|
|
|
|
|
|
|
#1
04-09-2007, 07:27 PM
|
|||
|
|||
|
'81 300CD transmission slippage fixed!!! pics
So, today I finally purchased my mityvac. Dont know how I have driven the car for 2 weeks without it! I was able to finally get some real test data on my car. Went straight to the vacuum hose to the tranny, popped it off, plugged up the mityvac and it read 20 in. The second I pulled the throttle it dropped to 15 then rose right back up to 20 while I was pulling on the throttle(this is under the hood, mind you). I know from reading on this forum that too much vacuum causes the transmission to shift super softly.
So it seemed like my Vacuum Control Valve wasnt bleeding anything off. I pulled the linkage off the VCV coming from the throttle and tested it manually. Still no drop. The lever on the VCV gave me no resistance at all so I was afraid that it was broken internally. This is when I started pulling things apart. Honestly though, there was nothing to it:  There it is down on the Fuel Pump. A little closer:  Disconnect two vac hoses and the throttle link. Unscrew the hex bolts. And its out:  I unscrewed the side screws to see if the internals were broken. Fortunately, they were not. It was just adjusted such that turning the lever did not apply enough force to the upper stopper to move it up and bleed off.  Once I rotated the axle in there and tightened the nut back, the plastic lifter would move with the lever rotation and allow it to function properly. I put it all back in the car and voila, my car shifted hard as hell! So... I took it back out and loosened the nut, this time NOT removing the cover and allowed the axle to spin just a little bit. I put it back in and now it seems glorious. Thanks guys for all the fantastic posts. I was sure I needed a new, couple thousand dollar, transmission, but instead I bought a 35 dollar mityvac. Hooooraaay! 
|
|
#2
04-09-2007, 10:38 PM
|
||||
|
||||
|
Nice account of dealing with the VCV.
Darn your engine is clean! The valve cover is spotless...
__________________
------------------------------- '85 300D, 'Lance',250k, ... winter beater (100k on franken-Frybrid 3 Valve Kit) '82 300D, 'Tex', 228k body / 170k engine ... summer car '83 300TD Cali Wagon 210k, wife's car
|
|
#3
04-09-2007, 11:00 PM
|
||||
|
||||
|
Good troubleshooting and a valuable tidbit of information....
__________________
Palangi 2004 C240 Wagon 203.261 Baby Benz 2008 ML320 CDI Highway Cruiser 2006 Toyota Prius, Saving the Planet @ 48 mpg 2000 F-150, Destroying the Planet @ 20 mpg TRUMP .......... WHITEHOUSE HILLARY .........JAILHOUSE BERNIE .......... NUTHOUSE 0BAMA .......... OUTHOUSE Last edited by Palangi; 04-10-2007 at 12:14 AM.
|
|
#4
04-09-2007, 11:13 PM
|
|||
|
|||
|
Quote:
__________________
1977 300d 70k--sold 08 1985 300TD 185k+ 1984 307d 126k--sold 8/03 1985 409d 65k--sold 06 1984 300SD 315k--daughter's car 1979 300SD 122k--sold 2/11 1999 Fuso FG Expedition Camper 1993 GMC Sierra 6.5 TD 4x4 1982 Bluebird Wanderlodge CAT 3208--Sold 2/13
|
|
#5
04-09-2007, 11:34 PM
|
||||
|
||||
|
Kudos
Nice , nice, nice!
Is'nt it a pleasure to work on when they are kept sooo nice and clean!
__________________
Bama1  2008 SLK 280, Firemist Red - "Hurricane" 2001 F150 Lariat 4x4, Black on Black - "Badboy" 1982 240D 4 speed survivor -"Pearl" - Donated to Vietnam Veterans 1962 Oldsmobile Dynamic 88 -"Gertrude" 1954 model original owner - ~2.5M Gray softtop/solid exterior/modified chassis  
|
|
#6
04-10-2007, 12:36 AM
|
|||
|
|||
|
Well, first I dont know how to simply concatenate this post into the other, and the other post started as a "what's this" and ended on my transmission probs. I kinda figured this would be a good post for searchers wondering about their VCVs and their relation to the transmission shifting.
And thanks for the compliments guys, I was fortunate to buy this garage kept car with a fairly new ~60k mile motor in it. Its all in really great shape and I am super excited to own it. Particularly now that the transmission shifts so much better! Last edited by mistergood; 04-10-2007 at 12:48 AM.
|
|
#7
04-10-2007, 02:19 AM
|
|||
|
|||
|
Your valve cover....it's.....shiny! Thats one clean engine man!
__________________
"spreading a trail of obnoxious where ever we go" 1981 300sd w/ 341,500 miles http://www.wecrash.com/pics/ddda_banner.gif
|
|
#8
04-10-2007, 08:33 AM
|
||||
|
||||
|
forget the valve cover, look at the oil filter cover! MAN that's gotta be a nice ride. do you have pics of the entire beast? full engine bay shot and so on?
John
__________________
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!
|
 |
| Bookmarks |
|
|
Hybrid Mode
