Charging at W.O.T., Missing at high RPM Won't shif

[hittman]

I am having a problem with my Z28, When I'm at about quarter throttle, The car drives fine, shifts fine. When I step on the gas from any speed, my charge gauge goes from thirteen down to almost zero, and the engine bogs, and the transmission won't shift out of whatever gear I am in..... Alternator??? Massive short?? anyone else run into a problem like this??? Help please....

[blue02Z]

sounds like the alternator, go get it tested. if your trans doesnt get the proper voltage then it wont shift or work worth a damn

[hittman]

Yeah, thanks, i never even thought of getting it tested... I tested it for voltage, but couldn't test it under a load.... They can do that a parts shop though right?

[Y2KArcticSS]

Definately alternator, I just mine a couple weekends ago... my voltage didn't drop as bad as yours under load, but I drive an M6, so no electronic shifting.

[Dr.Crash]

YUp mine did the same. just take it to your local auto parts store and they should be able to test it.

[hittman]

Sweet, Thanks for all your help, Never had an alternator do that to me, i will let you know the out come...

[CamaroFan71]

Mine charges fine, but if I rev it to like 4-5k then it will drop down a bit. Alternator is a couple of months old from GM so Im thinking a new belt or tensioner is in order.

[hittman]

I think i found the problem.... I was getting ready to take out the alternator, when i found some wires pinched between the alternator and the cooling lines, I removed them and wow! what difference, My car still discharges at w.o.t. , but not to zero like it was, now it's at about eight, I'm thinking the voltage regulator is shot from shorting for so long.... I will just replace the alternator this weekend.... Thanks again for your help.... I love this site: luvlove: