XJR X308; Low idle


Same client as with the door module. He also has a problem with LOW IDLE from cold, which is a problem for him because from his house there is a rather long hill to drive down, so he has to use the brake, resulting in the engine stalling.

The idle from cold is approx 1000rpm and when hot it is about 500rpm, which are both low figures.

I’m thinking cam or crankshaft position sensors but, the latter has been replaced earlier.

Any wisdom, gentlemen?

Kind regards,
Bard Thomas

ecu may need a reflash to increase the idle if its an early car

Hi Andy,

And how do you suggest I go about that? Are you talking about detaching the battery cables and holding them together?