I have a 92 400E and just got the oil changed (every 10000 miles), the engine steam cleaned, the brakes bled, power steering refilled, and alignment and balancing done. After I got it back, the car has started to idle very rough and cut out on acceleration. When I press the gas when I am stationary the car feels like it does not register on the throttle and nothing happens. Then it will kick in and accelerate very roughly. It is very annoying and I want to know what is causing it. I don't want to drive it because it feels like something will break if I do. I think it is the oxygen sensor but I am not sure. Maybe when the dealer steam cleaned it something got knocked loose or broke. If it is something easy like that or if someone had a similar problem, could you help me out? That would be great.

 

Wow I always love a forum that knows their stuff and cares about members. It brings a tear to my eye...

 

Something could have gotten knocked loose. Especially the ignition timing. Check your distributor cap and such, replace as needed. Try doing a general tune-up. Such as replacing distributor cap and rotor, spark plugs, plug wires, etc. Some shops can be careless around electronics, they may have hit the cap and cracked it, or got moisture in the cap and corroded the contact points and such. Its a safe place to start diagnosing.

 

a 400e 92 and was told i need a m16 throttle elec motor that is 1250 for part ,looking for a good used one now