djs789
Registered: 07/20/10
Posts: 3
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| | 07/20/10 at 11:23 AM | | #1 |
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I have a 2006 Chrysler Town and Country 3.3l. The check engine light is on and I am getting P2308 error code. The Parts store print out says this is an erratic signal from the ignition coil secondary circuit.
The probable causes are:
1.Faulty spark plug or coil boot or 2.Failed ignition coil.
The van is running rough, Has a rough idle, Hesitation, Sputtering, Excessive engine vibration.
I replaced the spark plug wires a month ago. I replaced the coil and the spark plugs today.
The van is still running rough any suggestions?
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djs789
Registered: 07/20/10
Posts: 3
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| | 07/21/10 at 01:16 PM | | #2 |
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Update:
I checked for arcing at night. No arcing. I rechecked and set gaps on the new plugs I put in.
The p2308 code is an error in the ignition coil #3. Coil #3 fires cylinders 2 and 5.
Erased the code. Then I flopped sprk plug wires from another cylinder for the number 2 wire. I get the same p2308 code come. I did the same with the 5 cylinder wire with the same results. So I am pretty sure its not the wires, plugs, and coil (which is new).
I checked with a TEST LIGHT the control wires for all three of the coils with the engine running.
Pin #1 (brown/orange wire) control wire for coil #3 LIGHT GLOWS CONSTANT. I think this is wrong.
Pin #4 (dark blue/tan wire) control wire for coil #2 LIGHT FLASHES - I think this is normal.
Pin #3 (dark blue/dark green wire) control wire for coil #1 LIGHT FLASHES - I think this is normal.
Since the control wire glows the wire must not be bad or grounded. I think the pcm must be bad. Probably a good bet the computer is bad and should be replaced?
I don't know. Is there anything else I should check? The pcm is expensive. What do you think?
Any suggestions on replacing the computer if you think I should?
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djs789
Registered: 07/20/10
Posts: 3
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| | 07/28/10 at 10:48 AM | | #3 |
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Update:
I traced a bad coil driver signal going into the coil all the way back to back to the pcm for coil#3. I determined the pcm had a bad coil driver for the #3 coil. I ordered the remanned computer from Auto Computer Exchange in FL.
I installed the new computer. It seems to work. The computer has a lifetime warranty so I think I am golden. Thanks for your help.
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