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#1
02-21-2007, 09:28 AM
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OUCH! knocking over every bump and when shifting!
Hi guys,
I've got a 300d (87 model) that every bump I hit, it makes a thunk sound. Same thing when it shifts up or down. Big thunk sounds. No idea what it could be. I'd rather work on the engine any day. I'm clueless! I looked at the diff mounts. The rubber seems still intact. There are some small cracks in the rubber on the two mounts but they seem ok. But every bump a clunk and every shift too. I hate hearing that. Makes me nervous. Any thoughts??? Thanks! Nick
__________________
-E300d '99 350k -Suburban '93 220k -TDI Jetta '03 350k Sold -F250 '96 7.3 -Dodge Ram 12V -E320 '95 200k -E320 Wagon 1994 155k -300d Turbo '87 187k miles -E320 1994 200k -300d Turbo '84 245k (sold to Dan62) -300d Turbo '84 180k -300sd '80 300k -7.3 Powerstroke Diesel 15P Van 500k+ miles -190d '89 Non Turbo 2.5 5cyl 240k (my first MB) Tom's Imports of Columbia MO Ruined the IP in changing leaky delivery valve O-Rings - Refused to stand behind his work. Mid-MO MB drivers-AVOID Tom's. 
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#2
02-21-2007, 10:07 AM
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Sounds like it's time to start checking all engine/transmission/diff mounts. Also check steering and suspension components. Use a pry bar to check for play.
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RRGrassi 70's Southern Pacific #5608 Fairmont A-4 MOW car 13 VW JSW 2.0 TDI 193K, Tuned with DPF and EGR Delete. 99 W210 E300 Turbo Diesel, chipped, DPF/Converter Delete. Still needs EGR Delete, 232K 90 Dodge D250 5.9 Cummins/5 speed. 400K Gone and still missed...1982 w123 300D, 1991 w124 300D
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#3
02-21-2007, 10:10 AM
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Can you tell where it is?
front, rear, upper lower
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1987 300D (230,000 mi on a #14 head-watching the temp gauge and keeping the ghost in the machine) Raleigh NC - Home of deep fried sushi!
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#5
02-21-2007, 11:13 AM
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It's coming from the back. Every bump from the rear left as well as upshifts and downshifts sound like the cars about to fall apart!
__________________
-E300d '99 350k -Suburban '93 220k -TDI Jetta '03 350k Sold -F250 '96 7.3 -Dodge Ram 12V -E320 '95 200k -E320 Wagon 1994 155k -300d Turbo '87 187k miles -E320 1994 200k -300d Turbo '84 245k (sold to Dan62) -300d Turbo '84 180k -300sd '80 300k -7.3 Powerstroke Diesel 15P Van 500k+ miles -190d '89 Non Turbo 2.5 5cyl 240k (my first MB) Tom's Imports of Columbia MO Ruined the IP in changing leaky delivery valve O-Rings - Refused to stand behind his work. Mid-MO MB drivers-AVOID Tom's.
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#6
02-21-2007, 12:03 PM
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First, I would check the drivetrain as it sounds like possibly a flexplate.
The other spot I would check Is the trailing arm bushings where they attach to the subframe. Are you getting any shifting of weight when you change lanes or go around a curve?
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Sam 84 300SD 350K+ miles ( Blue Belle )
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#7
02-21-2007, 12:13 PM
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No I don't notice any weird shifting. Just clunks that I hear.
__________________
-E300d '99 350k -Suburban '93 220k -TDI Jetta '03 350k Sold -F250 '96 7.3 -Dodge Ram 12V -E320 '95 200k -E320 Wagon 1994 155k -300d Turbo '87 187k miles -E320 1994 200k -300d Turbo '84 245k (sold to Dan62) -300d Turbo '84 180k -300sd '80 300k -7.3 Powerstroke Diesel 15P Van 500k+ miles -190d '89 Non Turbo 2.5 5cyl 240k (my first MB) Tom's Imports of Columbia MO Ruined the IP in changing leaky delivery valve O-Rings - Refused to stand behind his work. Mid-MO MB drivers-AVOID Tom's.
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#8
02-21-2007, 12:21 PM
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The car is pretty level not any weird ways or anything, just noisy over bumps and when shifting. I hear clunks in both cases.
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-E300d '99 350k -Suburban '93 220k -TDI Jetta '03 350k Sold -F250 '96 7.3 -Dodge Ram 12V -E320 '95 200k -E320 Wagon 1994 155k -300d Turbo '87 187k miles -E320 1994 200k -300d Turbo '84 245k (sold to Dan62) -300d Turbo '84 180k -300sd '80 300k -7.3 Powerstroke Diesel 15P Van 500k+ miles -190d '89 Non Turbo 2.5 5cyl 240k (my first MB) Tom's Imports of Columbia MO Ruined the IP in changing leaky delivery valve O-Rings - Refused to stand behind his work. Mid-MO MB drivers-AVOID Tom's.
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#9
02-21-2007, 12:52 PM
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Quote:
__________________
1989 300E 144K
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#10
02-21-2007, 01:14 PM
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Quote:
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1974 240D, 125K mi, B100 now, SOLD 1980 300TD, 115K mi, 4-speed stick, roll-up windows, greasecar with two tank conversion (daily driver) 1985 300D, 220K miles, greasecar with two tank conversion, SOLD 1993 300D 2.5turbo, 158K miles, green/tan, B20-B50
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#12
02-21-2007, 07:32 PM
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If theres cracks in the flex discs, replace them. They're cracks under compression, gaping chasms when removed. Same with any other mounts.
Cracks = replace.
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#13
02-21-2007, 10:41 PM
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Quote:
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Andrew '04 Jetta TDI Wagon  '82 300TD ~ Winnie ~ Sold '77 300D ~ Sold
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#14
02-21-2007, 10:58 PM
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A friend's 300...
had the carrier bearing mount vibrate loose - GODAWFUL noise.
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1987 300D (230,000 mi on a #14 head-watching the temp gauge and keeping the ghost in the machine) Raleigh NC - Home of deep fried sushi!
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#15
02-22-2007, 02:30 AM
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Quote:
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RIP: 80 300SD RIP: 79 450SEL 2002 E430 4matic (212,000km) 2002 ML500 'sport'  ____________________________ FACEBOOK: PANZER450
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