91 Mercedes 190E 2.3 Idle problems

 Air Cleaner Housing removal  Clean the throttle body, plate, and butterfly if possible. Check the breather hose branch type under the air cleaner assembly for cracks and broken plastic insert. If this hose is broken, the car won’t start. PUT BACK EVERYTHING AND THE IDLE IS GREAT!!!!!!!!!!!!!! SOLID AT ANY CONDITION!!!!

A8 D2 Lower Control Arm Replacement

This was the way I did mine, please use the information below as reference only and be safe.  When the car makes squeaky noise while driving at very low speed, parking lot or over bumps, it’s normally the ball joint of this straight arm being loose. I replaced the curved arm, it didn’t fix the

A8 Upper Control Arm Replacement

This was the way I did mine, please use the below information as reference only and be safe. The upper Control arms start to loosen when my car hit 120k+, they make clunking noise when you back up while turning, and my car feels loose when you go over bumps. It took me 5 hours