IDLE problem

[clark]

what type of engine do you have?

have you checked your ECU Temperature sensor/wiring?

this sounds like your problem to me.

do you have difficulty starting the car if the engine is warm?

when you turn your AC on, it is normal for the idle to bump up. this is due to the additional load the AC compressor puts on the engine, so when the AC is activated, your ecu senses this, and bumps up the idle.

sounds like you have a KA, because most with an SR swap are either too lazy to wire this sensor, or don't have AC lol.

but yeah, it could be just shitty idle. adjust that first, then look into this lol....make sure your timing is correct also.

[jinesz32]

i got a KA, yeah i know its normal for the RPM to go up when turning the A/C on, but its weird how even when everything is off, sometimes it idles at 1500 when starting, but most of the time its at 1500 after stomping on it for awhile. then i would play with the a/c / heater etc, then it drops, kinda weird, but what the heck, at least it anit all the time. my A/C compressor was removed from the past owner, but i still play around with the A/C and for some reason it works for dropping my rpms.

[clark]

the ECU will bump up the idle at startup. this puts your engine into "warmup" mode. my KA and my SR do the same thing.

check timing/iacv/replace CTS. even if the CTS isn't the problem, you replaced a crusty old sensor that will eventually crap out.