For about 10 miles today, my ML350 would alternately limp along (minimal juice when I accelerated) &spurt back tonormal power. It would go back into limp powermode each time I reaccelerated after taking my foot off the gas. Once stopped at my destination, it did not repeat the limp power problem on the way home. Does anyone know what is wrong?

 

sounds like maybe a throttle pedal postion sensor.

 

First step. Any codes stored? get the ECU scanned.
Stuart.

 

First step. Any codes stored? Get the ECU scanned.
Stuart.

 

You were right. Thank you. $540 fixed it @ So Ca MBZ Dealer.

 

cool, lets give it some time and see if it really is the fix.