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Hi:
Last Wednesday my son's 84 900 wouldn't start at college.I told him to check and clean the rotor and cap. He said he found some "black stuff)on the cap points. It started. On Thursday he same problem. I had him replace cap with old one. No start at first but the started second or third time. He headed for home a 3 hr (300 mi) trip. On the way was it stalled again he got it restarted on fifth try. Later on the trip it stalled again he pulled off cap and scraped the reseated. This time it started on second try. About 10 mi from home rpms dropped he feathered it and did not stall. He made it home. Tonight I will replace ignition wires and cap. Here are my questions. Could this "black stuff" be coming from a faulty distributor seal? Or the symptoms are just like my 90 900 exhibited when the crank case sensor was going bad. He leave to go back on Sunday any and all advice would be deeply appreciated.
(Reply from Jim Blake was)
Sounds like a little bit of confusion. Your '90 has it's Hall-effect sensor located under the crank pulley. That sensor does the same job as the Hall-effect sensor that used to be located inside the distributor, as it is in your son's '84 car.
When you get to look at it, a leaking distributor shaft seal would let oil into the distributor. But (maybe?) it sounds like there's a lot of crud (oxide?) built up from arcing at the terminals on the inside of the distributor cap? Seems like an oil leak that's bad enough to get up to the terminals on the cap, would have to make a huge mess inside the distributor first.
Check the plugs, wires, cap, rotor, etc... All the same normal tune-up checks you'd do with your '90. Plus look for loose or burned wires inside the distributor (your '90 distributor is empty). You say you're gonna put on a new cap & wires. Don't forget the rotor.
On Saturday I replaced ignition wires, cap and rotor. I did not see any problems. On Sunday we drove to Easter dinner and car tach dropped way down but did not stall. Later while going 45 mph on a straight road the tach dropped to zero and car stalled out. We pulled over. I tried starting it but to no avail 4 or 5 times. I pulled off distributor cap look and all was fine. I then tried to star it and on third try it fired. Traveled the rest of the way to dinner with out trouble. Later in afternoon my son went out, came back and said it wouldn’t start. An hour and a half he tried and it started. After desert we started home. I took a highway route this time and the car ran like new all the way home ~ 16 miles. At this point I am think perhaps a fuel issue. The fuel filter hasn’t been replaced for about 8 or 9 years and I will replace tomorrow. Does anyone have any other thoughts??
Tim O
posted by 24.194.184...
, Mon, 12 Apr 2004 09:17:39
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