|
|
|
|
| Author |
|
|
Registered
Join Date: Nov 2006
Posts: 5
|
95 993 intermittent starting problem
I need some help with a very frustrating problem with my 95 993. I bought it two years ago from Barrier Motors, a Porsche dealer. It has 75k miles on it and had always run very well till the last three months. I has developed an intermittent starting and running problem. It has been at a reputable Porsche shop in Seattle for the last month and he has not been able to diagnose the problem.
These are the symptoms. Occasionally it will not start, it cranks over but will not fire. It will occasionally die while driving. When it dies the tach goes to zero and it will start up again. When it will not start, if you let it sit for a while it will eventually start. I called the dealer and was told that the wiring harness recall has been done, they claim it was anyway. The mechanic says that when it will not start it is not getting a spark. He has replaced a relay that as I understand it, is a common problem with this car. He has disconnected an after market alarm system. He has adjusted the sensor on the flywheel. When it does not start there are no fault codes. After it sits for a while and starts some of the warning lights, such as the check engine light stays on for a while. The mechanic is well known and reputable. He and I are frustrated by this naturally. The car had a complete tune up about three thousand miles ago at the shop where it is now which included two new distributor caps and it ran very well for a couple thousand miles. Once when it would not start he swapped out the central computer and it still did not start. I am sure he has checked numerous other things. Does anybody have any advice for me? Thanks, Steve Last edited by kirschs; 11-05-2006 at 01:45 PM.. |
||
11-05-2006, 08:58 AM
|
|
|
Moderator
|
If it is not throwing a code you are certainly challenged.
Hopefully AF Juvat will chime in...
__________________
Don Plumley M235i memories: 87 911, 96 993, 13 Cayenne |
||
|
11-05-2006, 10:34 AM
|
|
|
Registered
Join Date: May 2004
Location: Encinitas (San Diego CA)
Posts: 4,495
|
I wonder if your igniter is going bad? I would think the computer would be able to give a fault code with its diagnostic software, but I don't know that system intermittently.
Doug
__________________
1971 RSR - interpretation |
||
|
11-06-2006, 09:55 AM
|
|
|
Registered
Join Date: Feb 2001
Location: Viera FL
Posts: 5,642
|
See my response, in the other post you made, same subject.
AFJ
__________________
Es geht nicht darum wie schnell man faehrt, sondern wie gut man schnell fahren kann. Ihr Brunnen der nutzlosen Porsche Information |
||
|
11-06-2006, 11:39 AM
|
|
|
Registered
Join Date: May 2004
Location: Encinitas (San Diego CA)
Posts: 4,495
|
ignition control module = igniter to some.
Doug
__________________
1971 RSR - interpretation |
||
|
11-06-2006, 02:22 PM
|
|
|
Registered
Join Date: Apr 2004
Location: Westchester County NY
Posts: 475
|
Flywheel sensor issue perhaps, symptoms may suggest
|
||
|
11-07-2006, 02:23 PM
|
|
|
|
Registered
Join Date: Nov 2006
Posts: 5
|
I just wanted to thank you guys for advice and let you know what the problem turned out to be. It was a corroded connector on a wire to the battery. The fault was covered in shrink wrap insulation so it was not easy to find. It was not one of the main power cables to the battery but a seperate other wire. This is why the car would always crank over. The mechanic was able to reproduce the symptoms when he would move the cable. I picked the car up and it is working fine so far.
Thanks again for the help. Steve |
||
|
11-09-2006, 10:24 AM
|
|
|
Registered
Join Date: Apr 2004
Location: Westchester County NY
Posts: 475
|
Great news Steve, glad you were able to find the problem, Its nice to read about outcomes allways helps in our own diagnostic issues
|
||
|
11-09-2006, 10:38 AM
|
|
1987 Porsche Carrera 3.2 
