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#1
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Adjust idle speed 300D??????
I cant figure out how to raise my idle speed in my 85 300D turbo......the step by step in a hanes manual is not helping, it mentions an adjustment nut of which I dont seem to have...... the pictures dont look like my throttle linkage?????
Im idling at around 6-700 rpms, should be 8-1000 right? little help??????
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85 300D 83 240D |
#2
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Isn't it 650 or 675 + or - 50?
Where in Md are you?
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1980 500SE/AMG Euro 1981 500SEL Euro 1982 380SEL 1983 300TD 1983 500SEC/AMG Euro 1984 500SEC 1984 300TD Euro 1986 190E 2.3-16 1986 190E 2.3 1987 300D 1997 C36 AMG 2003 C320T 4matic past: 1969 280SE 4.5 | 1978 240D | 1978 300D | 1981 300SD | 1981 300SD | 1982 300CD | 1983 300CD | 1983 300SD | 1983 380SEC | 1984 300D | 1984 300D | 1984 300TD | 1984 500SEL | 1984 300SD | 1985 300D | 1986 300E | 1986 560SEL | 1986 560SEL/Carat | 1987 560SEC | 1991 300D 2.5 | 2006 R350 |
#3
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turn that to 1,000 and the cars going to take off on you in gear if you don't stand on the brakes too.
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Proud owner of .... 1971 280SE W108 1979 300SD W116 1983 300D W123 1975 Ironhead Sportster chopper 1987 GMC 3/4 ton 4X4 Diesel 1989 Honda Civic (Heavily modified) --------------------- Section 609 MVAC Certified --------------------- "He who fights with monsters might take care lest he thereby become a monster. And if you gaze for long into an abyss, the abyss gazes also into you." - Friedrich Nietzsche |
#4
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Im on the Eastern Shore.........
Well, it sounds like my idle is where it should be I guess.....But man is it rough. if I give a bit more gas, 8-1000 RPMS, it seem stop viberating.....It seems to slide into gear pretty easy at the higher RPMs..... I just changed the fuel filters today, Ill see what that does.....It has 570,000 on it.......
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85 300D 83 240D |
#5
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Adjustment of the governor idle pin on the back of the injection pump will often take care of the rough idle. A search for "governor idle pin" or "rack idle pin" should provide adequate insight.
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#6
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Also look at your motor mounts and maybe even run some purge through the fuel system to clean out your injectors...I am due as well..
570K...impressive |
#7
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Not in a position to look it up right now, but I'm pretty sure correct idle for a 617 turmo engine is 750 or 800.
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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 |
#8
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what do you do with a real rough idle in a 78 that doesn't have a rack dampner ??? injectors are all rebuilt a couple months ago.
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Current money-pits: 96 Passat TDI 78 300D 100k miles(60miles/day)FOR SALE 91 Jetta Diesel 250k miles (80miles/day) 82 Toyota Diesel pickup 150k miles; out of service for a little while with a valve problem. All on BelenBioDiesel Past diesels: 01 Golf TDI 81 Isuzu P/U 85 Jetta 89 KW 425 cat 85 Pete 400 cat (currently still running the west coast with over 1.5 million miles) 81 KW 400 Cummins 77 Freightliner CO ???? Cummins (Buttercup) 57 180D lots of miles(gone but not forgotten) |
#9
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Where is the rack dampener? Behind the IP or between IP and firewall?
Also, it would be good to see how it looks like. Thanks. Idling at 700rpm but would like to up that a bit more.
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http://farm8.staticflickr.com/7271/7...144c3fc1dc.jpg |
#10
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Look for a bolt with a locknut on the rear of the IP, just forward of the oil filter housing. Aside from the shut-off valve, it's about the only thing back there.
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#11
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Tangofox, yes I've seen that one. How in particular do you adjust it? I tried unlocking the outer (rearmost) bolt and fiddled with the middle one. The RPMs didn't change. This is of course with engine running.
Which screw do I turn in or out? My RPMs are around 650-700 but when I start the car it's quite shaky. Sometimes on a stoplight you could feel the shaking, but not much.
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http://farm8.staticflickr.com/7271/7...144c3fc1dc.jpg |
#12
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MBeige, is it idleing rough at 700rpm? Stalling at stand? 800rpm is where I have mine cause I run the A/C a lot, but 700rpm should be fine? I guess 700rpm would use less fuel, too, but The OM617 uses very little fuel when just idleing, I have read elsewhere. Fiddle with that adjustment screw some more, I think CCW raised idle, doesn't it?
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PagodaLOVER 1967 230SL, manual 1959 180D, manual |
#13
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I just saw the previous post. 700rpm and shaking... Do people think the rack damp screw is the place to focus instead??
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PagodaLOVER 1967 230SL, manual 1959 180D, manual |
#14
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I know my motor mounts need replacing too, but the thing is I often see my idle as low as 600RPM. I was wondering if adjusting the rack screw could increase that at that time (when really warm, after a run--hence the shaking).
I don't know how to adjust the screw, it seems like the middle part is loose when the lock is turned out. Adjusting the rearmost screw CCW (outwards) didn't raise the RPM. The reason I ask is because when you unscrew this, the middle portion is loose and you can easily turn it by hand once you loosen it. Do you turn this CCW as well and then lock it? Like I said I don't know how to do it. Throttle linkage adjustments have also somehow fine tuned the idle a bit, but not much. ALDA is tweaked 1 full turn CCW and that helped the idling. Does not stall at stand but you can feel the shaking.
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http://farm8.staticflickr.com/7271/7...144c3fc1dc.jpg |
#15
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The "middle section" of the rack dampner deal is the locknut. The outer most part is the bolt itself.
If you are curious about it, take it out and have a look see. Won't hurt anything. Just need to find the right setting. Just be aware that it won't help your shaking if you have unbalanced injectors or other problems. |
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