Overvoltage when throttle

[JFP in PA]

Originally Posted by Lacostas

Bosch Voltage Regulator is brand new. Any chance this is being caused by the alternator somehow ? Or by a bad ground somewhere ? Im running out of options

The regulator controls what the out put voltage of the alternator is, I seriously doubt it is the alternator, but you can have it tested by any decent alternator shop.

[Lacostas]

Originally Posted by JFP in PA

The regulator controls what the out put voltage of the alternator is, I seriously doubt it is the alternator, but you can have it tested by any decent alternator shop.

true.. What's the next thing to check ? Maybe the Regulator cant "see" the correct voltage of the system due to a bad ground ?

1. Bad starter ground, even though car starts perfectly fine
2. Bad alternator mounting ground (where it bolts) ?
3. Other ECU/electronics ground im missing ?

Any other electrical side worth to check ?

[JFP in PA]

Originally Posted by Lacostas

true.. What's the next thing to check ? Maybe the Regulator cant "see" the correct voltage of the system due to a bad ground ?

1. Bad starter ground, even though car starts perfectly fine
2. Bad alternator mounting ground (where it bolts) ?
3. Other ECU/electronics ground im missing ?

Any other electrical side worth to check ?

If you suspect that you have grounding issues, run voltage drop tests across all the grounds.