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4.0L OHV & SOHC V6 Tech General discussion of 4.0L OHV and SOHC V6 Ford Ranger engines.

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Old 04-07-2010
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Need help

I have a ''93 Ranger w/4.0. When driving home the other night, the check engine light came on and the engine lost a lot of power and seemed to be running on just a couple cylinders. I changed the plugs and the next morning it ran fine for 3-4 miles and did the same thing. Could this be a problem with the coil pack? Any input would be appreciated.
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Old 04-07-2010
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how did the old plugs look when they came out? and did you change the wires with the plugs?
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Old 04-07-2010
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I did not change the wires. 1 plug had some oil on it, the others were tan looking
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Old 04-08-2010
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thats normal except for the oil change the wires and if it continues then maybe change the coil pack they rarely go bad but anything can break really.
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