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1G Bad idle after I put throttle body gaskets on wrong

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mitsuowner1991

mitsuowner1991

10+ Year Contributor
304
7
Sep 29, 2009
West Keansburg, New_Jersey
Car was running ok.. went and changed the thottle bodie gaskets and by accident i put the one on the wrong way and i started the car the idle srarted surging. So i looked under hood heard the hissing from the TB gasket i put on wrong.. so i corrected the gasket and no more leak but i still have the surging idle.. Can you mess anything else up if to much air gets in there? Im starting to think it somehow messed the TPS up.
 
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mitsuowner1991 said:
Car was running ok.. went and changed the thottle bodie gaskets and by accident i put the one on the wrong way and i started the car the idle srarted surging. So i looked under hood heard the hissing from the TB gasket i put on wrong.. so i corrected the gasket and no more leak but i still have the surging idle.. Can you mess anything else up if to much air gets in there? Im starting to think it somehow messed the TPS up.
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No. But you probably inadvertently fixed a leak and now your idle needs readjustment. So do that.
 
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The car wants to see .63 at idle so I'd start there. Fixing the seals is also probably going to affect your BISS screw adjustment.
 
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The factory manual says .48-.52v. ECMlink wants it at .63v.

There are many places air could be leaking though I would at least try to adjust the BISS first. With how old these cars are seals start to get hard and could start to leak. Injector insulators, BISS o-ring, vacuum lines, gaskets, shaft seals, ISC o-ring, FIAV housing o-ring. If adjusting the BISS doesnt work start checking for cracks or hard seals.
 
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