Question about 1999 GMC Jimmy

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1999 jimmy hard to start and misses intermittingly until it has been drove for a few minutes, what causes this, what do i need to replace?

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Have you figured out your problem yet? I see your problem was listed 12 months ago.

Posted on May 17, 2011

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definitely sounds like timing after reading over your other posts. I had a pontiac die unexpectedly on me in the same way, but luckily i knew an expert mechanic who filled me in. Passing it on to you as the likely culprit. about 800 to pay someone to do it, or it is actually not hard to do yourself with a socket set, screwdriver, gear puller and a weekend. Did mine with absolutely no experience at all (I was 16) and it worked perfect afterwards.

Feb 26, 2014 | 1998 GMC Jimmy

1 Answer

Tahoe not hardly moving

how is the trani fluid level? low fluid can cause this

Oct 26, 2012 | 1999 Chevrolet Tahoe

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I have replaced my fuel pump, filter, throttle position sensor, and relay on my 1992 jimmy. it runs but everytime it hits idle speed it cuts off. what could that be

It should have an idle air control valve which lets air into the intake to control the idle speed. The valve could be faulty, or dirty, or the throttle body could be dirty. The computer opens and closes the valve to regulate idle speed.

Jul 16, 2012 | 1992 GMC Jimmy

2 Answers

My jimmy seems to be missing, but only when it rains, I would like some help. Mary

depending on what motor is in your Jimmy and if it still has a distributor, that is where i would start. moisture will get in side the distributor and cause a miss fire. This is a common problem with GM trucks that still have distributors instead of coil packs. Try haveing some one replace the cap and rotor or silicone around the cap and see if it seals.

Mar 10, 2011 | 1999 GMC Jimmy

2 Answers

1999 5.3 vortec silverado 4x4. Engine intermitient hard start.

Pull the plug and inspect the color, are any of them whitish, could be coolant leaking into the combustion chamber,

May 13, 2010 | 1999 Chevrolet Silverado 1500

1 Answer

Trouble starting

Sounds like the head gaskets are leaking.

Nov 09, 2008 | 1999 GMC Jimmy

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