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1995 E320 wagon white with 225k+ miles
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Is it possible for spark plug wires and connectors to measure the correct resistance when cold but not when in use? I have an idle 'hiccup' that has gone away temporarily by replacing the plugs and now has gone away again by replacing plugs and wire/connectors. I was hoping the problem was the original wires (I think) on a 165k mile 1995 e320. But I have just measured resistance on the old wires and they all measured the same...2.09 +/- a few hundreths. Is it possible that the old wires were still bad even though resistance appears good when cold and off the car?

Thanks very much,
Jim Lee

1995 E320 Wagon 165k miles.
 
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