S13 ka24e idles low and high

[Stunt'nSlide]

When I start my car it kinda hesitates. It always start but when it's idling it jumps around very slightly basicly sounds like it has aggressive cams. After driving around a little bit a will stop and then idle either drops or is at like 1,500 or 2,000 rpms, after a little bit of idling high it drops back down and jumps very slightly like jumps between 800-900. Please help me a have a drift event I already pre registered for next week

[Arkitech]

Idle Air Control Valve (IAC)?

[Stunt'nSlide]

Idle Air Control Valve (IAC)?

yea that's what I was thinking so i took it off and soaked it in carb cleaner. I had a code 13 for temp sensor and I replaced it but the code is still there

[Mangudai]

Have you tested or inspected the ect sensor circuit?

[Stunt'nSlide]

Have you tested or inspected the ect sensor circuit?

yea my plug to the ect sensor is good

[Mangudai]

'89 or '90?

[Stunt'nSlide]

'89 or '90?

It's a 89. Could it be my ecu?

[firefighter573]

I have a very similar issue in this thread.

http://zilvia.net/f/engine-tech/452158-ka24e-high-idle-after-warm-up-sohc-genius-look-here.html#post4684821

[Pumpkin]

u should definatley check your maf, and any vaccum leaks and try replacing the pcv valve its inexpensive and makes a huge difference if it never has been changed .