Hi guys, I'm pretty new to this forum I have had a 1992 300sd for a couple of years now, and lately I loose power at about the 3000rpm range. This happens on and off, I assume that this is the turbo. Thanks in advance for any help

get a new air filter and fuel filter

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1985 300D - 599,xxxk - blue interior #265 Monark Nozzle, AL129X, 15" Ronals, Gen II Big Brakes hunting
1985 300D - 491,xxxk - in prog-{A-A IC, 3" exhaust, psi\pyro, 28*BTDC, Hella Euros, IP Limiter removal
1985 300TD - 783,xxxk - parts car,used new engine with ALDA cap inplace
1987 Kenworth T-600 8LL 425 CAT Mech. - 6,000,000+k - DEI exhaust wrap, punched through resonators, 1 recent rebuild,

On the 603 series engines there is a boost air line that triggers a device called an ALDA to give the engine more fuel when the turbo is spooled up. This line gets plugged and will need cleaning. Also in this path is an overboost relay that sometimes clogs.

On the 87 SDL I had cleaning this line took the car from 0-60 in 19 seconds to 12 seconds. It felt like the turbo wasn't working, it was with no extra fuel.

This is a pretty easy check, and hopefully an easy fix.

Chuck

thanks, I will check that, what exactly does it look like?

http://www.detali.ru/cat/oem_mb1.asp?TP=1&F=140134&VIN=

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Terry Allison
N. Calif. & Boca Chica, Panama

09' E320 Bluetec 77k (USA)
09' Hyundai Santa Fe Diesel 48k (S.A.)

thanks

You've also got an early version of a Mass Air Sensor. The "no power above above 3k rpm" sounds suspicious.

http://www.detali.ru/cat/oem_mb2.asp?TP=1&F=140134&M=603%2E971&GA=722%2E367&CT=M&cat=503&SID=09&SGR=045&SGN=02

Where's "Sixto" been lately?

__________________
Terry Allison
N. Calif. & Boca Chica, Panama

09' E320 Bluetec 77k (USA)
09' Hyundai Santa Fe Diesel 48k (S.A.)