W126

87 300SDL suddenly won't upshift from 1st

Hey- I am new so please forgive any faux pas-After fueling up, suddenly would not upshift, but if moved to neutral after reaching shift point or higher rpm would slip into higher gears upon shifting back into D- your manuals on this subject seem to only cover diesels up to 1985- can you direct me to appropriate manual/technique/parts/etc I am guessing vacuum trouble but know nothing more on subject- thus I would also like a primer on the vacuum system in general-Thanks!

Chassis Model Number

W126

Forums

Transmission / Suspension Specific Aid

86 300sdl oily gunk in crossover and intake

I am putting in my new balanced injectors and injection pump stub shaft o-rings. I took off the crossover pipe to gain access to the third injector and just give me more room to put hard lines back in after cleaning them off course. I found that there is an oily gunk in the cross over pipe and the intake should I be worried about my turbo? I do have a small oil leak from the turbo (the only oil leak on the car) are the doughnuts bad turbo getting bad ect. Should I take the intake off and clean it and get a new intake gasket soon?

Chassis Model Number

W126

Forums

Diesel Engine Specific Aid

'85 300SD Lifeless and won't turn over

Wow! Times like these I feel really alone in rural N.W. Indiana!! I went to change the radio (cassette) to a more modern am/fm/cd Blaupunkt Saturday night. Speaker wires were the hangup and I was told I need a floating ground adapter...? I thought each speaker had both wires coming to the radio and I could connect them as such to each corresponding lead from the new radio. The "experts" said I'd fry the radio and wanted to sell me this "floating ground adapter" for $40. I didn't buy it...I re-installed the former Becker original and had to re-splice the brown ground wire as I was all set to splice and connect ASAP.

Chassis Model Number

W126

Forums

Diesel Engine Specific Aid

1983 300 SD Vacuum Problem

Had minor vacuum problems (power locks don't work) but lately, trans shifting is slow. When engine is warm and reversing from parking, I need to rev the engine a bit before it shifts into Drive. Also, it takes a little longer to shift from 3rd to 4th with motor revving a little higher and a little longer.

I went to Kent's "Diesel Vacuum Source Troubleshooting and Repair" booklet and here's what I found. The booklet suggests the vacuum to the Injection Pump Shut Off Valve be tested. My car does not have one of those!

Chassis Model Number

W126

Forums

Diesel Engine Specific Aid

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