I HAVE NO SPARK FROM THE COIL WHAT COULD IT BE?

2004 Dodge Caravan

Tiny

Derek bogar

January, 5, 2013 AT 5:49 PM

I have no spark from the coil, what could it be?

FOUND 2774 RELATED QUESTIONS

13 Answers

Tiny

JDL

January, 5, 2013 AT 5:56 PM

Did you check primary voltage to coil?

Tiny

Derek bogar

January, 5, 2013 AT 5:58 PM

Yes, it has voltage to the coil but none coming out of the coil.

Tiny

JDL

January, 5, 2013 AT 6:13 PM

Primary voltage is the brown wire with white tracer, at the coil. Voltage comes from asd relay. Computer won't ground asd relay unless it sees the cam and crank signals. There could other issues. Can you check for applicable treouble codes? To check codes, yourself, at the least you need an obd2 code reader. The national brand autostores should have code readers. Or spring for a scanner that will not only read codes but will also show live engine data. They do call some code readers, scanners, but they won't show live engine data.

Tiny

JDL

January, 5, 2013 AT 6:14 PM

What is engine litre size?

Tiny

Derek bogar

January, 5, 2013 AT 6:17 PM

3.8

Tiny

JDL

January, 5, 2013 AT 6:19 PM

Do you have primary voltage at terminal 2, Note diagram, with engine cranking. Get a helper to crank it.

Tiny

Derek bogar

January, 5, 2013 AT 6:22 PM

Yes.

Tiny

JDL

January, 5, 2013 AT 6:23 PM

I looked at 3.3L first, then the 3.8l. The coil wiring appears to be the same.

Tiny

JDL

January, 5, 2013 AT 6:28 PM

Terminal 2 in the diagram is primary voltage. Terminals 1--4--3 are grounds, controlled by the pcm. One ground for each coil, each coil fires two spark plugs. If you use an led testlite between terminal 2 and any one of the grounds, engine cranking, is there a pulse?

Tiny

JDL

January, 5, 2013 AT 6:29 PM

I got some errands to run, talk to you later.

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