85 Carrera engine died while driving???
Thread Starter
Rennlist Member
Joined: Aug 2009
Posts: 602
Likes: 62
From: Plano, TX
85 Carrera engine died while driving???
I just got my car back from a major 60k service last week. Car was running like a champ. I was driving today and the car left me stranded. Cruising at 80mph in 5th gear and I notice some loss in power right as I was decelerating for a stop light. When I came to a stop I noticed an erratic idle. Car was revving from 900 RPM to 2000 RPM, back to 900 back to 2000. Did this about six times and died. The car would not start back up. Starter was cranking the engine but it just wouldn't start. My first thought was the DME relay. I had one with me that I bought from Pelican but it still wouldn't start. I noticed the original relay said 15 amp but the new one said 30 amp. If it was a bad relay would the 30 amp work fine in place of a 15 amp? I am guessing it isn't the relay. Any thoughts? 1985 turbo body with 62.4k miles.
Thanks,
Craig
Thanks,
Craig
Pro
Joined: May 2005
Posts: 535
Likes: 0
From: Derwood, MD
Sounds like an injecton system air leak. What did they do for the 60K service? If they replaced any hoses that could be your problem.
At this point DO NOT TAKE IT TO ANYBODY EXCEPT knowledgable Porsche mechanics who know the older cars.
Beware the parts replacers. A series of tests can identify the problem.
At this point DO NOT TAKE IT TO ANYBODY EXCEPT knowledgable Porsche mechanics who know the older cars.
Beware the parts replacers. A series of tests can identify the problem.
Thread Starter
Rennlist Member
Joined: Aug 2009
Posts: 602
Likes: 62
From: Plano, TX
For those who were guessing cylinder head temp. sensor - you were spot on. The connection was actually loose on the left side of the engine. Snapped it back into place and it fired right up. Wish I had known this prior to waiting 90 minutes on the side of the road for a tow. It probably got bumped during the 60K service last week. Thanks everyone.
Craig
Craig
