Question about 2003 Dodge Grand Caravan AWD

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2003 Dodge Grand Caravan v6 3.8L is misfiring

We just changed the spark plugs in my Grand Caravan and it popping and misfiring. What could be wrong? The wires were put back in the same place they were before

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  • Dodge Master
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If it was popping before you changed the plugs check the H T leads and if applicable coil packs.

Posted on Mar 21, 2015

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  • Dodge Master
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Friend, caravans, town & countrys, and voyagers of these model year group have a known problem that should have been recalled eons ago by Chrysler. The flywheel is a 3 piece flywheel that is welded together. (It should have been a single piece, forged flywheel, if they had made it to last.) The flywheel is about 18 inches in diameter and has the cog (gear tooth ring), spot welded near the outside edge. It has a center circular piece about 5 inches in diameter that is TIG welded. As the outside turns more slowly than the inside and torque stress in transmitted to the inner circle, the stress shears the welds and caused the inner part to shift about 1/8 of a rotation, throwing your timing off. You can either 1) replace the flywheel or 2) buy a rebuilt transmission.

Posted on Mar 21, 2015

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  • Contributor
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There is a possibility that you have misseated the plugs and or not tightened them all the way down

Posted on Aug 23, 2010

  • lawnREPAIR11 Aug 13, 2011

    my 2003 grandcaravan 3.8l just had this problem. i borrowed a code reader and one of my injectors stopped working. more specifically #3 but i guess it could be any one of them for someone else. code P0203. INJECTOR OPEN CYLINDER 3. code P0303 CYLINDER 3 MISFIRE. i was just commenting to let you know that could be the problem as well. pull your codes.

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SOURCE: 2003 Dodge Grand Caravan v6 3.8L is misfiring

Damaging a plug wire will cause misfiring. If you are getting popping as well, it is almost certain that you have 2 or more wires on the wrong plug.

Posted on Jun 14, 2010

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You'll need to remove,

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if the problem didn,t exist before you done this then you have the firing order off or have damaged one or more of the plugs

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