Alternator AC DELCO or GENERAL MOTORS

I always get AC Delco from RockAuto... never had one bad out of the box... Can't really speak to any other brands.

The alternator itself can get bad only if the bearings are shot. If you don't have play on the shaft, and it spins freely then the alternating part of the alternator is fine. What can get pretty bad are the diode rectifier bridge.

If you have the V6 4.3 it's one of the more dependable motors GM ever made. The factory alt is rated at 105 amps. Should be enough for your needs.

I\u2019ve had an ac delco alternator from rock auto in my Honda Fit for 7 years now.

Put an AC Delco alternator on my Celica because I couldn't get a Denso for it. Wasn't going to buy a store brand reman that'll die in 6 months.

If it was me, I’d go with the ACDelco. Never had any issues with them so far. Checking for the best warranty is something else you might consider, just make sure to read that fine print closely.

On rock auto I see new alternators from ac delco. Not sure about any of those brands.

My mom had a 93 Lumina Euro sedan with the 3.8. The only real serious issue it had was a failed alternator which drained the battery and almost left me stranded one night because the headlights dimmed to the point of being unusable. Other than that, yes the alignment was poor and it had some bad brake wear and warping of the rotors.

Triumph TR7. You're a bunch of amateurs. I'm a British car guy in general but the Wedge was exactly as bad as advertised. When it couldn't keep a battery charged I converted it to a GM alternator, then the radiator fell out. A previous owner had pop-riveted a license plate over a hole in the floor. Keeping the carbs synched is a black art. The seat frame snapped as I went down the road - I later found out that it had been hose-clamped together by a previous owner. It didn't catch fire as many times as my Spitfire has, but at least the Spit is fun to drive. The headlights didn't just pop up out of sync, they popped up and *turned on* on their own.

I've also owned a Hyundai Pony and it was a Toyota Cressida next to the Wedge.

Another good way to tell your alternator is going is the battery light illumination. I noticed as I drove to higher RPM's, used the vents or even used windows with more power gave more illumination of the battery light. Tested the alternator at a shop and found it to be weak, battery was fine.