When the rpm's get to a certain range several electrical issues occur

2003 JEEP LIBERTY
115,000 MILES • 3.7L • V6 • 2WD • AUTOMATIC
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COMPUTERBLUE
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When the rpm's get to a certain range the headlights get brighter, the A/C blasts harder, the speakers crackle and the dash dials shuts off. In the past, the headlights have blown out from this. The battery and alternator are working properly. Please help. Thank you.
Jun 23, 2019 at 9:28 PM
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SCGRANTURISMO
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Hello,
This sounds like you could have a problem with your vehicle's voltage regulator. The voltage regulator, or for your vehicle Electronic Voltage Regulator (EVR) circuitry is located within your vehicle's Power-train Control Module (PCM) or "computer". Your PCM may be faulty and causing this problem and may need to be replaced. Please get back to us with what you find out.

Thanks,
Alex
2carPros
Jun 24, 2019 at 11:22 AM
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COMPUTERBLUE
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Thank you. I will get back to you with what I find.
Jun 24, 2019 at 2:58 PM
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STRAILER
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Please let us know what you find. We are interested to see what it is.
Jun 27, 2019 at 12:37 PM