Mercedes-Benz Forum banner

1 - 7 of 7 Posts

·
Registered
1995 C220
Joined
·
4 Posts
Discussion Starter #1
I just recently purchased a cherry looking 1995 MB C220 but with a couple of mechanical issues that i took care of myself. After purchase I replaced the throttle actuator, maf, fuel filter, pump and hose. Replaced all vacuum hoses, changed oil and slapped on a set of new tires. Now I'm not getting any trouble codes now but before I had a maf TC and a knock sensor TC. Main reason I replaced the the TA and maf was that I was told that the old parts were causing a condition that prevented speeds over 70 mph. Well still has the problem, it will not climb above 70 mph. Has anyone had this problem?
 

·
Registered
1995 C220
Joined
·
4 Posts
Discussion Starter #3
It just won't go past 70 mph, engine still running, rpm's start to shoot up and come down but it will not advance past that speed.
 

·
Registered
1995 W140 S320 LWB, 1983 w126 280SE Euro
Joined
·
111 Posts
wow thats different, :surrender: never heard of that before, and same this was happening before the throttle body work? i hope someone can help with this.
 

·
Registered
2000 ML320, 2008 ML63
Joined
·
54 Posts
When I saw you said rpm's go up but no speed different I thought of the time my clutch went out, same thing happened and on the higher gears. Maybe it's the last gears not engaging properly or slipping. I'm not a mechanic just a thought. Have you done any tune ups? Plugs, trans fluid, etc?
 

·
Registered
1995 C220
Joined
·
4 Posts
Discussion Starter #6
The plugs were done by previous owner right before I bought it. Engine is smooth, transmission shifts smooth and quiet. Upon wide open throttle from a standstill the engine and transmission propel the car quite well until 70 mph were it just will not go beyond that speed. Like a speed limiter of sorts. I'm guessing the cars computer must be setting a limiter due to some sensor or signal from something that may be off or not functioning.
 

·
Registered
1996 C280 Sport
Joined
·
321 Posts
Could it be that the speedometer stick gets stuck at 70 and you just dont realize your going faster. This is a really odd incident. I'd bring a 6 pack to a mechanic at the dealership and ask them what they might think it is :)
 
1 - 7 of 7 Posts
Top