Question about GMC Cars & Trucks

1 Answer

1998 gmc c7500 topkick, replaced fuel pump but it's still not cranking and when it does, won't stay cranked. Like it's not getting fuel, any suggestions?

Posted by on

  • dspoke Sep 22, 2015

    What engine? 8.1L gas...Is it turning over and just not firing? Can you hear the fuel pump run when you turn the ignition switch on? If the answer is yes to both of these, check your crankshaft position sensor. Diesel engine you will need to check fuel pressure to the injectors.

×

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.

  • GMC Master
  • 5,313 Answers

First, use test gauge to check for correct fuel pressure. Bad regulator could be the issue, or badly clogged fuel filter. Next, test ignition module.

Posted on May 24, 2015

6 Suggested Answers

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

  • 9 Answers

SOURCE: Truck won't stay running

if it is a electric fuel pump take the fuel line off carburator and get a three foot gas line hook it up to the gas line on the car run gas line into an empty gallon container and turn key on and see if you are getting a good flow of gas

Posted on Jun 23, 2008

jmgldsmth
  • 1869 Answers

SOURCE: topkick cat 3116 wont start

Check your fusible links; these are small wires molded into the middle of a bigger wire they are usually located up by the battery cables. When they burn they become discolored and softly flexible. Also check your relays too.

Posted on May 20, 2009

iambanshee74
  • 3489 Answers

SOURCE: 1998 Lincoln Town Car cranks but does not start.

possible just not probable. you need to see if there is any pressure to fuel rail. if not youre going to have to by pass the fuel pump and see if it is getting voltage. if so then apply a seperate voltage and ground wire to the pump to see if it kicks on. come to think of it, it could be the PATS system(security) that shuts down the system. it will crank but will not fire. your ford dealer will need to reprogram the system.

Posted on Nov 03, 2009

alicantecoli
  • 22114 Answers

SOURCE: Van will not start. It Cranks and the fuel pump

wont turn over??sounds like the timing belt has broke and pistons hitting the valves

Posted on Nov 20, 2009

alicantecoli
  • 22114 Answers

SOURCE: 1998 100 Series Landcruiser won't start. Cranks and has fuel pressure. Sometimes fires once, but won't start. Mostly just cranks. Any ideas?

Check the fuel line pressure it may be low should be 55lbs

Posted on Apr 15, 2012

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

97 gmc 1500 350 5.7 new fuel pump and filter it cranks over but wont start


Kelly, could be a few issues, security lock out, crank sensor, fuel pump fuse/relay, faulty new pump,faulty ignition switch, etc. Attached links may help you diagnose the crank no start issue you are having.
Check the attached links,video,instruction and guides, Good luck
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."
96 98 Chevy pickup cranks but won start first steps
GM no start no fuel troubleshooting
No Start No Spark Cranks OK GMC Jimmy S10 Blazer


Apr 24, 2016 | GMC Cars & Trucks

1 Answer

1994 GMC Topkick not getting power from the fuel pump. Where is the fuel pump relay located?


Before going there, check your INERTIA SWITCH (INTERTIAL CUTOFF SWITCH). A small accident or a sharp bump can cause the cutoff switch to trip. The switch is located adjacent to the passenger side rear shock tower, and there is a pushbutton to reset (on most Topkick tucks). Carbureted Topkick trucks do not have cutoff switches, and some custom trucks have the inertia switch relocated.

May 13, 2015 | GMC Cars & Trucks

1 Answer

1998 gmc sierra start won


check for spark.. if no spark replace autoshutoff relay it controlls fuel and fire..

Dec 08, 2013 | 1998 GMC Sierra

1 Answer

1998 GMC K1500 Sierra SL 4wd Truck will crank but not start I cant get any fuel


The first thing i would check is the fuel pressure. the fuel pump may be running, but that doesn't mean that it is putting out the right amount of fuel

Jul 30, 2013 | Cars & Trucks

1 Answer

'98 sierra, k1500, 5.7 won't start until cold crank for 15 seconds


COuld be some problem with the starter, sometimes, when the starter warm, occurs this no start condition.

Aug 23, 2012 | 1998 GMC Jimmy

2 Answers

Chevy Malibu 2003 cranks but won't start! I know


You might have a defective fuel tank pressure sensor!

May 05, 2012 | 2003 Chevrolet Malibu

2 Answers

Topkick cat 3116 wont start


Check your fusible links; these are small wires molded into the middle of a bigger wire they are usually located up by the battery cables. When they burn they become discolored and softly flexible. Also check your relays too.

May 20, 2009 | 1998 GMC Suburban

2 Answers

Fuel System on 1998 GMC Jimmy 4.6L engine


That's right! Fuel pump is in the fuel tank, some car has opening to acces in the trunk under the carpet, some car you need to take down the tank, my advise is get your self a service manual for your truck its about $25.00 and it will help a lot.
Good luck.

Sep 11, 2008 | 1998 GMC Jimmy

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

Related Topics:

292 people viewed this question

Ask a Question

Usually answered in minutes!

Top GMC Experts

yadayada
yadayada

Level 3 Expert

75797 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...