Audi 80 TDi Will restart after warm up?

[John R. O'Neon]

Hi to all. My Audi starts first time when cold but after running a few miles and stopping, it takes 6 or 7 cranks of the engine before it will fire and run. I get home, leave it, and with a cold engine it starts! I've been told it could be a sensor? Does anybody know where I would find it? Or, perhaps another reason why it happens...? Luckily my battery is standing up to the workload.
Thanks to all you knowledgeable people in advance.

PS. Title should read will NOT start when hot!

[kenney]

I think you should start by checking the basic setting of the injection pump,before replacing unnecessary parts

[hercimer01]

My Audi 80 2.5L would start hard cold, run ok, kind of when warm, then eventually stopped running when warm, It would stall within a minute at idle. To test the oxygen sensor (or lamda probe), I disconnected it. The car ran fine. I removed and replaced probe now it runs fine.

[hercimer01]

Dont drive the car for long with the O2 probe disconnected.

[John R. O'Neon]

Thanks Hecimer01. I will give that a try.

[kenney]

John R. If you can find the lambda probe on your engine, let me know,where it is

[hercimer01]

Its on the exhaust pipe before the catalytic converter. The connectors are on the right, top, center side of the of the the motor. http://www.autozone.com/autozone/cat...&parentId=61-0

[kenney]

Audi 80 TDI is not the same engine as a Audi 80 2,3l