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MJM911SC MJM911SC is offline
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Join Date: Jan 2001
Location: Davis, CA, USA
Posts: 83
944 won't start, no spark from coil

A little introduction - this is my first post to the 944 board. I own a 1983 944 (daily driver) and 1982 911SC (racer). I have owned the 944 for about 6 months and have been able to fix and maintain everything on it based on info from this board found by a search (car had been stored for about 8 years and I did a few things to ensure it was good to go). This is the first time I've needed to post a question, in other words you people are good!

I have a problem with my 944 - currently the car won't start and there is no spark coming from the coil to the distributor (checked by grounded spark plug method). Some other symptoms and results from troubleshooting:

1. The car had been cutting out randomly, but not very often.
2. Tested the relay per SoCal Driver test method - both switches work - click, click
3. Jumpering the relay leads per SoCal Driver test method turns on the fuel pump - I have not checked fuel pressure yet (I will on Sunday)
4. There is 12V at both wires to the coil with the ignition switch turned on.
5. There is 12 V to both injector pins with the ignition switch turned on.
6. All leads at coil and distributor are in good contact.

I have not checked the reference sensor, but I am certain the sensors are placed properly.

Questions:
Anyone diagnose my problem right off the bat?
How do I ensure the coil is good (that is my first guess based on no spark from the coil to the distributor)?
How do I ensure the DME is good?
If DME is bad, what are my options and sources?

Thanks in advance and sorry to bring this up again if I missed this in my search,

Mike M
Davis, CA
Old 02-21-2003, 04:04 PM
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