running problem

2003 FORD TAURUS
55,000 MILES • 6 CYL • 2WD • AUTOMATIC
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WM WATERS
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03 ford taurus 3.0 2valve. missfireing under load only when warmed up; recent full service 55,000 mi/no eng code
Dec 11, 2010 at 6:08 PM
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FIXITMR
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did it do it before the full service? what IS full service?
Dec 19, 2010 at 12:55 PM
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MHPAUTOS
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Often this is a faulty ignition lead, with the engine under load the spark must bridge the electrode under an enormous pressure, if the lead is faulty and voltage can leak out it will under such conditions, voltage will always seek the path of less resistance, i would start with replacing the leads.

mark (mhpautos)
Dec 26, 2010 at 11:31 PM
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FIXITMR
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by leads do you mean spark plug wires?
Dec 27, 2010 at 7:08 PM
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MHPAUTOS
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Yes, high tension leads, that is what they are called here in Aust.

mark (mhpautos)
Dec 27, 2010 at 10:52 PM