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high revving on start and then a rough idle....ideas? 200 1986

posted by  someone claiming to be chris with an '86 245 on  Sun May 1 06:42 CST 2005 [RELATED]

i posted a message a week ago or so about an irratic idle...well i cleaned out the TB and put on a new gasket with no improvement. for those just now hearing about this i've replaced intank pump, fuel filter, air filter, flame trap, plugs, cap, rotor, o2 sensor, and i've checked the AMM..its still good. I've also done the throttle switch check and all is working properly. When i start the car it revs up really high to almost 3k rpms just for a second, then drops to about 1500 and finally drops down to the 850/900 that i should be after about 2 minutes. there is always an irratic idle as well, not very smooth at all. This just seems really strange.. maybe a leaky injector? intake gasket leak? i've looked for leaks around the manifold but havent found anything. This is driving me nuts!! all ideas are welcome!! Thanks in advance






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