engine problems

Asked by Jan 06, 2016 at 04:20 PM about the 1991 Chevrolet C/K 1500

Question type: Maintenance & Repair

Okay guys I have a 91 Chevy 1500 4x4, 350 5.7L,
truck was running fine yesterday, went to start it
up to day and as soon as it cranks up it chokes
really bad and cuts back up, tried pumping the gas
too but it didn't help, I've already changed the fuel
filter, fuel pump, fuel relay, and the fuel pressure
regulator, jus tried to crank it back up to see the
results but nothing has changed, still chokes up
and cuts off in a matter of seconds. What else
could it be?

7 Answers

Meant it cuts back off not cuts back up

Did you try the watch idle sensor


So it will fire off? If so I'm thinking a vacuum leak. I would check the TBI base gasket, and snug up the intake manifold. The Idle Air Control Sensor is a source of a major vacuum. Be a good idea to pull that out, and have it checked at Auto Zone, Also the port that it plugs into would need to be cleaned out good. Best take the TBI off and give it a good cleaning. This is not to say that the injectors may be dirty or bad. They should be spraying a nice cone pattern of fuel with no droplets of fuel.

1 of 1 people found this helpful.

Yeah it fires up but then chokes up really bad and cuts off, I was searching and found that it could be the ignition coil or ignition control module, but im not sure


Try disconnecting the single brown with black stripe I believe by the heater unit up on the fire wall, this is for advancing the timing and see how it acts. This would relate to the coil pick-up in the distributor.

1 of 1 people found this helpful.

The ignition control module in the distributor can be taken out and tested at Auto Zone along with the coil. The magnetic coil pick-up has 2 wires running to it. Pull on them slightly to see if one of them broke off also.

Possibly stuck open egr.Pull off vacuum hose and plug it after the EGR and see what happens.

Your Answer

C/K 1500

Looking for a Used C/K 1500 in your area?

CarGurus has 859 nationwide C/K 1500 listings starting at $2,000.


Chevrolet C/K 1500 Experts

  • #1
    Andrew Olsen
  • #2
    John Saffrahn
  • #3
View All

Related Models For Sale

Used GMC Sierra 1500
857 Great Deals out of 65,105 listings starting at $2,495
Used Ford F-150
2,287 Great Deals out of 183,832 listings starting at $699
Used Chevrolet C/K 2500
198 listings starting at $2,598
Used Chevrolet C/K 3500
228 listings starting at $700
Used Chevrolet Camaro
403 Great Deals out of 30,700 listings starting at $3,550
Used Chevrolet S-10
6 Great Deals out of 1,205 listings starting at $2,500

Used Cars For Sale

1998 Chevrolet C/K 1500 For Sale
170 listings starting at $3,500
1997 Chevrolet C/K 1500 For Sale
144 listings starting at $3,999
1995 Chevrolet C/K 1500 For Sale
88 listings starting at $2,000

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.