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J_L_Rivera's avatar
J_L_Rivera
Explorer
Apr 29, 2015

07' V10 , 15,000 miles . Too soon to lose a Coilpack ?

Just got back from from 1600 miles round trip, stopped for the last gas and at the bottom of the offramp, it's got a miss in it on Idle in gear and on acceleration from the light.. I didn't feel anything before then. Mostly because I was into a headwind and staying on the gas.
Idles good with a slight miss. Give it gas while in gear and it shudders.

Drove it home another 80 miles. Now noticing loss of power. Some times the miss goes away a few seconds, then comes right back. Same with making the last stops at the lights before home on the streets. Sometimes Idles smooth then right back to missing.

So 2007 Itasca Spirit E450 V10 15,000+ miles. Bad coil packs already?
Class C

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  • Golden_HVAC's avatar
    Golden_HVAC
    Explorer
    Apr 29, 2015
    I don't know if all the coils are directly attached to the spark plugs, or if there is a wire. I had a friend complain that he had some spark plug wires replaced recently, and although all the spark plug cables are only about 3" long, some are 'long' while others are 'short'. Even though all are within 1/4" of each other.

    So what was happening with his car was the spark was not reaching the plug properly. He has coil packs on his car too. So the next mechanic could tell what wires where short, and has spark burn marks on the end of them.

    You can take the RV to a Auto Zone or many other parts stores, and ask to borrow a code reader. Usually they will allow you to borrow it for a few minutes. It should tell you what cylinder is not firing correctly, or what might be wrong with it.

    My 5.4L Ford work van had a leak on the coolant line going to the intake manifold, and that also zapped out one of the coil packs. They did not find it until the second one went out in a week.

    Good luck!

    Fred.

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