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#1
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Some questions about my new SD
This is an '83 W126 with 152K. I have some concerns and some proposed repairs please tell me if there are more or if I am on the wrong track. Both fuel filters have just been changed.
1. Starts easily and idles smooth, but, has NO POWER when cold and improves somewhat when warmed up, but still way under normal power. I plan to a) adjust the valves, don't know when last done, b) clean banjo bolt and boost controller, c) adjust ALDA, d) clean injectors, e) check pump timing 2. Upshifts very quickly (could be related to #1 above) It's in 4th by 33 mph, regardless of pedal position, it shifts before much boost is evident. Shifts are of correct firmness. Doesn't downshift until almost stopped. It will shift normally if shifted manually. Will downshift when kickdown is depressed. Improves as it warms but still shifts much too early. Has a 1-2 flare when cold. I plan to a) fluid and filter, b) adjust bowden cable (have adjusted two turns (half turn at a time) with improvement). c) check vacuum controls of transmission (will need further help with this) What am I missing or is this a good plan of attack? Thanks for your help.
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Muleears '07 E320 Bluetec 133K my DD '04 Jaguar XJ8 VDP, 34K '10 Hyundai Accent 60K Grocery Getter '02 VW Golf soon to be on the road again '97 E300 Diesel Son's DD '61 VERY tolerant wife Hampton Roads, VA USA Gone but not forgotten: '67 250S 95K '86 300SDL '87 300D Turbo, 364K! R.I.P. '98 E300 Turbodiesel, 213K '02 S420, 164K '01 Prius 138K |
#2
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check your turbo for play etc. also check the boost fittings (if it has it) they tend to clog up with soot etc.
and your spot on with the transmission. make sure all the adjustments are perfect. Another thing to look at on the engine is the Valve clearance if they are out I understand they can cause all sorts of problems
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hum..... 1987 300TD 311,000M Stolen. Presumed destroyed |
#3
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Sounds like you have a good plan of attach. When looking at vacuum lines pay particular attention to elbows and connector T's that are made out of the softer rubber. Then tend to crack and close inspection is required. You may find that buying a couple yards of line and re-doing all the under hood vac's is a good (and easy) way to assure vacuum is running to spec. The transmission is very picky about vacuum.
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BENZ THERE DONE THAThttp://www.peachparts.com/shopforum/...c/progress.gif 15 VW Passat TDI 00 E420 98 E300 DT 97 E420 Donor Car - NEED PARTS? PM ME! 97 S500 97 E300D 86 Holden Jackaroo Turbo D 86 300SDL (o\|/o) |
#4
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Quote:
Quote:
If you properly make the adjustment to get the power back in the first paragraph, the problem of the 1-2 flare will disappear. |
#5
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Cal, sounds like a good plan so far. I need to see this new beast.
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79 MB 280 SEL Euro 133k 77 MB 450SL 154k 05 Mustang GT Vert (3) 104k 12 TSX Wagon Tech (66k) (192k) 06 Subaru Outback base (135k) 164k 16 Acura MDX (109k) 111k 18 Silverado 2500 LTZ Midnight (212) 56k 97 Ford Ranger 163k 11 RAV4 154k 01 Escape 173k 04 Honda Pilot 292k 1967 Mustang (Resto Project) 1968 Mustang (Parts Bin) 00 Ford Ranger 124k |
#6
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When I had throttle linkage problems, I went to a friend who was the original owner and mechanic on his own car parked next to his car and pulled each throttle linkage shaft off both cars and compared his length to my throttle shaft length and adjusted mine to match. Worked great, and while I was at it I lubed both his and mine with ATF.
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Gary OBK #37 |
#7
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So far I have cleaned the banjo bolt, turned the ALDA out one turn and backed out the bowden a total of 2 more turns (total of 4.5 from where it was when I got it). Now I have a little more power from a stop (ALDA) and it shifts at higher speeds, actually getting close to where it should. Still have an occasional 2-3 flare and 3-4 is a very soft, slow shift. It will downshift now from 4th to 3rd when slowed to about 18 mph. Still doesn't downshift with pedal pressure though. For example: when cruising at 35 mph in 4th, no amount of pedal pressure will prompt a downshift until the kickdown is engaged. I have not done the valves, I hope to Sunday morning but will be babysitting the grandkids. Two little helpers may make it too difficult! I have not checked pump timing, I may have to leave that to someone who knows how.
Where should I go from here? Tony: you have a PM
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Muleears '07 E320 Bluetec 133K my DD '04 Jaguar XJ8 VDP, 34K '10 Hyundai Accent 60K Grocery Getter '02 VW Golf soon to be on the road again '97 E300 Diesel Son's DD '61 VERY tolerant wife Hampton Roads, VA USA Gone but not forgotten: '67 250S 95K '86 300SDL '87 300D Turbo, 364K! R.I.P. '98 E300 Turbodiesel, 213K '02 S420, 164K '01 Prius 138K |
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