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Chris
Chris, Technician
Category: Chrysler
Satisfied Customers: 13351
Experience:  30 years certified Chrysler technician, smog license Certified Master Technician
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Traveling - Stuck 2600 miles from home. 2007 PT Cruiser:

Customer Question

Hi Chris,
Traveling - Stuck 2600 miles from home.
2007 PT Cruiser: Battery light sometimes comes on, sometimes not. Restart car, perhaps OK. If OK, turn on headlights, battery light usually comes back on.
Verified that charging voltage is OK when battery light on and there is no charging voltage when battery light is off.
Replaced alternator and battery (both where fine - $600 waisted).
Thoughts? Wiring harness? Fuse link? Ground? Computer? Loose wire?
Thanks in advance!
Submitted: 1 year ago.
Category: Chrysler
Expert:  Chris replied 1 year ago.

Hello and welcome to just answer. I have seen this before and it is almost always a failing positive and/or negative battery cable. The cables develop corossion and or

loose connections at the crimp between the cable clamp and the wires in the cable. The fix is to replace the cables, however you may be able to buy some after market universal cable clamps and cut the factory clamps off and install the after market ones. Then when you get home you can replace the factory cable harness. This should get you back home.

Chris

Expert:  Chris replied 1 year ago.

The only other thing it may be is an internal problem with the PCM (engine computer). The PCM has the charging system voltage regulator built into it and sometimes they act up.

Chris