In article <if7Od.49951$bu.42467@fed1read06>,
Erik > wrote:
> 93 325i, when cold, no knocking and pinging. when warm, knocks and
> pings. cyl head temp sensor? any thoughts?

These temperature sensors tend to work or not. And when they fail, give a
*very* rich mixture with the engine hot - so much so that it might not run.

But you can check them with a DVM.

I'd say the obvious one was the knock sensor.

--
*If you must choose between two evils, pick the one you've never tried before

Dave Plowman London SW
To e-mail, change noise into sound.