help....big problem with my b16a ek4 idle, the idle keeps on bouncing 1000rpm to 1,500 help......

 

Several possible problems...most common are:

FITV Needs to be tightened.
IACV Needs to be cleaned.
Vacuum leak around TB/intake manifold.
Possible air bubbles in the coolent system.

Make sure there's no vacuum leaks...then check the FITV, IACV. FITV is probably your problem as it was on mine and seems to be the norm with it coming loose.

 

what you you mean by FITV, IACV???? where is that located?

 

Read this thread for FITV (Fast Idle Thermo Valve)

https://honda-tech.com/zerothread?id=699787

This one for the IACV (Idle Air Control Valve)

http://www.g2ic.com/forums/sho...=iacv

 

already finished cleaning the FITV and the IACV, and my engine idles fine now,another problem, when i hit the accelerator....it stays at 1,500 and after a 6 to 8 second...it will drop back again to 850 or 900.....why it takes that long for the idle to go back??help

 

was ur car warmed up?

 

yep, even my car is warmed up

 

do you have an O2 sensor on your car?

 

When you finish cleaning the IACV..should you spritz a lil WD 40 in it or anything...i mean it is a valve???

 

I wouldnt