PeachParts Mercedes-Benz Forum - View Single Post - To what extent can a Bad AutoTrans feel like Engine trouble.85 300D

whunter · #4 05-17-2004, 01:11 AM

Quote:

Originally posted by Carrameow
I know my 300D has the power, it has new injectors, and once in awhile it flashes its power and moves out like a Mustang, especially at Higher Speeds.
But at start from stop, its behavior is curious and inconsistent,
Sometimes it can bolt forward, and other times, it lurches, jumps or goes real slow.
Is my transmission the real problem? Is it time.(G__ Forbid rebuilding it or can I just Flush it 2x or 3x times...) I am really starting to think the engine is Fine and its the Trans, I already tried everything from retiming the pump, cleaning the banjo fitting, turning up the anerometer--I think actually the engine is okay?
It’s just that it moves out like a Turtle at the weirdest times...

Install a vacuum gauge in your car; tap the vacuum feed line from the pump.
Make note of the vacuum reading each time the transmission is strange.
#1. You could have a vacuum pump failing.
#2. You could have a transmission vacuum modulator failing.
#3. You could have vacuum unions or lines cracking and flexing open = bleeding away vacuum.
#4. You could have a defective down shift switch.
Sorry I can't help more.
You need local hands on help.