Question about Volvo 850

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91 240 Volvo

I have a 91 240 Volvo i have had to change the Alternator 4 times the car will go fine untill i have to use the headlight or wipers Then something kills it and i have to change the alternator again Can someone help me with this

Thanks
Charles

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  • Charles Stellete Aug 31, 2008

    I have checked all the wiring and they are all good none are cracked or crimped in any place no break in the wire any where. Is there anything i am not checking that will not let the battery charge

  • Xaphan Mar 15, 2009

    My 88' 240GL volvo has had the same problem, Ive swapped the alternator 3 times, A brand new battery, Ive completely cut off all old electrical connections to rule out corroded connections (including both terminals). Ive cleaned all grounds to the block and to the frame, the belt to the alternator is tight (but not too tight), when disconnecting the battery while the car is running, It continues to run. I invested in a 20$ voltometer that plugs into my cigarett lighter so I could monitor the voltage (just because ive been stranded too many times). the voltage has only gone up to 14.1 once, ever. Its standard running voltage would be around 13.7. But after driving a bit (with no radio, no windows power, no headlights, nothing plugged in [except for the voltage regulator]) the voltage will decrease down to about 12.3 then to 11.7 10.9 9.3 8.4 etc. Once it reaches 5.whatever, the car stalls after some fun backfiring. I charge it on a trickle charger for a bit, I check the water/acid in the battery. And it starts up like nothing happened. But it doesnt take long for the problem to happen again. Im lost. Ive traced wires to the starter, back to the battery, I cant seem to find one small red wire that runs from the back of the alternator, it disapears in the harness which runs into the dash. ive cleaned and protected every connection I can find. Help?

  • Anonymous Mar 15, 2014

    alternator

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Probally a crassed wire, I would check the wireing.

Posted on Aug 31, 2008

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