Hi guys

Hope you can help me diagnose some recent problems with my Octavia.

A few weeks ago the car wouldn't start. I wasn't able to diagnose the problem and ended up having a shop change the distributor cap to fix the problem.

After this the car has been having problems idling. The symptoms are as follows:

The car starts perfectly (well, actually sometimes it makes a weird noise as if the starter doesn't engange when turning the key, but I suppose this is a completely different problem). When running in cold condition the choker is a bit slow to "turn off" and the engine will run with too many rpms (if not engaged) for a few 100 meters. Idle is then almost ok.

As the engine gets warmer, idling becomes a problem. The rpm-needle will be "pulsating" between 600-1000rpm. Sometimes it will stall completely and stop. When I approach a red light, I can help it by deaccelerating with the engine engaged to make sure that the rpm's are close to 1000 when I disengage and let the engine idle. I will also be able to prevent the engine from stalling by stepping on the gas pedal when about to do so...

I hope you can help

Morten

And BTW. I had a spare fuel injection unit laying around and swopping them didn't change a thing..

Coolant temp sensor fault is my guess.