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#1
10-28-2011, 11:16 AM
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transmission fluid smells burnt
the saga continues
took my 85 300SD on it's first long drive yesterday got about 70 miles into it and noticed that the tranny started losing power at highway speed when i was going up hills nothing terrible should mention that it still shifts very gently (thot they were supposed to be a bit stiffer) after about 90 miles i pulled over b/c i was looking at an 800 mile one way trip and wasn't liking my options of getting stranded in the middle of nowhere fluid level seems just a tiny but high but there was no foam in it it does smell burned tho it shouldn't it's new fluid i didn't change my filter when i took the tranny out of the 82 but did drain the torque converter going to drop the tranny oil pan and change the filter and clean out the pan this time what causes the burned smell? is it as bad a sign as i think it is? thx
__________________
1985 MB 300SD 1982 MB 300SD 1977 Jawa 634 California w/ sidecar 
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#2
10-28-2011, 11:53 AM
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What causes the burned smell? Friction.
The brake bands and the clutch packs are made of paper(?) based friction material bonded onto steel. Under normal circumstances they'll work - but when they get old or contaminated... How old is the fluid?
__________________
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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#3
10-28-2011, 01:32 PM
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not even 2 months
the filter on the other hand could be very old
__________________
1985 MB 300SD 1982 MB 300SD 1977 Jawa 634 California w/ sidecar
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#4
10-28-2011, 01:38 PM
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Well like you say...
Drain the torque converter (consider doing the transmission oil cooler lines too) replace the filter and check for debris. Drive it and see how you go. As we don't have smelly-net (thankfully!) I'd take a sample of oil to someone who knows, to get a second opinion, if you are unsure about the burnt smell.
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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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#5
10-28-2011, 01:41 PM
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i read in one of the other posts (somewhere) that doing that can cause as many problems as it fixes.
i've got the pan off now looks clean for the most part the filter is a bit dark but not BLACK i'll do the full meal deal again and see what happens thx
__________________
1985 MB 300SD 1982 MB 300SD 1977 Jawa 634 California w/ sidecar
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#6
10-28-2011, 04:22 PM
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Someone said that draining the torque converter and replacing the fluid and filter causes problems? On this forum? Did I read that right? Am I missing something?
Stop being so cheap and change the filter along with the fluid when you do a transmission service.
__________________
'02 BMW 325i '85 300D 450k '93 190E 2.6 170k(killed by tree) '08 Ducati Hypermotard 1100S 6k '06 Ducati S2R800 14k(sold)
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#7
10-28-2011, 04:28 PM
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Old wives tale.Clogged filter can burn up clutch packs.
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1999 w140, quit voting to old, and to old to fight, a god damned veteran, deutschland deutschland uber alles uber alles in der welt
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