1994 suburban will run for a little bit then quite.

Bruce Bracey

• 1000 Answers
• Posted on Apr 20, 2009

SOURCE: 1994 gmc safair 4.3 wont run at idle and bad

Is the "service engine" light on at all?
If so, what codes are present.
Have you checked the EGR valve. If the valve is stuck, the engine will idle very poorly. You can remove it and clean the carbon deposites and make sure it moves freely.
The EVAP purge solenoid will also cause an idle problem but should show up as a service engine light problem.
Let me know.
Regards,

SOURCE: will 87 s15 2.8l throttle body sorta run if fuel

If the punp is bad it won't run at all. Check the throttle body injectors to see if fuel is coming out of both injectors. Sounds like one of the injectors is not working. If one is not working you can check to see if it is the injector or wiring by switching injector wires and see if the problem changed from one injector to the other.

SOURCE: 1996 GMC Suburban - Quit Running While Driving, Will Not Start

switch the fuel pump relay with another on in the realy box. see if you hear the pump come on when you turn the key on (should run for 2 seconds) if not, have someone rap on the bottom center of fuel tank while you are trying to start the truck if it starts, the pump is bad and you will need to replace it. if you hear the pump run and is doesnt start, it may be a spark problem , verify if you have spark. this engine needs 58-62 PSI fuel pressure, if it has 55PSI, its not going to run.

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SOURCE: I have a 1991 GMC suburban, it started fine and

You need to replace the fuel filter every 30000 miles.The gas stations tanks are full of dirt. Also check the flow of the catalitic converter.Put your hand at the tail pipe while someone is pushing the gas petal down. The farther they push the petal the more exhaust should be coming out.
I hope this helps you