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1993 Mercedes-Benz 400SEL Questions

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engine turns over 5 sec before starting
Car will not back up.
Key can be turned to position 1 and back to position 0 but it will not pull out nor will it turn to start the car.
Stereo 's player and amp all unplugged, no key in the ignition and crackling noise continues very loudly.
I was having some trouble with the PSE pump, apparently there was a leak in the actuators (driver side). I disconnected it so the pump wouldnt burn out. Shortly after that ive been having these annoying hesiations and loss of power while driving. Im hoping once i replace the damaged doorlock actuators, reconnecting the PSE pump, it'll solve that problem. Could it be something else? Thank you.
Car ran just fine before this happened. Thanks in advance
ok hello i have a 1993 400sel it has a problem with spark plugs, I replaced with new ones and the car is backfiring. i used ngk preset spark plugs, it was running fine for a few days when i was driving it around the block, but now it has began backfiring and will not fully start... I just bought the car by the way, please help, THANKS
sometimes they work and at times do not work.
The high beam is working.
how can I check ,fuse ok, how do I jump compressor, Help
when the air cond is on it blows cold air for a little while and then it blows hot and cold air.
I dont need the power steering pump just a new hose.
My car hesitates in drive but runs fine in park and the transmission is fine. What could cause this problem when the transmission is perfectly fine?
How do I adjust the windshield wiper arms? The divers side keeps banging when going back to the parked position.
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