the cars ecu

Dec 31, 2009 | 1996 Ford Explorer

2 Answers

1993 Land Rover stops running on when on rough roads,


I had the same problem with my 1993 range rover. It turned out to be the ignition switch. after thousands of times inserting the key, over the years this process slowly pushes the back side of the switch away from the ignition switch housing. This consists of a plastic disk which holds the mechanical stop that keeps the ignition in the run position. If the disk is not secure and tight against the ignition housing the hold mechanism will not work properly. Mine would start and run however the first time i hit a bump the ignition switch would turn its self to the acc. position and the vehicle would stop running. I found the solution on okierover.com He was very clever in his way of a permanent repair. He opened up the steering column and used tie wraps to hold the plastic disk secure against the end of the ignition switch. Thus no more automatic ignition turn offs.

Jan 23, 2009 | 1993 Land Rover Range Rover County

Not finding what you are looking for?
Cars & Trucks Logo

105 people viewed this question

Ask a Question

Usually answered in minutes!

Top GMC Experts

yadayada
yadayada

Level 3 Expert

75744 Answers

Freddy

Level 3 Expert

1311 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22114 Answers

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

Answer questions

Manuals & User Guides

Loading...