aj1954

Well-Known Member

• Dec 17, 2019

• #21

When I had my P38 4.6, I got an aftermarket one 150A for £120 no exchange from Island, output was down to 13.8v on the original Bosch one
I still have it in the shed, was going to get a kit to repair it but never got round to it.

 

RangeRoller dt

Well-Sprung Member

• Dec 17, 2019

• #22

If you take the belt off you can feel for any wear in the alternator bearings. Should be smooth no side to side movement.

 

Grrrrrr

Technician, Bodgit & Scarper Ltd

• Dec 17, 2019

• #23

aj1954 said:

When I had my P38 4.6, I got an aftermarket one 150A for £120 no exchange from Island, output was down to 13.8v on the original Bosch one
I still have it in the shed, was going to get a kit to repair it but never got round to it.

Click to expand...

13.8V sounds right for an early one or diesel. Doesn't mean a diode hasn't gone though.

 

Datatek

Well-Known Member

• Dec 18, 2019

• #24

Grrrrrr said:

13.8V sounds right for an early one or diesel. Doesn't mean a diode hasn't gone though.

Click to expand...

As Above, 13.8 volts is normal for all diesels and most V8s. A faulty diode pack will cause erratic output but will not usually light the battery warning light.