Having problems with your 1999 Pontiac Sunfire ?
99 pontiac sunfire clicks when trying to start, stalls when idling, lights brighten when stepping on the gas. will only start if boosted. bought a new starter not sure what the problem is???
Sure sounds like the voltage regulator in the alternator is bad i would take the alternator off and have it tested also have the battery tested.
Sounds like the alternator is on its way out. It should have roughly the same voltage output all the time.
Repair Help & Product Troubleshooting for 1999 Pontiac Sunfire
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