I have a 95 Chevy Suburban. K1500. Its been having issues with a high
rev at idle, chugging and occasional stalling. It also does it when
city driving, but not so much on the highway, but has gotten to the
point I have to shift into neutral at every stoplight. In the past
month the following have all been changed:
check everything that is vacuum controlled. check all vacuum line,s....are you getting any trouble code,s?...check everything from the M.A.P. sensor [ if so equipped] , intake manifold gasket , I.A.C. or idle air control unit , right down to the vacuum brake booster valve & the booster it self. any vacuum device or gasket is suspect...you can use carburetor cleaner to detect leak,s but I prefer a light oil...apply to suspect area...if it get,s sucked in & you notice a small puff of smoke you will have found the problem...your catalytic converter could cause the problem,s your experiencing also. best of luck!
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