Ongoing stalling problems on 1990 964 C4

[GaryCollinson]

Hi

Can anybody offer some advice on trying to trace the cause of an ongoing stalling problem I've been having for six months..

Usually it takes between 4 and 10 key turns to start. On the occasions where the car starts first time, after a couple of minutes of driving it cuts out completely. Pulling over and restarting usually sorts this out and the car is fine for the rest of the journey.

The non factory immobiliser has been ruled out and the following have been replaced:

DME Relay
Flywheel Speed Sensor
Alternator
Fuel Filter
Idle Valve

The car has been in and out of the garage a number of times and Im concerned I might never get to the bottom of the problem.

If anybody has any suggestions or advice, Id be very grateful.

Cheers
GaryC

[r5gttgaz]

Hall sensor in distributor No.1?

[r5gttgaz]

Dodgy ignition barrel?

[GaryCollinson]

Thanks Garry. If it was the Hall sensor wouldnt the car fail to start altogether?

GaryC

[r5gttgaz]

GaryCollinson said:

Thanks Garry. If it was the Hall sensor wouldnt the car fail to start altogether?

GaryC

Depends I suppose on the way it has failed / failing.

Ignition barrel might be a possibility.

[mr pg]

Dodgy knock sensors can lead to stalling problems too.

[wildoliver]

Maf?

[lanesra10]

Who is your inde? as there maybe someone else locally. Otherwise a good way of checking is to get a donor car and swop parts over which is what your inde should do!

Have you/they placed it on the Bosch hammer as this would show up the std problems ie hall sensor, MAF etc. Have you checked your distributor caps and rotors because of the starting issue.