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#1
09-16-2009, 05:21 PM
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1998 E300D Turbo Problem.
I just got a 1998E300D and was driving it on about a 4 hour trip about 3 hours into the trip as I began to go up a large incline, the check engine light came on and right away I noticed a huge loss in power, the car wouldn't get over 60mph the whole way up the hill. I could tell a large difference in power once I got to the top of the grade. I pulled off the highway and had it checked and the code Turbo/Wastegate soleniod malfunction came up. Is this a simple fix? Anyone have a pic of what the part looks like? Any idea on cost? Thanks for your help.
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#2
09-16-2009, 05:22 PM
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I can't feel the turbo kick in any longer. Is this going to hurt the car to drive it back home like this?
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#3
09-16-2009, 05:38 PM
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There are two electromagnetic solenoids that are identical, one controls the wastegate and the other the egr vlave.
The turbo one is beneath the air filter box unter the 4" outlet pipe. The EGR one is on the drivers fender next to the ABS. Swap them; noting in and out vacuum line setup first. No tools required. If it resolves the problem the one controling the turbo is prob bad. Costs approx $100. Usually clearing the code brings the trubo back instantly; until it trips again. If it doesnt resolve it, PM me your email addy and I'll send you the ECU voltage and vacuum tests to slueth it out further.
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Terry Allison N. Calif. & Boca Chica, Panama 09' E320 Bluetec 77k (USA) 09' Hyundai Santa Fe Diesel 48k (S.A.) Last edited by TMAllison; 09-16-2009 at 05:43 PM.
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#4
09-16-2009, 05:50 PM
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Terry is right, but also replace the little filters on the ends of the bleed lines for those solenoids too. I had one which was tripping a CEL and after changing it, it never happened again. Usually these manifest themselves when the weather turns cold for some reason too.
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Marty D. 2013 C300 4Matic 1984 BMW 733i 2013 Lincoln MKz 
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#5
09-16-2009, 05:51 PM
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Quote:
No, it is in a mode to protect the car from overboost, you can drive it like that.
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Marty D. 2013 C300 4Matic 1984 BMW 733i 2013 Lincoln MKz
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#6
09-16-2009, 05:58 PM
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Watch the temp gauge if you are in the mountains and its hot. You don't/can't push it.
The turbo filter NHDOC mentioned is also worht checking. That one is tucked in the computer box next to the inner fair wall. Its usually yellow about 1" x 1" or so. Its connected to a vacuum line leading under the air filter box and down to the solenoid.
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Terry Allison N. Calif. & Boca Chica, Panama 09' E320 Bluetec 77k (USA) 09' Hyundai Santa Fe Diesel 48k (S.A.)
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#7
09-16-2009, 06:48 PM
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Transducers
Under the air filter hose (controls waste gate)
 Closer look  Driver side transducer (controls EGR)  Removed from it's holder (just pulls up and off)  Electrical connector disconnects by pressing on the bottom of the clip(where my thumb is)  atmospheric vent filter 
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1999 E300DT (131,800) 154,000 Black on Black  SOLD2006 CLK 500 coupe Capri Blue on Grey (zoom,zoom)  47,000mi 04 VW TDI Passat 80,000mi (Techno) How to eliminate oil dependency through market-driven approaches. “We could cut oil use in half by 2025, and by 2040, oil use could be zero,” The Sound of Diesel Speed Ode to MB
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