Ever start fixing things and, by the end of the day, you've broken more things than you've fixed?

I set out to replace the lion's share of rotted vacuum lines on my 87 300TD (Klause) - and to reattach my ALDA (in an effort to get my turbo working again). Well - got most of the biggest leaker's taken care of - but snapped off the little nipple on brake booster hard line (ithe 61b connection on item #140 seen on the vacuum diagram). Wrapped the open connection with electrical tape and put a golf tee in the open line. Now the car won't shut off on it's own (maybe related ;-) I have still good brakes though.

The ALDA needs to be adjusted (evidently) because the car now has no guts and still the turbo does not come on.

The good news is shifting is much tighter, and my radio gets good FM reception (now that I manually extended the antenna).

I parked Klaus nose to nose with Seabiscut (my newly acquired 87 300D) so I can stare and compare the lines, I know I must have mis-routed something.

After I order a new booster line I'm going outside to work some more. At least it is a nice day !

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1987 300TD named Klause
1987 300TD named Spouse
1987 300D named Seabiscuit
1980 300TD names Chloie (now sadly gone)

Progress - After working snout to snout with my two operational diesels, I determined that all of my vacuum line routing was spot on. I rechecked each connection to make sure everything was tight too.

Shutoff problem: I noticed the stop lever would not stay down after I manually shut off the engine. I figured it had to do with the brake booster nipple that broke off, so I pulled the golf tee out and attached my hand-vac and applied 10psi - that worked. The stop lever pulled down. Started the car and shut it off, everything worked. So I ordered the replacement booster hose from Pelican Parts (third order this month - by the time it's all done, I'll have replaced everything on this car).

ALDA problem: I took it back off and checked that the original shim washer was still there - it was. So I looked at my other car - it's ALDA was turned in a different direction, slightly, than my trouble engine. So when I reattached it I oriented the nipple in the same direction (slightly towards the rear of the car instead of slightly towards the front). Took it for a ride - no difference. Clearly, more work to be done here. Am going to read up on how to put together a turbo boost gauge so I can see what is happening (or not happening).

Stay tuned !

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1987 300TD named Klause
1987 300TD named Spouse
1987 300D named Seabiscuit
1980 300TD names Chloie (now sadly gone)

Shut off works on vacuum. No vacuum or vacuum leak = no shutoff.

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85SD 240K & stopped counting painted, putting bac together. 84SD 180,000. sold to a neighbor and member here but I forget his handle. The 84 is much improved from when I had it. 85TD beginning to repair to DD status. Lots of stuff to do.

I've managed to eliminate about 90% of the vacuum hoses under the hood of my 87. Its a good thing.

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CENSORED due to not family friendly words

Eliminate 90% of the vacuum lines? Can you tell a little more? Does everything still work that should?

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1987 300TD named Klause
1987 300TD named Spouse
1987 300D named Seabiscuit
1980 300TD names Chloie (now sadly gone)

The alda controls fueling, not boost. If your turbo isn't coming on, there's another issue.

What I would suggest is to test each of your switchover valves.

+1

Check the overboost solenoid, on the firewall next to the washer tank.

There should be a hose going over to that from the manifold, if that hose is leaking or fell off then you have no boost. Or if you have the hose plugged into the wrong port on the valve.

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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

I had an issue after cleaning out the intake manifold which caused the over-boost sensor to stick close (grounding the solenoid). This prevented the extra fuel delivery needed to run the turbo at boost pressure.

Try disconnecting the wire to the over-boost sensor and running it that way. Check the sensor for a closed ground connection (normally open absent over-pressure limit).

Alternatively, just by-pass the vacuum line around the solenoid.

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http://i284.photobucket.com/albums/l...aman/Fleet.jpg

Peach Parts W124.128 User Group.

80 280SL
85 300SD
87 300TD
92 300D 2.5 Turbo
92 300TE 4Matic

Answer to that is a NO DOUBT ABOUT IT YESSSSSSSSSSSSSS!

Depending on the regulations in your state, you could eliminate the egr system and along with it a good portion of the vacuum business going on under the hood. This will lessen the headaches re: vacuum in the long run. Fewer points of failure. I say do it, you'll thank yourself.

Search for informative and lengthy threads by members "gsxr" and "bcarlton" (many others exist, but these come to mind) with respect to topics of egr/performance/shifting and in there somewheres you will find the answer to getting your ideal setup.

BIG HINT - If you don't already own a MityVac or similar, GET ONE. That's an order

MBZ123

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1987 300SDL "Rhona" 218k
1986 300SDL "Johanna" 166k - Abducted 5/15 outta SFV Reward 4 info
1984 300TD "Petra" 212k - Parts yard pirate, arrrrgh
1982 300CD "FrankenFemme" 178k - Eyes only TS-XWRKS transplant abomination (loc. classified)
1980 230CE "Lulu" aka "Terminal" 277k - Dying the slow death
1985 300CD "Gerda" 203k - She ain't playin' SOLD
1983 300TD "Svetlana" 240k...and pleading for more. SOLD


"What a heavy load Einstein must've had...F&@%!NG morons everywhere!" - David Lynch

MityVac, great ebay item.

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1985 300D 198K sold
1982 300D 202K
1989 300E 125K
1992 940T

"If you dont have time to do it safely, you dont have time to do it"

"The democracy will cease to exist when you take away from those who are willing to work and give to those who would not."

Hey JBrian. I recently replaced ALL the vacuum lines on a 1987 300D so a family member could sell it and it would be 100% for sale. I now have to do the same work on Miska my new-to-me 1987 300D. After doing this process a thousand times I am going to eliminate the vacuum lines on my personal car. If you're interested I have all these hoses I was going to use, but I would sell at a fair price if you need any for your 603s.

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Only diesels in this driveway.
2005 E320 CDI 243k Black/Black
2008 Chevy 3500HD Duramax 340k
2004 Chevy 2500HD Duramax 220k

bcarlton -- do you mean Brian Carlton?

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"Senior Luna, your sense of humor is still loco... but we love it, anyway." -rickymay ____ "Your sense of humor is still loco... " -MBeige ____ "Señor Luna, your sense of humor is quite järjetön" -Delibes

1982 300SD -- 211k, Texas car, tranny issues ____ 1979 240D 4-speed 234k -- turbo and tuned IP, third world taxi hot rod

2 Samuel 12:13: "David said to Nathan, “I have sinned against the Lord.” And Nathan said to David, “The Lord also has put away your sin; you shall not die."

Nope. If you were talking to me Jooseppi, I was talking to jbrianfoto. Just abbreviated his name because I was too lazy with no sleep these last 48 hours.

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Only diesels in this driveway.
2005 E320 CDI 243k Black/Black
2008 Chevy 3500HD Duramax 340k
2004 Chevy 2500HD Duramax 220k

Yes, specifically the thread that's eleventy-billion pages in length on adjusting the transmission. It covers all number of important topics, most applicable to OP would be getting the vacuum system in order and in doing so eliminating the egr components if he so chose.

I tried, more like failed, to quick search for that and other specific threads to add to the post above, but alas, I was defeated. Or reterded. Or both. Dunt matter, the threads are there. Happy digging.

MBZ123

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1987 300SDL "Rhona" 218k
1986 300SDL "Johanna" 166k - Abducted 5/15 outta SFV Reward 4 info
1984 300TD "Petra" 212k - Parts yard pirate, arrrrgh
1982 300CD "FrankenFemme" 178k - Eyes only TS-XWRKS transplant abomination (loc. classified)
1980 230CE "Lulu" aka "Terminal" 277k - Dying the slow death
1985 300CD "Gerda" 203k - She ain't playin' SOLD
1983 300TD "Svetlana" 240k...and pleading for more. SOLD


"What a heavy load Einstein must've had...F&@%!NG morons everywhere!" - David Lynch