No Spark on 2002 Dakota 3.9L - Dodge Durango Forum and Dodge Dakota Forums
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post #1 of Old 03-03-2010, 10:48 PM Thread Starter
CSRT4
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No Spark on 2002 Dakota 3.9L

Hi guys,

I have an 2002 dakota 3.9L auto 2wd. I am getting no spark at the coil. I tested the wires that go to the coil. When you first turn the key it sends 12v to it but then goes right away. It seems that the computer is holding it back from sparking. I heard a lot of people online talking about a wire spice that goes bad but I couldn't find it. Is this truck too new for that spice? The coil, cap and rotor where replaced already. I was thinking about trying a new crank sensor? Any other ideas on what it could be?

Thanks for your help!
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post #2 of Old 03-04-2010, 12:01 AM
99Dakota
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check the ASD relay. could be a number of things. do u have a crank reference voltage when cranking? are u saying there is no spark coming out of the coil, or no power going to the coil?

99 Dakota Sport 4x4 3.9L V6
360 Air Intakez, V8 TB, MSD Coil, Magnaflow Y-Pipe back, Superchips 3715, Factory 3.92's, Firestone Destination A/T's, HID 5000K BI, HID 6000k Fogs, Monroe Sensatrac Rear Loadlevelers
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post #3 of Old 03-04-2010, 04:57 PM Thread Starter
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Quote:
Originally Posted by 99Dakota View Post
check the ASD relay. could be a number of things. do u have a crank reference voltage when cranking? are u saying there is no spark coming out of the coil, or no power going to the coil?
Where is the ADS relay? I tried finding it in the fuse box under the Hood nut I didn't see it I'm there. Is it called something else on the cover?

The coil gives no power to the distributor at all. I tested the voltage on the 2 wires thy go in to the coil and the only time they get power is for the first second you turn the key to the on position but not when cranking it.

Last edited by CSRT4; 03-04-2010 at 05:04 PM.
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post #4 of Old 03-05-2010, 02:54 AM
vortmax
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Asd relay is in the PDC under ther the hood. It may be called the engine relay on the cover. When you turn the key to run ( not start), you should hear it click closed and the fuel pump prime. It should then click open after a few seconds. When you crank it, the relay should click closed again and stay closed. If it clicks back open, then the pcm is shutting it down, usually from a lack of signal from the crank or cam trigger.
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post #5 of Old 03-05-2010, 03:53 PM
99Dakota
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yeah^^ what he said. get out the scanner if u can and watch the voltages for the cam and crank while cranking the engine. will it even crank?

99 Dakota Sport 4x4 3.9L V6
360 Air Intakez, V8 TB, MSD Coil, Magnaflow Y-Pipe back, Superchips 3715, Factory 3.92's, Firestone Destination A/T's, HID 5000K BI, HID 6000k Fogs, Monroe Sensatrac Rear Loadlevelers
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