1996 Mercedes-Benz C220 Questions

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Recently installed used engine

thats all i need to say

Car had been sitting awaiting new battery which I got.Neighbor said gas was old and something called seafoam was added.Car srove to work fine but after 12hr shift on way home unbearable alarm went off about 10min then stopped

I opened my trunk one day without opening car and now my car only locks using key in trunk. My keys do work to unlock and turn car on, they just won't lock car.

speedometer cluster not working

took it to a special shop for diagnosis he made it worse seven codes jumped up he said sorry cant fix your car.He literally threw me out.

Sometimes when I start the car all the instructment cluster work and then they will just stop working

Ok so if i turn my heat on i hear a noise under the pass side however no heat blows out unless im driving and i presume thatas the hear coming off of the engine. I bought a new blower motor but i want to ensure thats the issue. Also if anyone has any instructions on how to install i was told it was fairly easy.

ok next thing my gas needle does not work all the time.
the cruise control dosent work anymore

lastly what type of oil do i put in it. i actually went to the dealer and they said 10w30 during the winter becasue its not as thick.. however, they couldnt tell me for sure.

any assistance is appreciated

I have a new compressor ready to go in, but I was curious to see if it was something more simple wrong before I install it. The system is completely charged but the AC clutch will not engage. I put a gauge on the low pressure side and it pegged the needle past the red zone side. Could it be a bad clutch or a relay or something else. Please advise. Thanks for your your help.

Hello. Again, I have a 1996 mercedes benz C220. It has 250,000 miles on it. And its fan belt keeps coming off. I thought it might have been the belt; so I purchased a new one. And then I put it back on; but it came off again within few seconds. Can someone tell me how I can fix this? Please? Thank you very much.

Catalyst, egr and 2nd air are the 3 test the computers not performing, on a 1996 there can only be 2. Ive tried the drive cycle a couple times but its still not passing.i need to smog vehicle. What can I do?

temp gauge shows normal temp 60%, pegs out in red or a little below 120c 40% of running time. When 120c or in red, front 2 fans run and a/c temp gets warm, but motor temp shoes normal with laser temp gauge. Have replaced 2 temp sensors and related parts. I think there is a short between gauge and sensor. No rime or reason to when it acts up, cold- hot - wet - dry, etc. help

It reverses just fine but in drive it has a harder time and I feel like the gears are not grabbing.