Question about 1999 Mitsubishi Montero Sport

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I keep blowing alternators

I am able to drive cuple weeks and then it will burn out i have in stalled alarm and fog lights but i have all ready disconncted them and still keeps burning out i have had moble 1 sound put new sperckers in and i had a tune up done i still have factory radio i can understand what the problem i have gone throw 3 already i acn find the problem pls help

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I have read about, and experienced, a problem w/alt's on '99 Mon Sports where owners have replaced multiple alternators. Many times the culprit, oddly enough, is a leaking rear camshaft seal that weeps oil. This oil subsequently gets blown around the engine compartment by the radiator fan or general air movemants while driving. Because of this, a film of oil can cover/coat the alternator (specifically the underside, which often goes un-noticed), causing its failure. It is my opinion (just an opinion) that this could be the cause of some of the passenrer side fires that I have read about occuring. The seal is only about a $15 Dollar part, but to replace it is several hundred in labor due to it's location. Have you ever noticed a faint, or sometimes even a strong smell of burning oil when you park your Monty? If so check to see if indeed you have an oily residue on your alternator. The smell of burning oil tipped me off to this issue. Upon investigating the smell, which turned out to be a small amount getting blown on to the exhaust, that I found my alternators underside to be coated with oil. I do plan on replacing the seal soon, but until I can find the time, every month or so, I use an engine degreaser and clean my motor thouroughly paying special attention to the underside of the alternator. Hope this helps you. Dave B. in PA

Posted on Nov 25, 2008


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