I have a 1999 mirage 1.5L My alternator went out and I got a new one, actually went throught about 5 new ones to finally find out that I have a bad ecu. So I got a new ecu and alternator but the new alternator is still acting funny and charging between 14.5 and 15. Checked the relays but still have problem. Any suggestions???
2007-10-17 13:29:47 · 7 answers · asked by Daniel M 1 in Cars & Transportation ➔ Maintenance & Repairs
you still have a problem somewhere because that's a little high for it to be charging at,it should be at or around 13.5 volts you may still have got a bad alternator,hey don't feel bad though i went through 4 in one day from a major chain store that sells auto parts,wont mention no names here,but the fifth one was a charm it was good,id try another one,that is a little high for it to be charging at,good luck on it.
2007-10-17 13:41:50 · answer #1 · answered by dodge man 7 · 1⤊ 2⤋
Alright, I'm gonna get thumbed down for this but I don't care. 14.5 volts for your AC generator is fine, its normal, and it won't boil your battery. If the service manual calls for a lower output voltage, then there is a chance you have an issue with the wiring before it reaches the voltage regulator. I seriously doubt that it is the AC generator at fault if you have to keep replacing it.
I think your ECU was fine, and I think your wiring has a problem. Many many problems get misdiagnosed because techs will not pull up Mitchel's, Shop Key, All Data, or something like it and find the procedures and specs for full fielding an alternator to ensure it is charging properly. I suggest you stop doing this stuff yourself and take it to a shop with ASE certified technicians.
2007-10-17 21:36:37 · answer #2 · answered by Anonymous · 0⤊ 3⤋
"Was it New?" Battery is Swollen and bad by now, Replace! Alternator should show no more then 13.6V when running and Test at the Battery. It will Back Feed and cook the New ECU.
2007-10-18 05:05:15 · answer #3 · answered by sidecar0 6 · 0⤊ 1⤋
Voltage regulator in the alternator sounds bad you should take the alternator back, also check your battery.Also dont trust the tests they use for alternators at autoparts stores they arent accurate.The only accurate test is to put it in your car and see if it works.
2007-10-17 21:14:00 · answer #4 · answered by Johnny 4 · 1⤊ 1⤋
If I was you I would get my battery checked if you have a battery that has gone bad it will make you alt over charge NO.2 your car calls for two different alt with 2 different regulators, installing the wrong alt will have you chasing your tail. Any alt, rebuilder can help you on that, they will all so help you with any other problem . It all ways pays to see a good mechanic.try staying with a ase garage
2007-10-17 22:42:38 · answer #5 · answered by gggggg 6 · 1⤊ 2⤋
The alternator is definitely to blame. Take this unit back to your supplier, get a new unit and bench test it before you leave the store to make sure it works properly.
2007-10-17 21:10:54 · answer #6 · answered by largecar8 4 · 1⤊ 1⤋
14.5 - 15 volts back to your battery will boil it dry in no time at all. 13.5-14.0 is a max. Where are ya gettin these alternators?
2007-10-17 20:52:17 · answer #7 · answered by Country Boy 7 · 2⤊ 1⤋