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#1
08-23-2008, 03:43 PM
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Electrical help needed
Help. I am a pretty good home mechanic but my electrical diagnosing skills are non-existent beyond basics so i post hoping those of you with sharp minds and more experience than myself can help. My 300D seems to be having some electrical breakdown which is manifesting in more than one area. The low beams work intermitently, high beams and fogs are fine. Changed fuses and the fuse box appears to be in good condition. Replaced headlight bulbs(Hellas). Alternator light flickers on a couple of times the first time the car is driven for the day, then it does not come on during subsequent drives that day, but does it again the next morning. The wiring to the climate control blower motor gets hot if i run it higher then the first position. I don't know if any of them are related. Car is driven regularly and mechanically quite sound. I am thinking maybe (or maybe not) problem originated a while back. I had to replace the voltage regulator in the alternator because the diode on the old one was physically broken. Please offer up ideas or thoughts you may have regarding this problem which do not require a crusher. Thanks!!
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#2
08-24-2008, 03:38 PM
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Well I will say a couple of things (I waited a day for the experts to chime in and ....)
First of all I don't have that car so I can't give you specific guidance. And I don't even have a schematic for it. Second, it has been my observation that teaching electronics over the internet is very difficult to impossible. So here are a couple of ideas until the experts gets here: You might get more responses in the diesel section even though your trouble is electrical. There just might be more people with that car over there. You need specific guidance not general information. It seems to me that those problems are not related. Your work on the alternator MIGHT have something to do with the alternator problem but maybe not. On the lights, I would guess a bad switch or relay (if there is a relay). On the heater fan wire??? How did you even notice that? Is it hot the whole length of the wire? How hot is hot?
__________________
1998 C230 330,000 miles (currently dead of second failed EIS, yours will fail too, turning you into the dealer's personal human cash machine) 1988 F150 144,000 miles (leaks all the colors of the rainbow) Previous stars: 1981 Brava 210,000 miles, 1978 128 150,000 miles, 1977 B200 Van 175,000 miles, 1972 Vega (great, if rusty, car), 1972 Celica, 1986.5 Supra
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