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#1
07-11-2005, 03:27 PM
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intermittent W124 blower fan
95-F; 83% humidity.
No acceleration, just a nice smooth drive. HVAC Blower fan just stops working. Turn-off HVAC by pressing the ZERO (0)/off button for 1-minute. HVAC blower fan comes back on. What's the proper diagnostic ? FWIW, the fan will run for a 45-minute commute, but just die intermittently after a 1-2 hour heatsoak. :-( neil 1988 300TE 
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#2
07-11-2005, 03:46 PM
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Check the tensioner and belt. If it slips the system will cutout the climate control.
Good luck,
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#3
07-11-2005, 09:52 PM
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I don't know the history of your particular car, but as most owners of the 124 (at least the ones in the '80s which are in their mid to late teens now) know that there is a blower fan problem witch literally destroys the fuse holder. There is a variety of ways to correct the problem, one of which is to bypass the fuse and install a circuit breaker, along with a new blower motor. This is the route I took over a year ago. When the weather here in NM gets very warm like during the past month, the fan run on high speed with the AC keeps up for about what you said, 45 minutes to an hour, then the circuit breaker starts cutting in and out. On low speed it isn't an issue. My guess is that you have a circuit breaker installed rather than a fuse.
__________________
1996 SL320 97K miles 1996 C220 130k miles 1992 500SEL 170k miles <---sold 1986 300E 216k miles <---sold
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#4
07-12-2005, 02:23 PM
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Quote:
__________________
Vince '94 E500 2 piece SL rims, chip, K&N Filter, HR Springs. Mesa Valve "Y" Pipe, ASR Defeat, BW NOS, S600 Grille, SL600 300mm rear brakes
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#5
07-12-2005, 08:09 PM
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Vincec....the labor cost to replace the blower motor (with cages) was $165 which unless you really enjoy doing the work, is money well spent. I think it amounted to an R&R of 2.2 hrs.
__________________
1996 SL320 97K miles 1996 C220 130k miles 1992 500SEL 170k miles <---sold 1986 300E 216k miles <---sold
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#6
07-13-2005, 12:02 PM
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Quote:
__________________
Vince '94 E500 2 piece SL rims, chip, K&N Filter, HR Springs. Mesa Valve "Y" Pipe, ASR Defeat, BW NOS, S600 Grille, SL600 300mm rear brakes
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