4E-FE Idle Hunt when Warm

[Idrees]

Hi guys

A friend is having difficulties getting to the bottom of this idle hunt, so I thought I would post it here.

The ECU stores no fault codes so I have advised the following, and that's all been checked.

- Replace coolant temperature sensor

- Check for vacuum leaks around inlet manifold

- Replace MAP sensor

- Replace Idle control valve

- Check/replace spark plugs

- Check/clean distributor cap

- Check/replace thermostat

Next on his list is a new throttle body with TPS, and to try another set of HT leads and distributor.

Cheers

Idrees

[loz180691]

Did you find the problem I'm having the exact same and need help

[Duduglanza]

Check the map sensor, try replacing.. then check if the wiring to the sensor is ok. If you have an fcd connected might be a loose contact in its green wire. Check the earths beside the icv aswell..

Edited September 26, 2014 by Duduglanza

[Stu]

Quite often its the idle control assembly under the throttle body - give it a good clean out or even bypass it to see if there is any change

[Chris Green]

I had this issue, I used an ultrasonic tank to clean the ICV and that cured the issue.

[loz180691]

Found the problem yet?