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2004 Ford Thunderbird

 

Question: Engine miss/skip when warm and driving.

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rrmaltby, Farmington, MI, February 23, 2011, 17:03
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As I am driving I get a definite "miss" in the engine. Like someone shuts off an electrical switch and turns it back on. Very intermittent but more prevelant when driving long distance. Dealer replaced air filter, throttle body and problem still exists. Only 25K miles.

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  • Answer #1

    patrick mannion from Greg Solow's Engine Room, February 23, 2011, 17:09
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    It is hard to give the exact cause without being able to experience the problem first hand and do some basic diagnostic tests. Ford are "bad" at setting misfire codes. You engine has one ignition coil per cylinder, I have seen the ignition coil fail intermittently and not set a code. You could first try replacing the spark plugs. With a professional grade scan tool you can view what is Mode 6 information and figure out which cylinder has a misfire.

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    rrmaltby, February 28, 2011, 14:09
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    I have the "flight recorder" on the engine now from the dealer and will see if the problem can be detected that way. I will also show him your response to see if this is something they may try. Thanks.

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  • Answer #2

    Brian Glastetter February 23, 2011, 20:11
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    Patrick is correct. Mode 6 will typically give us the information needed to diagnose it correctly. They is an customer satifaction program in which Ford will replace failed ignition coils. Give me your vin# and I will see if you have coverage. bglastetter1@aol.com

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    rrmaltby, February 28, 2011, 14:10
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    Thanks. I will check with Ford and see what they know about the customer satisfaction program.

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  • Answer #3

    RickyD526 January 25, 2012, 20:20
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    I had a similar issue with my '04 Tbird. Sometimes came up with a misfire code, but mostly not. When a tune-up didnt fix it, and after much frustraion, it turns out there is a service bulletin on the ignition coils, something about leaky gaskets allowing moisture in to fail the coils. Dealer should replaceme up to 10yrs/100k miles (from what I remember).
    Search the net for Bulletin No: CSP 07M07

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