Clivus

Thanks Smurf. Throttle body & MAF eliminated. Looking at coils tomorrow.

Thanks to Jeza and Smurf for your replies. I agree my alternator terminology was wrong. And I don't think that is where the fault lies since the car starts normally and is charging. But the motor idle speed is erratic and the car will not drive properly. So maybe it's the main battery voltage regulator? Anyway, I'm still searching for an experience hybrid electrician who is willing to make house calls. Clivus

Dear Friends I am an ex-pat who owns and maintains a 2008 Hybrid E-Four in Perth Western Australia. Recently, the engine started to falter whilst driving, making the car jerk. This quickly got worse and although the engine will start, the car can no longer be driven. I have eliminated fuel starvation as an issue by replacing the fuel pump and filter. I also cleaned the throttle body. No improvement! No fault codes have shown up on the OBD scan! Some strange electrical faults have appeared with accessories so I have looked at both the main and aux. batteries. The main battery was replaced in 2024 and seems fine. The aux. was down to 11.6v and 13.6v with engine running. So I have replaced it. Now it's 12.6v, but still only 13.6v with the engine running, not 14.6v which I believe it should be. So my question is can the alternator be the root cause of this puzzle? Your opinions are welcome, because owners of imported Toyotas seem to be very unpopular in Perth and all I can do is read a multimeter. Clivus