I had perferct a/c on my 91 500sl mercedes Because less than 8k miles ago the whole system was completely gone through.Drove car the fan belt broke.Got this fixed and now no A/C.? Help!

Asked by Jan 26, 2017 at 05:11 PM about the 1991 Mercedes-Benz SL-Class 500SL

Question type: Maintenance & Repair

I had perfect a/c on my 91 500sl Mercedes Because less than 8k miles ago the whole system was completely gone through.Drove car the fan belt broke.Got this fixed and now no A/C.? Help! What could cause the A/C to go out when the fan belt broke. Had fan belt, tensioner and smog pump replaced.  Drove it back from mechanic and noticed the was no A/C. The belt was still lying there and it was verified later that it did not "hit" anything that involved the A/C.  The a/c and the smog pump are on two different sides of the engine.  Could a relay or other controller go out to cause this situation?  Any ideas would be helpful.  My mechanic has no idea why a broken belt would effect the A/C.  Do you know why?  Thanks for ANY suggestions.

1 Answer

9,135

Unless the belt is attached to the compressor, that would not be your problem. Are you sure the same belt does not connect to everything - including the AC compressor. If it is a separate belt, most likely the switch that turns the compressor on and off or related relay. Best guess - it was just coincidence that it failed when your fan belt broke.

1 of 1 people found this helpful.

Your Answer

Mercedes-Benz SL-Class Experts

  • #1
    bobkat
    Reputation
    1,310
  • #2
    twhobie
    Reputation
    460
  • #3
    Michael Kane
    Reputation
    440
View All

Related Models For Sale

Used Porsche 911
3 Great Deals out of 158 listings starting at $38,995
Used Chevrolet Corvette
653 listings starting at $4,450
Used BMW 7 Series
4 Great Deals out of 146 listings starting at $5,995
Used BMW 3 Series
145 Great Deals out of 1,812 listings starting at $2,616

Used Cars For Sale

2017 Mercedes-Benz SL-Class For Sale
10 listings starting at $100,000
2016 Mercedes-Benz SL-Class For Sale
6 listings starting at $89,998
2015 Mercedes-Benz SL-Class For Sale
5 listings starting at $87,888
2014 Mercedes-Benz SL-Class For Sale
12 listings starting at $59,998
2013 Mercedes-Benz SL-Class For Sale
17 listings starting at $57,998

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.