IACV Problem?

[ric]

welp i took the throttle body of my moms 97 civic dx with a d16y7 today to clean it up because she has had an unusualy high idle which was not correctable by adjusting the screw. i cleaned all the parts out with throttle body cleaner and assembled it all back together again and started the car and now the idle surges drops surges drops surges drops and so on. its hunting for an idle basically and cant find one. i am almost absolutly sure its the idle air control valve but wanted to see what other people thought before i bought a 200$ part. i have three sensors to guess and they are all expensive as hell, IACV, MAP sensor, and throttle position sensor. tell me what YOU think.


thanks for any help.
rick

[EightOhOne]

is the ecu throwing any codes? with those sensors theres usually a code for each of them individually... are all the vacuum hoses connected securely and in the right place, you never know, if you took any off you may have misplaced one and not noticed.

[ric]

Originally posted by EightOhOne
is the ecu throwing any codes? with those sensors theres usually a code for each of them individually... are all the vacuum hoses connected securely and in the right place, you never know, if you took any off you may have misplaced one and not noticed.

nope no codes, just a jumping idle. and believe it or not there are no vacuum lines the run into the dx throttle body. oh and its not the idle air control valve like i thought, that is actually integrated into the throttle body itself the valve im talking about is the rotory valve.

[hondaman-iac]

usually the jumping rpms are associated with:

idle set to high (try readjusting the rpms)
vacuum leak. if one of the sensors were burned the idle should go reaaly low, almost to the point where the engine stalls.