brucemillar
MB Enthusiast
- Joined
- Nov 18, 2010
- Messages
- 8,663
- Car
- C55 AMG Wagon - W124 300te 4matic Wagon - BMW 4.8is X5 E53 - SWB Pajero 3.5 V6 24v
Hi
My father outlaw's A170 has developed a weird fault.
The multi belt snapped requiring a new belt and pulley (fitted by a local indie)
Since then the battery keeps going flat. If the car does not start on the first turn (battery reading 12.8 vdc)it does not have enough juice in the battery to start it on the second attempt (starter just clicks) battery then reads 7.5 vdc.
1) He bought a new battery from Halfords (same problem).
2) Took the car to Halfords thinking the battery was knackered (it was a new battery). They tested the battery and say there is nothing wrong with it, They tested the battery and the alternator. The alternator test reads "ripple to big". So they say he needs a new alternator?
However... If the car does start the alternator is putting out 14.8 at the battery.
Do you think that the original belt fault and the "alternator fault" could be linked? Or is it a case of fitting a new alternator.
Belt tension etc is all fine. But he cannot use the car as there is no guessing if it will start each time he goes out in it.
My father outlaw's A170 has developed a weird fault.
The multi belt snapped requiring a new belt and pulley (fitted by a local indie)
Since then the battery keeps going flat. If the car does not start on the first turn (battery reading 12.8 vdc)it does not have enough juice in the battery to start it on the second attempt (starter just clicks) battery then reads 7.5 vdc.
1) He bought a new battery from Halfords (same problem).
2) Took the car to Halfords thinking the battery was knackered (it was a new battery). They tested the battery and say there is nothing wrong with it, They tested the battery and the alternator. The alternator test reads "ripple to big". So they say he needs a new alternator?
However... If the car does start the alternator is putting out 14.8 at the battery.
Do you think that the original belt fault and the "alternator fault" could be linked? Or is it a case of fitting a new alternator.
Belt tension etc is all fine. But he cannot use the car as there is no guessing if it will start each time he goes out in it.