1990 crx si with a b16a. Idle goes down to 500 or little less, almost dies and kicks back up to around 700-800. Then does it again every 5 or so seconds. Whats the problem here. Wont do this when it starts up, only after the car has been driven for a couple minutes.


Modified by ch0 at 11:24 PM 5/11/2005

 

are you flashing any codes?

 

Code 23, knock sensor.

 

http://www.we-todd-did-racing....DE%3D
https://honda-tech.com/zerothread?id=468260


theses links should help you out

 

So what exactly is the knock sensor for? Is this why my idle is weird?

 

bump

 

bump bump bump

 

bump

 

The Knock sensor senses any vibration in the block that's not suppose to be there. It shouldn't affect your idle. Mine does that after it warms up, but i have a chipped ECU, and that usually happens with those. Is yours chipped? If not, then the only other thing i can think of is your alternator might be wiggin', i've had that problem too.

 

Its non chipped pr3.