1997 Mercedes-Benz E320 Questions

All 1997 Mercedes-Benz E320 Questions

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I check the brake pad they are good all springs are good, parking brake is off
I had the timing chain tensioner changed twice ,the problem went away for a short while and then came back,it is noticeable when the car is at an idle. How do i fix this ?
I have the fault codes:po753-758-763-743.what my next step can be;
i checked the solenoids are working,but it want shift,and still gives me the codes for solenoids.do i have to reprogram it at the dealer,or there another to reprogram it by my self.
How can I clear these codes so the transmission will shift?
Heater blower does not work. When you turn on heater it appears that water or mist emits from under hood. AC does not work either.