Nice video !! I have a USA version 1994 C280 Benz. The cars idle has become very erratic. At stop lights, while in drive, the car engine revs up and down as if you were trying to tempt the car next to you to drag race. Once you accelerate away from a stop, the car drives perfectly, accelerates great, and no other known problems. I believe the throttle body or throttle position sensor is at fault. I wonder if you have an opinion?? Because the car is pre OBD2 I don't think scanning the car's computer will yield anything. Were you able to find any internal components for your position sensor to repair yours ?? Thanks !
update on my fix (i dont know when it will last... lol) i suspected that the ECU is trying to compensate with some logic on it, and it seems related with the air/fuel ratio... so what i did was simple turn the CO potentiometer clockwise around 270 degree and making it running more lean. I also fixed some small air leaks into my throttle body :-D. And of course resetting the ECU is needed by simply disconnecting the battery and reconnect. Hope this help... :-D
@@mercow1242 yes it worked for me. But ever since I've overhauled my transmission (722.4), this problem never show up. Fyi, my 722.4 was near totaled, thank God I've overhauled that just before it destroyed :lol:
I need wiring color combination i have black, brown, red, white, yellow, grey, green , red brown, in throttle actuator but in my engine connector harness there is black, white, yellow, brown, blue, purple, red brown, red. I want to connect it proper let me know which of these wires colors correctly.
I admire your understanding of the TB system. Thanks for posting this video on youtube.😊😊😊
Nice video !! I have a USA version 1994 C280 Benz. The cars idle has become very erratic. At stop lights, while in drive, the car engine revs up and down as if you were trying to tempt the car next to you to drag race. Once you accelerate away from a stop, the car drives perfectly, accelerates great, and no other known problems. I believe the throttle body or throttle position sensor is at fault. I wonder if you have an opinion?? Because the car is pre OBD2 I don't think scanning the car's computer will yield anything. Were you able to find any internal components for your position sensor to repair yours ?? Thanks !
Same case here... mine is C180 W202 pre obd2.... any update on the fix?
update on my fix (i dont know when it will last... lol) i suspected that the ECU is trying to compensate with some logic on it, and it seems related with the air/fuel ratio... so what i did was simple turn the CO potentiometer clockwise around 270 degree and making it running more lean. I also fixed some small air leaks into my throttle body :-D. And of course resetting the ECU is needed by simply disconnecting the battery and reconnect. Hope this help... :-D
@@Wu11er fixed?
@@mercow1242 yes it worked for me. But ever since I've overhauled my transmission (722.4), this problem never show up. Fyi, my 722.4 was near totaled, thank God I've overhauled that just before it destroyed :lol:
Can that worn spot be changed moved more up or down without affecting throttle idling?
I need wiring color combination i have black, brown, red, white, yellow, grey, green , red brown, in throttle actuator but in my engine connector harness there is black, white, yellow, brown, blue, purple, red brown, red. I want to connect it proper let me know which of these wires colors correctly.
Is there a certain code you get?
Yes, P0220 or P0120, and/or both could be present depending on how worn the internal components are.