S13- Crazy Idle Problem

[grks13kat]

Hey guys.So I have a 91 s13 with a stock ka24de. When i turn the car on and pull up to a stop light or sign and then engine is still not fully warmed up it begins to drop idle between 500 and 100 crazy fast. :wtf:
It feels as if im Gassing and Breaking super quick. In order to get it to stop I have to put the car in Neutral.But it doesn't always do this. Once the car is warmed up it acts normal. Any suggestions? Its scary as shit when the car randomly starts gassing you forward. Any help is much appreciated.

[stealthsr20]

Have you checked your tps and your maf... timing?

[rollout240]

number one- WARM YOUR CAR UP!!
number two- check your maf.

[stinky_180]

sounds like a mal-functioning AIV.

[teamsprock]

Idle issues, that go away when the car is hot, sounds like a bad Coolant Temp. sensor. Just fixing the vary same issue on my sr20 right now. Not familiar with ka's so take my advice with a grain of salt.

Check ECU for codes

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