1997 Mercedes-Benz E320 Questions

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So last week, I went to my car to start it, backed out of my space and put the car in drive and pressed the gas, only have a slow crawl with no rph response.

After speaking to several mobile mechanics, 2 said it was the throttle body cable (which seems fine and I actually losened it a bit and started to run but then stopped), but one who was the car today was the throttle body and the throttle body acquator. Also today, my MM ran the codes and got P0410 (secondary air injection system malfunction), which doesn't make sense because I make sure I only use 76 gas - 93 - and regularly use a gas injection fuel cleaner (Lucas is the best!) and would not cause this interminment acceleration problem. Could the throttle body just need to be cleaned or the MAO sensor needs to be replaced?
would like to find fuel pump relay location
first noticed rattle noise under the car
My car model is E230AG My ETS ,ABS and low break light will on when i am on the road. Sometime the car refuse to move, sometime its move but in low gear.Sometime its run perfectly. Can anyone give me some advice? thankyou
When car warms up the sound goes away.
daily when first driving car for the day
both key wont turn they are stuck about a week ago one set of keys were sticking my wife ,had to ture the streeing wheel to get it to turn over now both keys wont turn and don't know what to do should I replace the ignition lock
Gear shaft replaced transmission pan removed
the car does not make any noise or show any signs of problems but the engine light came on and mechanic tells me i need new relay and air pump. The car has 180,000 miles.
There is no voltage going to the connector. I'd like to know if this connector is goes through a fuse someplace which I could not find.
my car chocks like as if it wants to not go sometimes the rpms go sky high when im aruond town stopping and going through town this all happens at the same time my check engine light comes on and i also get check engine electronics please contact me at 559 631-8744 my name is dee thanks
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