Year of Manufacture *: 2000
Engine Size and Code *: 2.0 BMW Diesel Unit
( Optional ) ECU Type: Bosch
( Optional ) Scanner Used: Snapon
( Optional) Fault Codes: None
I have a Rover 75 CDT in the shop fitted with the BMW 2.0 Turbo Diesel engine. It has done about 130,000 miles and the customer complained of the Alternator warning lamp coming on intermittently when driving home from work. We had some other work to do on the car so before we did it, I took it on road test with everything switched on and the scanner connected to it. During the road test, the problem did not manifest itself (as usual!!) and we carried out the other repairs. We removed the alternator which was a Valeo unit, and on checking inside found the brushes well worn and the slip rings both well worn down, so with the belief that these could be sticking and making a poor contact an exchange alternator was ordered and fitted. When the car was restarted everything was fine, however on restarting the engine a second time, the alternator warning light was lit dimly, although with everything switched on it is still charging to 14.1 volts. I suspect there is still a problem somewhere, however I thought it worth a post to see if anyone has had this problem before on either the Rover 75 (or BMW 3 series fitted with the same engine) having fitted an exchange alternator unit? I have carried out voltage checks on both the positive and earth sides of the circuit back to the battery, and the volt drop in both cases is only 0.03volts!!By the way, there are no fault codes stored in the engine ECU!! Any ideas would be most welcome.
Thanks in advance Roger