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Thread: External Voltage Regulator
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07-13-2011, 08:47 AM #1
External Voltage Regulator
I've just swapped my battery and alternator and am still only putting out 8.8 volts. Do we have external voltage regulators?
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07-13-2011, 10:07 AM #2
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- Jul 2005
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- Jacksonville, FL
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No external regulator - something else is happening. Are you sure the battery and alternator are good? Is SES on for P1637?
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07-13-2011, 10:39 AM #3
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- Jul 2005
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Need to clarify my previous post - P1637 does NOT illuminate the SES light, but is stored in the PCM - so you'll have to scan PCM to see if it's there.
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07-13-2011, 12:45 PM #4
No codes ... but I did find the problem. It was the wire that leads to the alternator connector. It had broken at the connector. I literally coasted into my driveway last night from work as the car died ..... lucky me!
I soldered it up and I'm back on the road.
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07-13-2011, 01:54 PM #5
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- Jul 2005
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- Jacksonville, FL
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- 2,723
The red exciter wire - that'll do it. Still might be a code stored, but it'll go away after several cycles now that it's fixed. Glad you're back on the road.
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