raidacaipo

I did an h2b swap and my idle drops to about 1000rpms and stays there. The manual states 700rpms when warmed up and idling.

Things I already checked:
Make sure throttle cable is loose
Adjusted tps and checked it
Checked for any vacuum leaks (none)
Properly bleed my cooling system
Cleaned my IACV with brake cleaner
Tried adjusting idle screw with flathead

What could be the problem? any one know or have similar problems?

elementR559

timing..?

raidacaipo

actually I havent adjusted my ignition timing.. maybe I should mess around with the distributor a bit?

MHDesigns

I dont know about the h series but does it have a FITV? if so this could be the culprit.

trustdestruction

My idle is 150-200 RPMs higher than manual states. I don't take much notice to it anymore. I've tried just about everything.

MHDesigns

Same here. Mine sits at 1000-1100 but it runs great so **** it.

trustdestruction

exactly the same thoughts here. My engine runs great, so I just ignore it.

raidacaipo

yes It has a FITV.. I also read in the prelude manual that the fitv could be the problem..

raidacaipo

yeah mines stays at 1000 rpm warmed up.. it runs fine too and no problems but Im a perfectionist and I usually try and keep everything up to par with factory standards. lol

MHDesigns

Look up FITV in search and you should find a write up on how to clean your FITV. yoou can also just adjust it.

trustdestruction

I doubt the FITV will solve it. FITV problems usually cause a surging idle, not just a 1000RPM idle. I had to replace mine before due to a 2000-3000RPM surging idle. My minor 150-200RPM high idle remained even after replacing the FITV.

MHDesigns

Really? My surging idle came from a bad IACV not FITV. It would make sense that a bad FITV can cause a IACV to freak out though. Anyways did you check your idle screw? adjusting the FITV, bad or not, can adjust your idle speed as well. You just have to turn the urethane screw thing in the middle. Check the write up it will tell you which way is up and which way is down.

trustdestruction

Hmm, might have to give that a try.

MHDesigns

In case anyone is curious the write u is HERE

raidacaipo

cool thanks.. I will have to try this and see what happens.. I just want it idling at 700rpms like my old gsr motor swap..