Question about 1991 Chevrolet C1500

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1991 chevy c1500 stalling

My 1991 Chevy c1500 started stalling out when Id put it into drive. It sometimes takes 3 starts for it to go. Today it shut down without me putting it into drive, then ran fine after two starts. Doesnt stall when I give it a little gas and will run fine and idle fine when Ive been on the road for a few minutes. We have checked the block ground, map sensor is connected but dont know if its good, vacuum seems fine, please help

Posted by jarrod barlow on


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Usually a problem with a dirty throttle body or a faulty idle air control valve. The computer controls idle speed by regulating how much air enters the intake thru the valve.

Posted on Oct 13, 2012


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SOURCE: 1996 Chevy S10 stalls out 3 times before steady start

check for loose or cracked vacuum lines, and/or the rotor. It may not be making consistant contact.

Posted on Oct 30, 2008

Wood Chuck

T Lowery

  • 34 Answers


Check your fuel pump presure. Pump is in the tank. Also try and loosen the fuel cap, the tank vent may be stopped up.

Posted on Sep 15, 2009

micah lenfest

  • 540 Answers

SOURCE: My 95' Chevy diesel k2500 stalls out when im Driving

I have replaced many injector driver modules on these diesels. GM has redesigned it and i have never had a replacement one fail. This is a known problem for the 6.5 diesel. Unfortunately its about a 500 dollar part from the dealer, and requires intake removal, and some very tight work space to replace.

Posted on Mar 22, 2010

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Philip Long

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SOURCE: 1987 chevy S10 engine idle problem

relace the throtle air idle valve.The temp switch will allso cause this problem.

Posted on Jul 19, 2009

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