Question about 1996 GMC Jimmy

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1996 GMC jimmy stalls when put in D or R

Just got done rebuilding my 4.3L Vortec and got the motor running good. However, a plug on the side of the tranny was unplugged. I plug it in and when I try to drive, it grabs too early and stalls. Same with reverse. If i remove the plug, it drives, but in 3rd gear. I know it won't shift when plug is unhooked, but why is it stalling? Computer need reset?

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  • justindp
    justindp Sep 29, 2008

    Motor runs great. However, when I put it in drive, it wants to take off and since RPMs are low it stalls. Its like the torque converter is grabbing and it shouldn't be....

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Myne did the same thing. It was the fuel pump. it didnt seem like it to me, but when replaced, it worked like new,

Posted on Jan 21, 2009

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EGR valve can be take off and cleaned, but what it sounds like is the fuel line to the injectors are leaking,put a pressure gage on the fuel line and see if it holds pressure when the key is on. it should reach 60 psi and hold for about 5 seconds without dropping. If the smell is fuel I would suspect the inlet fuel line is leaking. When you take the upper manifold off, which is easy. 10mm socket will do. If you see a clean area on your intake and the rest is dirty. its leaking. Just turn the key on, don't start and see where its coming from.

Posted on Sep 29, 2008

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