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High idle b230f, out of ideas. 200 86

posted by  someone claiming to be Ian B. on  Thu Nov 9 00:08 CST 2000 [RELATED]

Hi folks,

I have tried all the tricks I can think of with this.

Everything is clean and adjusted (this problem arose when throttle body was cleaned) the cis was open circut and has been replaced, but still the same 1250 rpm. Sorta like if you disconnect the tps it runs fast.

Throttle plate and tps is correctly adjusted, have swapped a tps that I know is good and fixed any sign of harness trouble.

Have checked for vac leaks, nothing. We have vac at breather hose from flame trap, the 1/2" hose that connects to intake tube opposite cis intake.

When cis intake hose is pulled the engine stalls and when breather is pulled it drops about 300 rpm, back to 950 rpm. The throttle body was seriously crudded and maybe someone tried to cover the problems by making adjustments.

I have since returned it to factory settings so I'm getting short of places to go on this now and would greatly appreciate your help. After checking the archives and faq and didn't find the answer there I'm hoping someone has some ideas on it.

Thanks to all for taking the time to read this.





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