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#1
11-10-2015, 03:30 PM
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at my wit's end
About three weeks ago my car (300D) caught on fire, just aft of the aux water pump. We discovered it before a lot of damage occurred. I had new alternator wires made and soldered the blue wire and horn wires back together. Everything turned out fine, and I left the aux pump disconnected after I had alternator tested at John's (vstech) advice. The other things I messed with at this time was replacement of the header pipe that I salvaged from John's "parts department," replaced the wastegate hose with a piece of diesel line that was same size, and replaced the hose between thermostat and water pump. All this is provided as background info because since I've had the car going again, it is shifting slowly and staying in gear longer, and it struggles uphill and won't exceed 65-70 on highway especially on upgrade. I can't figure out what happened while car sat for two weeks to cause this. I did a diesel purge last sat, changed all filters, etc. Changed transmission fluid/filter as well. Any ideas?? Before car was down due to the fire, it had no problems hauling ass.
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ENTIA NON SUNT MULTIPLICANDA PRAETOR NECESSITATUM! '84 300D Turbo; gone but not forgotten '85 Porsche 911 
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#2
11-10-2015, 03:41 PM
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Ya may have broken the boost sense ALDA hose...
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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 560SL convertible 1987 190D 2.5-5SPEED!!!  1987 300TD 2005 Dodge Sprinter 2500 158"WB 1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!
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#3
11-10-2015, 03:41 PM
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Have you checked the ALDA bolt and hose?
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2004 F150 4.6L -My Daily 2007 Volvo XC70 -Wife's Daily 1998 Ford F150 -Rear ended 1989 J-spec 420SEL -passed onto its new keeper 1982 BMW 733i -fixed and traded for the 420SEL 2003 Volvo V70 5 Speed -scrapped 1997 E290 Turbo Diesel Wagon -traded for above 1992 BMW 525i -traded in 1990 Silver 300TE -hated the M103 1985 Grey 380SE Diesel Conversion, 2.47 rear end, ABS -Sold, really should have kept this one 1979 Silver 300D "The Silver Slug" -Sold
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#4
11-10-2015, 03:41 PM
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I just got home, swing by and lemme look it over...
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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 560SL convertible 1987 190D 2.5-5SPEED!!! 1987 300TD 2005 Dodge Sprinter 2500 158"WB 1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!
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#5
11-10-2015, 03:46 PM
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Oh, yeah, I did clean out that bolt in back of intake manifold. I'm wondering if switchover is trashed.
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ENTIA NON SUNT MULTIPLICANDA PRAETOR NECESSITATUM! '84 300D Turbo; gone but not forgotten '85 Porsche 911
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#6
11-10-2015, 05:47 PM
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Well, that figures
As usual, vstech's usual sharp-eyed attention to detail honed from years surveying salvage yards no doubt, discovered the culprit. The hose from the switchover to ALDA had a hole in the rubber connection thingy. I cut that off and reattached and voila! I can haul ass now (as much as it is capable anyway).
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ENTIA NON SUNT MULTIPLICANDA PRAETOR NECESSITATUM! '84 300D Turbo; gone but not forgotten '85 Porsche 911
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#7
11-10-2015, 05:53 PM
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Awesome, always nice when its a cheap and easy solution
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2004 F150 4.6L -My Daily 2007 Volvo XC70 -Wife's Daily 1998 Ford F150 -Rear ended 1989 J-spec 420SEL -passed onto its new keeper 1982 BMW 733i -fixed and traded for the 420SEL 2003 Volvo V70 5 Speed -scrapped 1997 E290 Turbo Diesel Wagon -traded for above 1992 BMW 525i -traded in 1990 Silver 300TE -hated the M103 1985 Grey 380SE Diesel Conversion, 2.47 rear end, ABS -Sold, really should have kept this one 1979 Silver 300D "The Silver Slug" -Sold
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#8
11-10-2015, 07:21 PM
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What caused the fire ?
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1980 240d , chain elongation, cam marks reference: http://www.peachparts.com/shopforum/diesel-discussion/10414-help-i-need-check-stretch.html http://www.peachparts.com/shopforum/diesel-discussion/305365-9-degrees-chain-stretch.html evap fin cleaning: http://www.peachparts.com/shopforum/diesel-discussion/156207-photo-step-step-post-showing-w123-evaporator-removal-1983-240d-1982-300td.html?highlight=evaporator A/C thread http://www.peachparts.com/shopforum/diesel-discussion/297462-c-recommendations-mb-vehicles.html
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#10
11-10-2015, 07:30 PM
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Quote:
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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 560SL convertible 1987 190D 2.5-5SPEED!!! 1987 300TD 2005 Dodge Sprinter 2500 158"WB 1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!
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#12
11-10-2015, 07:44 PM
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The fact that weirdly enough the auxiliary pump on a W123 isn't fused would get it to cook when something happens to it, I guess...After decades of service it can seize, draw too much current and since there's no fuse, scary things happen.
 Putting a 2amp fuse in line with the plug for the pump is probably not a bad idea as preventative maintenance...
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"The MB W123 is so bulletproof, you can drive them forever. Which is a good thing as it takes that long to get anywhere." Betsie: 1984 W123 300D (hobby, 280k miles) Myrla: 2001 Mazda Protege 2.0 ES 5spd (daily driver, 130k miles) The Turd: 2007 Toyota Camry (wife's car, 118k miles)
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#13
11-10-2015, 09:22 PM
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On W123s non-fused Aux Pump can cause the Climate Control Circuit Board to burn and in one instance started an interior fire that caused a whole Car to burn.
It might depend on what version of Climat Control you have. There is a thread somewhere in what fuse to use.
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84 300D, 82 Volvo 244Gl Diesel
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#14
11-10-2015, 10:40 PM
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All the wires for the alternator and aux pump, and horn, and temp sensor are all bundled close together, and they all started burning on his car. I'm guessing that the aux pump sieZed, melted the alt wires, which shorted to the temp sender wire, and just began melting all together...
It was a mess. Glad he was made aware of it before his entire car disappeared...
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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 560SL convertible 1987 190D 2.5-5SPEED!!! 1987 300TD 2005 Dodge Sprinter 2500 158"WB 1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!
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#15
11-11-2015, 03:35 AM
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Check out this thread.
I lost it all....electrical fire high up in the dash Charlie sent from my pos computer
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there were three HP ratings on the OM616... 1) Not much power 2) Even less power 3) Not nearly enough power!! 240D w/auto Anyone that thinks a 240D is slow drives too fast. 80 240D Naturally Exasperated, 4-Spd 388k DD 150mph spedo 3:58 Diff We are advised to NOT judge ALL Muslims by the actions of a few lunatics, but we are encouraged to judge ALL gun owners by the actions of a few lunatics. Funny how that works
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