Question about 1993 GMC Sonoma Club

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1991 gmc sonoma random loss of power

-5 speed v6 1991 sonoma
my sonoma loses power randomly (back pressure ??)
really got it reve it .. pops a few times and then runs smooth
took it for a run around the block a few times today and lost "power" about 5-6 times.. runs great when its not losing power
-truck is also having rough starts (really gotta hold the key when turning it over)
im new to this site and am really hoping someone can help me out :)

any ideas? ---cheers

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Could be the crankshaft sensor causing the timing to be off if it has a coilpack type distributor or if it has a gear driven distributor then it could be either the distributor itself or possibly just cap and rotor

Posted on Feb 13, 2009


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