[Clint]

Had a good look through all the previous threads on this fault and no luck.
Engine revs from tick over to 3000rpm every other second checked the Icv and checked for air leaks with no sucess. The engine management light comes on with the fault codes for the Icv and engine crank speed sensor.
Need some help please

 

[daddy cav]

What engine is it ?

 

[Clint]

C20 Let

 

[cheddars]

stupid question but any tappet noise had simular problem cahnged the tappet and the idle was a lot better but was also told that the same sensor was faulty and the car does idle funny but not a abd as bufore got taps and senor from autovaux haven't had a chance to change the sensor yet