Question about 2001 Ford Expedition

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Slight power surges

I have a 2001 ford expidition. We love this truck but we have one small problem. When its really cold out and we are running front and back heaters ther is slight power surges. for example when all the heats are on the headlights and dash lights flicker slightly right in sinq with the motor running. once i shut the heats or air off the rpms pick up slightly back to normal and the lights remain steady. Does it seem like i have a underpowered battery or alternator.?

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You might want to chk. your battery connections make sure there clean and tight, and any other ground straps you can find, you also might want to have your altinator chk. too. Have you notice any winning noise comming from altinator when you run alot of electrial, it could have a diod in alt. going bad or the regulator in alt. sticking or going bad or bearing going bad. chk. all bat. connections if it still does it after you do that have alt. checked.

Posted on Feb 04, 2009

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