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new 1984 300SD owner checking in
Hello all,
I recently became a proud member of MB diesel family. Purchased a 1984 300SD in California, available with all records going back to 1984. Very low miles, 131xxx, one family owned vehicle. I have studied this forums for the last three weeks. The wealth of information is amazing! Since purchasing the car, I drove from California to North Carolina with no issues with exception of hot start I mentioned in my other post. Got 26-29 mpg on that trip! So far I have changed the oil/filter, both fuel filters, replaced air housing mounts with new ones (added metal caps), replaced the whole tie rod assembly and did the brake guide mounts. Factory stereo was disconnected since the owner said it was draining the battery. Installed an Alpine HU, no issues with battery three weeks later. Bought some of the parts right here!! On the list of things todo are UCA (joint bushings are destroyed on each one), replace trannsmission mount, figure out why both front power windows dont work, solve my starter issue, replace all belts and figure out whining noise from the transmission when in PARK or NEUTRAL. Great car, great forum here. |
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Whoo Hoo!!
Keep us posted.
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83 SD 84 CD |
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Welcome! from another 1984 300sd owner
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Will W - 1984 300SD federal |
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Congrats
Hope you enjoyed the road trip. We want to see photos
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Mac 2002 e320 4matic estate│1985 300d│1980 300td Previous: 1979 & 1982 & 1983 300sd │ 1982 240d “Let's take a drive into the middle of nowhere with a packet of Marlboro lights and talk about our lives.” ― Joseph Heller, Catch-22 |
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Congrats Pics please.
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Some pictures I have so far.
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thankfully, the auto shop on base had a press to get the guide rods in.
About to go do both UCA's and replace transmission mount. When I took the car to the dealer, one item on the list of things to fix i am not sure about: "Modulator cap for transmission housing recommend replacing $93.28" What exactly is that part? I'm not terribly familiar with automatics yet.. |
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The M-Bs of that era use vacuum to modulate the transmission shifting based on engine load and speed.
On a gas engine the engine vacuum naturally happens based on throttle position. On a Diesel you do not have a throttle so no engine vacuum. You have artificially produced vacuum from the vacuum pump. So on the fuel control linkage there is a device known as a VCV or vacuum control valve. That varies the constant vacuum coming from the pump into a signal that emulates what a gas engine would be doing at that point. This goes to the modulator on the transmission to regulate the shift points. The cap is the adjustment device for the modulator. It is inexpensive and easy to replace once you are under the car. The hard part is tuning the new one properly. The correct way is to tap in a pressure gauge into the transmission fluid test port and tune it based on fluid pressure. Lots of posts on here about this. Go to startekinfo.com, on the left is MB workshop resources, click through a couple pages to the 126 service info, you have the entire shop manual for the car available online.
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The OM 642/722.9 powered family Still going strong 2014 ML350 Bluetec (wife's DD) 2013 E350 Bluetec (my DD) both my kids cars went to junkyard in 2023 2008 ML320 CDI (Older son’s DD) fatal transmission failure, water soaked/fried rear SAM, numerous other issues, just too far gone to save (165k miles) 2008 E320 Bluetec (Younger son's DD) injector failed open and diluted oil with diesel, spun main bearings (240k miles) 1998 E300DT sold to TimFreeh 1987 300TD sold to vstech |
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As a former '84 SD owner, I will say that it was my favorite of the 126's. Mine had all the best options, but not the trap ox (being a CA car). I think '84 was the best year for the OM617 powered cars. The gray interior is my favorite as well. The paint on mine was the only real problem, but yours looks really good. Enjoy your car, as I know I did when I had mine....Rich
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All Diesel Fleet 1985 R107 300SLD TURBODIESEL 2005 E320 CDI (daily) LOTS of parts for sale! EGR block kit http://www.peachparts.com/shopforum/diesel-discussion/355250-sale-egr-delete-block-off-plate-kit.html 1985 CA emissions 617 owners- You Need This! Sanden style A/C Compressor Mounting Kit for your 616/ 617 For Sale + Install Inst. Sanden Instalation Guide (post 11): http://www.peachparts.com/shopforum/diesel-discussion/367883-sanden-retrofit-installation-guide.html |
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Thank you for the info. I went to startekinfo.com, but only found manuals for 123 and 124 models. I did buy a Chiltons manual, maybe I'll find something there.
does anyone have a link to an official MB manual? |
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Cruise Control not working? Send me PM or email (jamesdean59@gmail.com). I might be able to help out. Check here for compatibility, diagnostics, and availability! (4/11/2020: Hi Everyone! I am still taking orders and replying to emails/PMs/etc, I appreciate your patience in these crazy times. Stay safe and healthy!) 82 300SD 145k 89 420SEL 210k 89 560SEL 118k 90 300SE 262k RIP 5/25/2010 90 560SEL 154k 91 300D 2.5 Turbo. 241k 93 190E 3.0 235k 93 300E 195k |
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Thank you! I dont know why the 126 manuals wont show up from the main page.
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Wow, that's a Beautiful car! GOOD SCORE!
no press is needed to install the Guide rod bushings, but it's easy with a press. they will press in by hand, or you can use the bolts to pull it in. glad you got it done! I love the wood shifter handle you've got, looks great. is your leather interior grey or creme? it looks creme in the pics. UCA joints are a snap to install too. you need to post more interior shots, include the center console, and some close ups of the gauges too! also, ENGINE SHOTS!!! glad another NC resident has a great SD! enjoy her!
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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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What a beautiful car! Don't sweat the mechanical stuff as all of it is easy to do and cheaper than something like a re-paint. I'm no good at cosmetic work, so I have to farm that out and it gets real expensive fast.
You say you are on a military base? What division? Thank you for your service!
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1991 F250 super-cab 7.3 IDI. (rebuilt by me) Banks Sidewinder turbo, hydroboost brakes, new IP and injectors. 2003 S430 - 107K 1983 300SD - Tanoshii - mostly restored ~400K+. 1983 300SD - Good interior. Engine finally tamed ~250K. Monark Nozzle Install Video - http://tinyurl.com/ptd2tge |
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Quote:
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