Alternator fault

glenn · Post by **glenn** » Fri Dec 21, 2018 1:06 pm

Would anyone be able to help ? the voltage seems to be okay, but the amps seem to be out of range, does this confirm an alternator fault ?

Do you recommend any further diagnostic tests to confirm

Thanks

Glen

jsjsev · Post by **jsjsev** » Fri Dec 21, 2018 2:41 pm

Hello!

What is the issue with the powersupply of the car?

I guess this car got a variable alt. and with 80A averange isnt bad.

But maybe you got a bad GND somewhere if its difficult to start or other issues with powersupply.
Alot of aluminium, which corrodes on bolt mounts where the GND wires are?

Technician · Post by **Technician** » Sat Dec 22, 2018 8:08 pm

Adjust your scope settings to read AC Coupled, and then run the engine at 2500 rpm and switch on all electrical loads except A/C. Looks for long tails in the waveform or any other abnormalities that might be present!

glenn · Post by **glenn** » Mon Dec 24, 2018 9:22 am

Hi Technician thanks for reply
Ive seen what's happened here I've deleted the wrong trace I did what you've said to do although its better it is still over the amps but I'm going to do it again

cheers for now

Glenn

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