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drl911's Avatar
 
Join Date: Aug 2004
Location: N.E. Georgia
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DME Relay acting up....

Over the last few weeks the '86 Carrera has refused to start on 3 occassions, but then finally does start after a few minutes of trying. Tonight it refused to start at all, fortunately it was in the home garage. The fuel pump fuse was good, but I was not getting 12v at the fuel pump. Then I discovered I was not getting 12v to the input side of the fuse at the fuse panel. I removed the DME relay and smacked it around in my hand a few times, re-installed it and the car started right up. I suppose "no brainer", but does the relay gradually fail like this? Either way I am getting a new one tomorrow!

Thanks,
Dan

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Old 06-27-2011, 05:57 PM
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I had a problem that the pump would stop on a bump and got so it would not work at all. I opened the back of the connector for the relay and found the small black wire wasnt making good contact with the relay and was loose. I could fool with it when it was running but the small black wire needed to becompressed slightly so the contact would stay good.
Bruce
Old 06-27-2011, 06:05 PM
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Yeap, the solder joints are probably cracked in the relay.

I would get two relay, one on stand by just incase you are out on the road.
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Old 06-27-2011, 06:20 PM
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wut draco said, as having a spare DME relay is generally considered standard practice.
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Old 06-27-2011, 06:36 PM
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Old 06-27-2011, 08:37 PM
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In addition to repairing cracked or broken solder joints I suggest to clean the pair of contacts within the DME. You never know if dirty contacts could contribute to the problem.

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Old 06-28-2011, 02:19 AM
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