Fast idle speed (2200rpm)

[cjspindler]

I have just changed the oil and filter on my 1995 Williams.

This is the only thing I have changed, and now the car idles at 2200rpm.

Can anyone give any ideas as to why this has happened? I dont believe I have touched anything under the car.

I also, dont believe this can be changed. Does anyone know how to help get the idle speed back to 900rpm?

Cheers.

[MatBrown]

Is there something fouling the throttle body?

[cjspindler]

No, I dont think there is anything fouling the throttle body.

[andyleep]

Idle can be adjusted, but only slightly (by about 400rpm at best!) Was it idling fine before the oil change?

[cjspindler]

Managed to do it by re-setting the TPS.

Now idling at 1000rpm.

Still misfiring though. Out of options now.

[Wobba]

When you took the old oil filter out, did you go in under the ISCV side under the manifold? May have knocked/cut the pipe from ISCV to manifold. An air leak from there will cause this.

How did you 'reset' the TPS?

[cjspindler]

I reset the TPS with a multimeter, setting the values from 0.24V to 4.75 Volts on WOT.