i have a 91 da i bought from a friend and the rpm jumps pretty rapidly in between 1000-2000 rpm. I unplugged the iacv and it jumps slowly from the same to like 3k rpm. What should I do to try n fix this problem? I dont want to buy a new iacv until i find out that thats the problem with the car..its a b18a1 with a 99 ls head but has the original 91 tb and im. Please help thanks..

 

Search man...

https://honda-tech.com/forums/showth...iacv+how+clean

 

I did today but couldnt find anything for my application I might have missed that one but thanks for the help man Im goin to to do try that tomoro and will post if that works THANKS!

 

Yup, whenever you search, limit your search to a specific forum. It makes it much easier to find what you need.

 

Well I'll give you the low down, if you did the cleaning properly and it didn't work, then open up the fitv and screw in the white plastic part tight til it stops, if this doesn't work it might need replacing, but ensure there is hot coolant flowing through the fitv, that's what makes the rpm's drop when you start a cold motor and it's at a constant 1500 rpm's and slowly decreasing. If this isn't the problem then get some starter fluid and spray around the gasket on the intake manifold and throttle body gasket, if the car revs up then you have a leak in your gasket and it needs replacing. Hope this works cuz this **** was a pain in the *** when I had it. LMK.

 

The first thing to do in this situation is to check the coolant level. Make sure the radiator is full; don't just look at the overflow bottle.

 

yea its def been a big pain. Ive been so damn busy i havnt had time to mess with it but im goin to try n play around with it tomoro..

 

so i pulled off the iacv this morning and it had no gunk build up what so ever..if you cover half of the hole the tps is conected to on the inside of the throttle body it quits surging..what does this mean? aand i cant find the fitv

 

any1..usually this site is awesome for help and assistance i guess not