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#1
11-03-2011, 02:41 PM
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82 240D Blower motor not working
I recently ordered a new fan switch from Phil and got it installed today, turned the key no fan. So I checked the #8 fuse it looked good, pulled it out just to make sure looks good. So I pulled the blower motor out and it looked fine, but just to double check I removed the blower motor from my 83 300D that I know works and still no fan? Is there anything else I can check...I really need that fan working it is cold down here and the 240D is my dependable daily driver.
Thanks in advance
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1983 300D Russett Brown, Euro Bumpers, Euro Headlights, Rear Headrests, lots of upgrades 256,000 (Sasha) 1980 300TD 200K Third row seat, original owner car with lots of documentation We live in a world that goes faster every day and it seems there's a lack of time for each one of us 
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#2
11-03-2011, 02:48 PM
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I think you are going to need to get an ohm meter or test light bulb and trace where electricity IS and is NOT going from the battery to your fan...
Are ALL other electrical things on your car working just fine ? Also, in the mean time ... .you could hard wire ( with appropriate size inline fuse ) your blower with an on off switch in the car... it is probably already pretty cold up there....
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1980 240d , chain elongation, cam marks reference: http://www.peachparts.com/shopforum/showthread.php?threadid=10414 http://www.peachparts.com/shopforum/diesel-discussion/305365-9-degrees-chain-stretch.html evap fin cleaning: http://www.peachparts.com/shopforum/showthread.php?t=156207&highlight=evaporator A/C thread http://www.peachparts.com/shopforum/diesel-discussion/297462-c-recommendations-mb-vehicles.html
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#3
11-03-2011, 03:02 PM
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Quote:
http://www.peachparts.com/shopforum/diesel-discussion/305936-everybody-better-take-care-their-123-blowers.html As the blower motors for cars with AC are different (says in the thread linked above) do you know if they need more power?
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1992 W201 190E 1.8 171,000 km - Daily driver 1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone 1965 Land Rover Series 2a Station Wagon CIS recovery therapy! 1961 Volvo PV544 Bare metal rat rod-ish thing I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior  Don't leave that there - I'll take it to bits! Last edited by Stretch; 11-03-2011 at 03:17 PM.
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#4
11-03-2011, 03:03 PM
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While the fan control switches are in position such that the fan SHOULD turn on, wiggle the key switch and see if it comes on. I've seen a flaky ignition switch cause this trouble before.
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2001 SLK 320 six speed manual 2014 Porsche Cayenne six speed manual Annoy a Liberal, Read the Constitution
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#5
11-03-2011, 03:10 PM
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Army , I don't know what else you mean.... it seems that the electricity is not getting to the blower and tracing down the route it Should take...and finding the point at which it is not making that Next Step seems like the only logical method... perhaps I did not understand your question...
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1980 240d , chain elongation, cam marks reference: http://www.peachparts.com/shopforum/showthread.php?threadid=10414 http://www.peachparts.com/shopforum/diesel-discussion/305365-9-degrees-chain-stretch.html evap fin cleaning: http://www.peachparts.com/shopforum/showthread.php?t=156207&highlight=evaporator A/C thread http://www.peachparts.com/shopforum/diesel-discussion/297462-c-recommendations-mb-vehicles.html
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#6
11-03-2011, 03:16 PM
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Quote:
Like you say it would be best to protect any quick fix wiring with a fuse; particularly as in my experience most of my quick fixes become permanent features and then get called "character"! EDIT - I've changed the quote in my first post to make what I'm on about a bit clearer (hopefully)
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1992 W201 190E 1.8 171,000 km - Daily driver 1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone 1965 Land Rover Series 2a Station Wagon CIS recovery therapy! 1961 Volvo PV544 Bare metal rat rod-ish thing I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior Don't leave that there - I'll take it to bits!
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#7
11-03-2011, 03:19 PM
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I just fixed an 82 240 this morning.
pull the fuse cover, pull the #8 fuse, and look VERY CLOSELY at the holder end at the top, the center will likely have a bit of plastic melted sticking out of it. get a small knife, and clean it out, I bet your blower works again...
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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread "as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do! My drivers: 1987 190D 2.5Turbo 1987 190D 2.5Turbo 1987 190D 2.5-5SPEED!!!  1987 300TD 1987 300TD 1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!
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#8
11-03-2011, 03:27 PM
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Check for power at the #8 fuse. If it's hot, check for power at the switch. If that too is hot, then check at the blower resistors.
As for the quick fix, I just did one yesterday on mine, but I was able to wire it so that the power is routed through the original 16 amp fuse and the original resistor array. My meter measure current up to 10 amps, so I did some checking on the low and middle settings. I got up to 10 amps starting current with the setting I decided to make semi-permanent, which then drops to about 8. Consider yourself lucky you aren't dealing with ACCIII like I am.
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Whoever said there's nothing more expensive than a cheap Mercedes never had a cheap Jaguar. 83 300D Turbo with manual conversion, early W126 vented front rotors and H4 headlights 400,xxx miles 08 Suzuki GSX-R600 M4 Slip-on 22,xxx miles 88 Jaguar XJS V12 94,xxx miles. Work in progress.
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#9
11-03-2011, 03:28 PM
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Wow that draws way more power than I thought - thanks for the info Skippy.
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1992 W201 190E 1.8 171,000 km - Daily driver 1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone 1965 Land Rover Series 2a Station Wagon CIS recovery therapy! 1961 Volvo PV544 Bare metal rat rod-ish thing I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior Don't leave that there - I'll take it to bits!
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#10
11-03-2011, 03:32 PM
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Quote:
__________________
John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread "as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do! My drivers: 1987 190D 2.5Turbo 1987 190D 2.5Turbo 1987 190D 2.5-5SPEED!!! 1987 300TD 1987 300TD 1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!
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#11
11-03-2011, 03:32 PM
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10 Amps doesn't surprise me, but I didn't know for sure and was afraid to doubt the 1 Amp statement for fear of attack.
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2001 SLK 320 six speed manual 2014 Porsche Cayenne six speed manual Annoy a Liberal, Read the Constitution
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#12
11-03-2011, 03:37 PM
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The rule on all these kinds of things for the fuse would be exactly the same fuse rating which it uses in the car.... Never ever bigger.....
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1980 240d , chain elongation, cam marks reference: http://www.peachparts.com/shopforum/showthread.php?threadid=10414 http://www.peachparts.com/shopforum/diesel-discussion/305365-9-degrees-chain-stretch.html evap fin cleaning: http://www.peachparts.com/shopforum/showthread.php?t=156207&highlight=evaporator A/C thread http://www.peachparts.com/shopforum/diesel-discussion/297462-c-recommendations-mb-vehicles.html
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#13
11-03-2011, 03:41 PM
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I always size the wire for the coolest spec based on the fuse rating.
so for a 16A fuse, I'd run minimum #12 wire this is overkill for a motor load, as the startup amps is why the fuse is large... unless there is a bind...
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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread "as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do! My drivers: 1987 190D 2.5Turbo 1987 190D 2.5Turbo 1987 190D 2.5-5SPEED!!! 1987 300TD 1987 300TD 1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!
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#14
11-03-2011, 06:47 PM
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Wow...thanks for all the replies I appreciate it. I will check the fuse holder first then check it to see if it is hot. I will check that first and report back. Thanks again everyone!
__________________
1983 300D Russett Brown, Euro Bumpers, Euro Headlights, Rear Headrests, lots of upgrades 256,000 (Sasha) 1980 300TD 200K Third row seat, original owner car with lots of documentation We live in a world that goes faster every day and it seems there's a lack of time for each one of us
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#15
11-04-2011, 03:35 AM
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Quote:
But I was thinking that if fuse number 8 was say 16 amps what else is on that "circuit"? I could be wrong - I don't have the wiring diagram to hand (or the will to check!) - but if other things are also protected by the same fuse a lower fuse rating for the blower motor "on its own temporarily rigged wire" would be appropriate wouldn't it?
__________________
1992 W201 190E 1.8 171,000 km - Daily driver 1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone 1965 Land Rover Series 2a Station Wagon CIS recovery therapy! 1961 Volvo PV544 Bare metal rat rod-ish thing I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior Don't leave that there - I'll take it to bits!
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