S14 SR20DET Idling at 1500+/-

[gerardojdm]

Sup fellas? I've been having a idling issue with my car. It's a S14 SR20DET. When I turn the car on in the morning, it idles at 1500rpm, but when it reaches normal temperature, it's still at 1500rpm and not 1000rpm like it's suppose to. After driving the car for an hour or so, it's idling at 2000rpm. So what I do is I leave the cooling fans on while the car is off and let the car cool down. After 10-15 min of cooling, I turn the car back on and the idle is back at 1500rpm so sometimes it magically goes back to 1000rpm. I've already cleaned the IACV and even turned the screw all the way in! There are no vacuum leaks so the only thing I can think of is the TPS. No CEL is on so I could use some help. Thanks!

[projectblak]

Definalitly check the voltage on the tps, those things cause all types of weird problems...
Also I had a problem like this my throttle cable was caught behind the motor and the tension on it caused the throttle to be partially open .. Just a thought. Gl

[steve shadows]

Sup fellas? I've been having a idling issue with my car. It's a S14 SR20DET. When I turn the car on in the morning, it idles at 1500rpm, but when it reaches normal temperature, it's still at 1500rpm and not 1000rpm like it's suppose to. After driving the car for an hour or so, it's idling at 2000rpm. So what I do is I leave the cooling fans on while the car is off and let the car cool down. After 10-15 min of cooling, I turn the car back on and the idle is back at 1500rpm so sometimes it magically goes back to 1000rpm. I've already cleaned the IACV and even turned the screw all the way in! There are no vacuum leaks so the only thing I can think of is the TPS. No CEL is on so I could use some help. Thanks!

It sounds like some sort of vacuum leak...:hyper:

OR

most likely your timing is way way off...overly advanced

Buy a cheap timing light and look for the FSM instructions on setting the CAS to 15 bdtc properly. You'll need a rachet and a small extension with 12mm sk.

Good luck!