acceleration

[jim Thornton]

I have a c240 1998, v 6, the car seems to want to accelerate on its own if I hold the throttle at fifty mph for a while she will creep up to sixty if I blip the throttle she will stay there apart from this runs fine , hoping some knowledgeable member can help me.

 

[kid-jensen]

What happens if you set the cruise to 50MPH, does it still accelerate?

 

[jim Thornton]

I have a c240 1998, v 6, the car seems to want to accelerate on its own if I hold the throttle at fifty mph for a while she will creep up to sixty if I blip the throttle she will stay there apart from this runs fine , hoping some knowledgeable member can help me.

No Paul goes as normal

 

[kid-jensen]

Well, whatever the Cruise control is doing, you should be doing that too!

Why can't you just back off the accelerator? After-all, maintaining speed is a closed-loop system, you close the loop by adjusting the accelerator to maintain a fixed speed, which will need constant corrections if it's to be done accurately (which is why nobody does).

I suspect there's nothing wrong, just the charisteristics of the engine's power delivery.. carry-on closing that loop and you can manitain 50MPH all day....

 

[jim Thornton]

I gave the maf sensor a good clean also cleaned the pipework with a carburetor cleaner made a difference,ill give it a trial run later.thanks Paul.