close to 300k miles on my 83 300dt. the previous owner converted the air conditioning system to 134a. in the two years i've had the car never really used the air conditioner. lately it has been very hot here. decided to charge the system and see what happens. well i went from basically no air to nice cold air. total cost somewhere around $4. bragged and bragged to my friends about my now cold car. then the blower stops running. naturally. so i spend some time here looking for insight. hit the blower and shock the brushes. that is the one that caught my eye. then another post. slam the passenger front door like you really mean it. so that is what i do. and guess what. the blower is now working just fine. realize this is in all likelihood a temporary fix. so be it. the point. want to thank whomever suggested the door slamming. god, love this board. thank you all.

Door slamming to fix ac thats a first! Maybe if you slam the trunk lid it will run better?

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1999 SL500
1969 280SE
2023 Ram 1500
2007 Tiara 3200

Not the trunk, the hood!

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Scott
1982 Mercedes 240D, 4 speed, 275,000
1988 Porsche 944 Turbo S (70,000)
1987 Porsche 911 Coupe 109,000 (sold)
1998 Mercedes E300 TurboDiesel 147,000 (sold)
1985 Mercedes 300D 227,000 (totaled by inattentive driver with no insurance!)
1997 Mercedes E300 Diesel 236,000 (sold)
1995 Ducati 900SS (sold)
1987 VW Jetta GLI 157,000 (sold)
1986 Camaro 125,000 (sold - P.O.S.)
1977 Corvette L82 125,000 (sold)
1965 Pontiac GTO 15,000 restored (sold)

When the brushes get thin on the blower moter for a W126, I just kick the panel underneath the dashboard. And it starts working. I actually think the term for this panel IS a kick panel.

How novel.

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1987 300SDL (324000)

1986 Porsche 951 (944 Turbo) (166000)

1978 Porsche 924 (99000)

1996 Nissan Pathfinder R50 (201000)

Yeah, its the brushes in the motor.. you give the panel a swift kick and it will come back on. Fix it now or soon the kick won't work anymore!

Slamming the trunk WILL make it run better if it is a fuel delivery problem. All other engine problem causes require slamming the hood.

You need to fix that blower motor pronto.

Good luck,