I've had the strangest problem I have ever experienced. It started when I
made a right turn and it suddenly felt that the motor had cut out, except I
still had power steering and brakes and the rpm's were about 1,500. The car
simply would not accelerate. It was at idle RPM's but stepping on the gas
pedal had almost no resulteven though the motor was running . It then
started to accelerate normally.
Yesterday, several weeks later, I was driving down the road when it started
doing the same thing. Even though I was on a 55mph road, the car simply
stopped accelerating as I was in the left lane passing a car in the right..
Since I was going about 60 I put it into Neutral but it still wouldn't
accelerate but it was running. The car continued to roll down the road so I
tried to get in the right lane. In doing so I could see the car would
accelerate very very slowly but while in Neutral as the rpm's very slowly
increased, at around 4200 rpm,s the engine started to misfire. I switched
through all the forward gears including Neutral but no acceleration but the
motor was idling fine and smooth; also there was no passing gear. As I let
the engine drop in rpm's it smoothed out again but with still virtually no
acceleration. After turning it off and letting it set for about 1 hr. it
started perfectly and accelerated perfectly all the way home.
It is obviously dangerous in this condition and I just had it towed the the
local MB dealer. I even checked to see if something was blocking the
tailpipe but it was clear.
Does anyone have any idea what is happening? The screen says "no
malfunctions", the car starts perfectly and runs properly - most of the
time - just this intermittent No Acceleration.
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