How does a distributor rotor fail? - Saab 9000 Bulletin Board - Saabnet.com
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How does a distributor rotor fail?
Posted by peter charak [Email] (more from peter charak) on Wed, 3 Nov 2010 19:44:35
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This is a 1987 9000T.
Driving home yesterday in our very hilly area, had some missing under load in all gears. On a long, steep uphill (sea level to ~ 1000') missing became worse. Pulled off road and looked. Found nothing. Restarted up the hill. While in second gear and missing, engine stopped, and would not restart.
Couldn't find a problem, and assumed fuel pump feed pump gone (I could hear main pump on start attempts). Had car towed home.
Today after work, used timing light to check for spark, and found none.
So, not the fuel pump. A test spark plug at end of ignition coil HT wire fired well. No spark at end of plug wires. Removed distributor cap, rotor turns OK.
Removed distributor, replaced with a spare one. Everything now runs. Retimed it. My conclusion? Rotor failure. Any other conjectures?
Now I'm curious – how does something as simple as a distributor rotor fail? What type of resistor is in the rotor? (I've never before had a rotor failure since I started driving Saabs in 1976).
posted by 207.216....
Posts in this Thread:
- How does a distributor rotor fail?, peter charak, Wed, 3 Nov 2010 19:44:35 <-- Viewing This Message
- Re: How does a distributor rotor fail?, SWEDECAR , Thu, 4 Nov 2010 13:57:53
- Re: How does a distributor rotor fail?, peter charak, Wed, 3 Nov 2010 22:07:34
- rarely, derf, Thu, 4 Nov 2010 10:00:38
- Re: How does a distributor rotor fail?, DickT , Wed, 3 Nov 2010 19:58:18
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