Question about 2004 Ford Ranger
2004 XLT 4.0 ext cab with auto tranny. Runs fine except when it snows. The engine starts to miss, or backfire, like an old carb engine. It doesn't do this in any other weather condition. No warning lights have come on and two local Ford dealers are stumped. Any suggestions or ideas would be appreciated!
Have you or the dealers checked the plug wires? Often when there is high humidty weak plug wires can cause the engine to miss and this is difficult to diagnose in a shop environment. Modern ignition systems have very high voltage and also worn plugs can cause the voltage to spike. This would let the weak plug wires lose the voltage and cause the engine to miss.
Posted on Sep 14, 2008
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Posted on Jan 02, 2017
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