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E36 General discussion and technical help for (E36) 1992-1999 3 series cars. 318, 323, 325, 328.

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Unread 01-21-2013, 10:48 PM   #1

Name: mackmaggiesam
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Your Ride: 1994 e36
Angry voltage problem

i have a 1994 325i runs great until you turn blower motor on high or rear defrost on then it will start to bog down and red engine light comes on i checked to see if there was 5 volt going to sensor i got it check alter getting 13.2 does anybody know what this is it is also blowed ac relay and fuse but compressor is good please help driving me crazy:
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Unread 01-22-2013, 10:28 AM   #2
Big Evil
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Name: Big Evil
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Your Ride: 1994 BMW 525i, 1987 325is, 1986 325
Check grounds in the system, 13.2 seems a bit low but not out of range for normal, do you have an amp clamp to check the alternator amp output? (Voltage may be ok but not enough amps)
Big Evil, The BMW driving monster of the American Southwest (Currently on BMW #5)
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Unread 03-31-2013, 04:17 PM   #3
David Mc
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Name: David Mc
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Your Ride: 1998 e36 328i
+1 Sounds like the alternator output is at rock bottom.
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