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tach failure/engine light/no start

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Old 03-31-08, 02:07 AM
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tach failure/engine light/no start

For a while my engine light would come on and i would give it some gas and it would go off. The other day i was cruising at 20mph and the tach cut out and engine light came on. Then the engine started to cut out a bit. I pulled over and turned it off. It had a steady idle but no tach and light was still on. I tried to start it but would barely turn over and then click. I tried to jump it but did nothing. Tried a different battery and the same thing happened.

I read that it could have something to do with the trailing ignition. Is this true?
Old 03-31-08, 12:29 PM
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tach failure is a direct result of a bad trailing coil. no stat could be a bad leading coil as well.
check fuses and pull codes
there is a engine bay fuse and an inerior engine fuse that have to do with spark.
Old 03-31-08, 01:42 PM
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how do you pull the codes?
Old 03-31-08, 05:49 PM
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The ECU is going into a fail safe mode when the tach stops but the engine is still running off the Lead coil assy........imho.

The free online Training manual suggests this. I'd be looking for a failed alternator/charging system.

If the engine has just flat died, and the tach did not move when you tried to Start the engine, THEN I'd have thought about a EGI fuse or Engine fuse having gone south. But your engine did not do that.
Old 04-01-08, 02:36 PM
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i kow this will make me sound dumb but i found the problem. the negative battery cable wasnt grounded at all? sketchy!! thanks guys.
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