|03-18-2010, 05:43 PM||#1 (permalink)|
Date registered: Oct 2009
Vehicle: Daily Drive 82 240D 4 speed
Location: Central Mass.
Idle speed, and ALDA adjustment??
I was wondering how to adjust the idle speed in my 85 300D. Oil pressure drops low to none right now, but if i give it just the slightest tip of the toe on the accelerator it runs much quieter and oil pressure stays at the perfect level. I figured speeding up the idle just a hair would be a good remedy.
I also was wondering how to go about adjusting the ALDA. I've heard it can be harmful if not done properly. I'm not looking to make it into a tire burning monster, just keep up a bit better at the lights. Could i just give it an 1/8th or 1/4 turn, or should I be adjusting other things as well when doing this. And I would guess the car could/should be running while doing it, but i figured better safe than sorry and assume that. I've never seen a puff of black smoke come out aside from one or two realllly cold starts. So I think i could give it a bit more safely.
any responses appreciated, pictures with them greatly appreciated. Thanks in advance! I've checked a few posts about the ALDA adjustments, but nothing to really gauge how much would be good to do.
"it's more fun to drive a slow car fast then a fast car slow"
1982 240d - DD
1985 300D - pickin and stripping away
1987 300TD - poor beaten work truck
|03-18-2010, 06:15 PM||#2 (permalink)|
Date registered: Nov 2007
Vehicle: '83 300SD-daily driver '84 300CD-weekend car
Location: central Va
The idle adjustment is done with the screw between the IP and engine, it has a (14mm) lock nut at the bottom, I use a three inch socket to reach the lock nut, then just a flat blade screw driver. Clockwise to increase idle, go a little at a time.
The ALDA will probably have a black cap surrounded by a metal cup that covers the screw you need to get to. Remove the cover, loosen the lock nut, turn ccw a half turn, test drive.
Pics show one with the black cap, the other it has been removed.
'83 SD-daily driver
|03-19-2010, 07:38 PM||#3 (permalink)|
Date registered: Dec 2009
Make sure the banjo bolt is clean of soot or the alda won't sense added pressure. The bolt is on the rear of the engine by the air cleaner. Follow the lines from the alda to the pressure regulator then to the banjo.
|03-20-2010, 03:46 AM||#4 (permalink)|
Date registered: Feb 2004
Vehicle: 82 300D VNT, 80 240D 3.0T
|10-16-2010, 04:52 PM||#5 (permalink)|
BenzWorld Junior Member
Date registered: Aug 2010
Vehicle: 1991 500 SL; 1991 190E 2.6; 1985 300D
Location: Lorton, VA
Correct Idle Speed for 85 300D-T?
Before I attempt an adjustment...What is the correct idle speed for the 617 turbo engine? In park? In drive with brake applied? I've seen different numbers listed in specs. Mine idles at close to 900 rpm in park. Seems a little high.
|10-16-2010, 07:10 PM||#6 (permalink)|
Date registered: Oct 2009
Vehicle: 2000 VW Golf Variant
Location: Leiden, Netherlands
Idle speed should be 700–800 rpm in P without A/C.
After adjustment, test in D with brake applied and with the A/C, see if the engine runs smoothly. If not adjust rpm upwards.
What kind of tachometer do you use? The on-board one isn't accurate enough.
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