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No spark off new coil


rnelson
09-26-2007, 08:57 AM
I am looking at a 1997 Caravan that is not getting any spark delivered to any of the plugs. The coil has been replaced. There is power to the coil, just none out. Someone was driving it and it just died never to start again. Any ideas?

RIP
09-26-2007, 04:43 PM
The PCM supplies power to the coil. Check the wiring and connections between them.

Another thought. The Automatic Shutdown (ASD) relay will cut off power to the coil and the fuel pump in the event the PCM doesn't see either a camshaft or crankshaft sensor signal at startup. The engine will crank all day, just won't start. Have you checked into this yet? Are you seeing the Service Engine (SE) light? Either way, check for fault codes either with a scanner or by the key dance. Which engine?

rnelson
09-27-2007, 03:26 PM
I am getting power to the coil. Nothing is coming out. It is not the PCM or the ASD or I wouldn't get power to the coil. The problem is getting fire off the coil. The engine is a 3.3L.

Stretch58
09-27-2007, 07:19 PM
I am getting power to the coil. Nothing is coming out. It is not the PCM or the ASD or I wouldn't get power to the coil. The problem is getting fire off the coil. The engine is a 3.3L.
The PCM controls the ASD relay that supplies power to the coil. The PCM then grounds the various coil sections at the precise time to light off each cylinder. Could still be the PCM or engine sensors.
The car should have stored a trouble code(s) , find out what it is by doing the keydance. You can search the forum to find out how to do it.

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