My car feels like the turbo is not working. 0 to 60 times are around 16 seconds and there is no feeling of the turbo coming on. What would be the first thing to check?

Check/clean the banjo bolt in the intake manifold that feeds pressure to the ALDA. If the IP has no boost signal, it will be like driving with a N/A engine.

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All Diesel Fleet
1985 R107 300SLD TURBODIESEL
2005 E320 CDI (daily)

LOTS of parts for sale!


EGR block kit
http://www.peachparts.com/shopforum/diesel-discussion/355250-sale-egr-delete-block-off-plate-kit.html

1985 CA emissions 617 owners- You Need This!
Sanden style A/C Compressor Mounting Kit for your 616/ 617 For Sale + Install Inst.

Sanden Instalation Guide (post 11):
http://www.peachparts.com/shopforum/diesel-discussion/367883-sanden-retrofit-installation-guide.html

Also make sure the overboost protection valve is not clogged, remove it from the drivers side firewall and try to blow through he bottom connector. If you cant blow through it that's a problem. Buy new, or clean it with brake cleaner fluid. Make sure all the rubber fitting are good while you're at it, they get cracked and don't hold pressure.

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1987 300D
2005 E320 CDI

That car won't do 0-60 mph in 16 seconds without help from the turbo. How's the air cleaner? How old are the fuel filters?

Sixto
87 300D^2

I was getting 16 maybe 17 seconds 0 to 60 mph. Maybe the stopwatch on my i phone is wrong. All filters are recently replaced.

Anyway, thanks ROLLGUY and BLACKCDI, I checked both your suggestions and found a broken hose at the overboost protection valve. The turbo is working fine now.

You have to love these simple fixes. Since my foot's already in my mouth and BLACKCDI knows I'm a goofball I'll keep going. The turbo was contributing to the power even with the overboost protection solenoid blocked. It was just a very limited contribution. If you [hypothetically] jam the turbo impeller, you will not get to 60 mph within 16 seconds.

Sixto
87 300D^2

Lets roll out this new public service graphic......

__________________
Jimmy L.
'05 Acura TL 6MT
2001 ML430 My Spare

Gone:
'95 E300 188K "Batmobile" Texas Unfriendly Black
'85 300TD 235K "The Wagon" Texas Friendly White
'80 240D 154K "China" Scar engine installed
'81 300TD 240K "Smash"
'80 240D 230K "The Squash"
'81 240D 293K"Scar" Rear ended harder than Elton John

Now that's funny!

__________________

All Diesel Fleet
1985 R107 300SLD TURBODIESEL
2005 E320 CDI (daily)

LOTS of parts for sale!


EGR block kit
http://www.peachparts.com/shopforum/diesel-discussion/355250-sale-egr-delete-block-off-plate-kit.html

1985 CA emissions 617 owners- You Need This!
Sanden style A/C Compressor Mounting Kit for your 616/ 617 For Sale + Install Inst.

Sanden Instalation Guide (post 11):
http://www.peachparts.com/shopforum/diesel-discussion/367883-sanden-retrofit-installation-guide.html

It would be funnier if the guy owned a Mercedes. Jimmy I was getting ready to call the police and have them perform a welfare check on you. I've seen a couple threads with TD(T) and nothing from Batman. I'm glad you are still lurking around.

__________________
1987 300TD 309, xxx 2.8.2014 10,000 mile OCI


Be careful of the toes you step on today, as they may be connected to the ass you have to kiss tomorrow. anonymous

“Be who you are and say what you feel, because those who mind don’t matter, and those who matter won’t mind.” Dr. Seuss

What does the overboost valve look like?

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1994 S350D
1995 E300D
1997 E300D

It's a black box about 20cm on its base and 30cm vertically. It has a couple of wires and a couple of vacuum lines connected to it. It's likely the one just ahead of the windshield washer bottle on an '87 D/TD. jmbeam, only the '94 SD in your sig line has a turbo and overboost is managed by the ECU through the wastegate vacuum actuator (boo, hiss...) and a MAP sensor. The MAP sensor is the oddball Nippondenso box on the left fenderwell with a vacuum line from the intake manifold. Oddball because who expects to see Nippondenso electronics in a MB engine bay. Actually, the overboost protection solenoid is not very different from the electric engine shut-off actuator in your SD.

Sixto
87 300D^2

So my 94 S350D does not have an overboost protection valve? Is it just a coincidence that the turbo boost on this car seemed to disappear at the same time it wont shut itself off until I lift the hood and pull down the lever on the right side of the engine?

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1994 S350D
1995 E300D
1997 E300D

It could be more than a coincidence. The same engine vacuum pump supplies engine shut-off and emission control devices. The brake booster too but it has a big reservoir and check valve so it could be the last to notice a reduction in vacuum supply. No vacuum = no engine shut-off, no boost, no EGR (which also means no boost), etc.

Get your hands on a vacuum diagram, there might be one in this sticky thread, and dive into it. Without a diagram, the first place to check is right at the engine vacuum pump ahead and inboard of the power steering pump. It's driven by a cam on the IP timer so it's on the front of the engine opposite the IP. There are 2 fittings atop the pump - a big threaded fitting with the brake booster line and a small rubber hose for engine ancillaries. Engine shut-off vacuum taps into the check valve along the brake booster line. That sort of dismisses a common failure point outside the pump as the cause of both problems. Follow the big and small lines and see what you find.

Sixto
87 300D^2