IAC idle surge please help
 

my 2000 civic si was throwing a cod for the iac. i just replaced it after work, and now the car surges, and white smoke is coming out of the exhaust. im not sure exactly what i have done wrong since it was two bolts and a plug. please help!

Re: IAC idle surge please help
 

car doesnt overheat, and stays at correct temp.

Re: IAC idle surge please help
 

is it for the right motor?

Re: IAC idle surge please help
 

should be. the box didnt come with anything saying otherwise. the iac's look identical. i ordered it through my work from honda.

Re: IAC idle surge please help
 

found out i left a vac hose off of the ps when doing my mounts. only problem is i pluged it back up and it didnt fix anything. car is still surging in neutral and letting out white smoke when giving the car throttle. please help. car is my daily.

Re: IAC idle surge please help
 

Is the IAC OEM? Make sure none of the hoses are ripped.

Re: IAC idle surge please help
 

yes i got the iac from honda. i will over look the hoses. that might make alittle sense if so since i had a little pain with one of them.

Re: IAC idle surge please help
 

White smoke and the surge makes me wonder if you somehow hooked up a coolant line where a vacuum line should go.

Re: IAC idle surge please help
 

http://h-tune.co.uk/tech/?p=552

Check this OP.

Re: IAC idle surge please help
 

saying you guys think maybe i switched the two lines to the iac?

Re: IAC idle surge please help
 

Not so much thinking of those 2 lines, but wondering if there are any other lines that could be crossed... you mentioned leaving a vac hose off when doing your mounts. Just sayin, double check ALL the vac and cooling lines.

Re: IAC idle surge please help
 

yep a vac line to the manifold was off. wierd though because i never touched that line. maybe i hit it off, and didnt notice. the white smoke has decreased ALOT, but still at correct temp with throttle some is still coming out of the exhaust. anyone have an idea why, and hopfully not the head gasket :(

Re: IAC idle surge please help
 

bleed ur coolant system and restart ur ecu afterwards.

Re: IAC idle surge please help
 

Is it cold out where you are (below 50)? If it dissipates quickly its probably water vapor, a byproduct of combustion. If it has a sweet smell to it, then it may be coolant. Do you hear any hissing from the engine bay? Try spraying some brake cleaner on the vacuum hoses with the car running. If you hear a change in RPM then you know where to start looking for a vacuum leak. Also, did you bleed the cooling system and use new O-rings on the IAC?

Re: IAC idle surge please help
 

Well check you head gasket. Are you loosing coolent?

Re: IAC idle surge please help
 

reset the ecu its still thinking the old iac is on ad running rough