Menu toggle

964 C4 (1989)diagnostic warning system

Guest

Guest

New member
Earlier this year the clutch started slipping on my C4. On the way home the warning system came on, ABS and brake warning light. Clutch was replaced by local specialist garage, followed by an ABS relay and an ABS control unit. The problem still persisted. Sometimes all the dash warning lights came on and stayed on or started flashing like a fruit machine. It went back and had a replacement ECU fitted. Got the car back this week and although it drives OK the warning system still comes on every journey and the beeper cannot be silenced unless engine switched off and restarted. HELP!!
 
Campbell,

I have a similar issue (albeit not identical to yours) in that my ABS/PDAS warning (with ! alarm) comes on regularly at irregular intervals (if that makes sense!!). I've been through the loop of replacing ABS relay, wheel speed sensors etc. all to no avail. It was suggested to me recently (via Rennlist) that this problem as well as the famous "Christmas Tree" effect - all the lights on - can be caused by faulty ignition wires. The only real problem is that a new set is around the £220 mark as well as the fitting being a real PITA. I think I'm going to evenutally bite the bullet and get them replaced but it might be something you might like to consider too.

Regards


Dave
 
Cheers Dave.

Last few drives I have stopped and switched off to silence the beeper and reset the lights. The car then would not start (for first time ever). I put this down to a hot start but now wonder if its related to your suggestion about the ignition wires.??
 
Campbell,

This is almost EXACTLY my problem too. Often when I restart to reset the alarm my engine will not tickover - it stalls immediately. Given some gas it will run OK - just not tickover. After driving some while (maybe 20 mins) I find the tickover will return - and the ABS/PDAS alarm won't then re-occur until the car cools down overnight. Weird eh??

Regards

Dave
 
You must log in or register to reply here.

Posts made and opinions expressed are those of the individual forum members

Use of the Forum is subject to the Terms and Conditions

Disclaimer

The opinions expressed on this site are not necessarily those of the Club, who shall have no liability in respect of them or the accuracy of the content. The Club assumes no responsibility for any effects arising from errors or omissions.

Porsche Club Great Britain gives no warranties, guarantees or assurances and makes no representations or recommendations regarding any goods or services advertised on this site. It is the responsibility of visitors to satisfy themselves that goods and/or services supplied by any advertiser are bona fide and in no instance can the Porsche Club Great Britain be held responsible.

When responding to advertisements please ensure that you satisfy yourself of any applicable call charges on numbers not prefixed by usual "landline" STD Codes. Information can be obtained from the operator or the white pages. Before giving out ANY information regarding cars, or any other items for sale, please satisfy yourself that any potential purchaser is bona fide.

Directors of the Board of Porsche Club GB, Club Office Staff, Register Secretaries and Regional Organisers are often requested by Club members to provide information on matters connected with their cars and other matters referred to in the Club Rules. Such information, advice and assistance provided by such persons is given in good faith and is based on the personal experience and knowledge of the individual concerned.

Neither Porsche Club GB, nor any of the aforementioned, shall be under any liability in respect of any such information, advice or assistance given to members. Members are advised to consult qualified specialists for information, advice and assistance on matters connected with their cars at all times.

Porsche
Lockton
Pirelli
Officially approved
Oracle Finance
WEX Esso
Collecting Cars
Archant Dialogue
Back
Top