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#1
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I have a 1991 560SEL and a couple of days ago the A/C blower stopped working. I have looked at the fuse (aux fan?) and that looks fine and tried different settings (auto/min/max, temps, etc) and it does not work. I am assuming that its either the fan motor or some regulator that is broken.
I took it to a shop to get an opinion and even w/o looking the guy said that this is common and the "expansion valve" located somewhere above the pedals must be choked and needs to be replaced. Somehow I don't buy that. Any feedback? Cheers, Raj |
#2
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Going from memory(fingers crossed), the #5 fuse controls the blower. Check it out.
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Mike Murrell 1991 300-SEL - Model 126 M103 - SOHC "Fräulein" |
#3
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A fuse can look fine even after it fails. Replace the fuse regardless of how it looks.
Regards, Sixto 91 300SE |
#4
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As to the question... I see absolutely no relationship between blower operation and expansion valve activity or lack there of.
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Steve Brotherton Continental Imports Gainesville FL Bosch Master, ASE Master, L1 33 years MB technician |
#5
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raj,
I also believe there is a separate strip fuse aside from the fuse in the fuse box. It's a 30A. If the design is anything like the 1991 420SEL that I worked on that had the same problem, it might be that fuse. It was located in a little 1"x2" plastic box just infront of the main fuse box. When you open this little box, there are two hold down screws for the fuse. I would double check this fuse and the fuse in the main fuse box before looking at anything in the dash. Nolan |
#6
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Thx. I replaced the fuse in the main fuse box and the problem still exists. I will next check on Nolan's suggestion of the additional strip fuse. Cheers, Raj
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