BMW 2006 325i AC compressor + serpentine belt repair time mechanic

SOURCE: My 2000 BMW 328i was off the road for 3 years

I cant make any assumptions about the repairs your mechanic is attempting
to your vehicle.It does sound a bit odd and the price of the instrument cluster does seem costly.We service BMW's at my shop and your issues sounds out of the ordinary,I would suggest you get a second opinion.If you were in north carolina we would diagnose it for free.

SOURCE: Hi, I am trying

If you have the 4.4L V8 make sure you have the Alternator belt out of the way and pull off the engine slash shield. Then look for a tensioner just in front of the oil pan. It should be in between the crank pulley and the compressor pulley. You will need a Torx socket to get in there to relieve tension. There is also a special tool (small nail) used to lock the tensioner in place while you remove and install the belt. I'm not sure that all have the tensioner but I know the couple I've done had the tensioner. Don't see many of those in my area.

SOURCE: How do you replace the

Hi navygurlrosi,

On the early 745i's BMW thought it would be a great idea not to have a tensioner for the a/c compressor. You have to first remove the alternator belt, which has a tensioner and requires a T55 torx to release the tension. If you are lucky enough to have a tensioner for the a/c belt, the torx will release this tensioner as well. If there is no tensioner, you can use a shop rag to "walk" the belt off the compressor pulley while turning the crank bolt using a ratchet.. It's sort of like the same processes as replacing a bicycle chain. When you go to put on the new belt, it will seem really short, and may require another set of hands to turn the crank bolt with a ratchet. You will also notice the belt making a stretching noise.