Acceleration problem 1989 190E

[raeanncherry]

Hi all,
I have a 190E (automatic) and am having some issues with acceleration and the speedometer. If I am in town at low speeds, there is some shuddering or roughness at low speeds and it won't accelerate even with the gas pedal is on the floor--does fine at higher speeds. Also, the speedometer needle either doesn't work at all or jumps around all over the place. Any help would be appreciated.

Thanks,
RaeAnn

[mfagus]

when was the last time car was tuned and fuel filter changed?

[lurk3r]

Just had this, engine runs fine fast, won't come off idle ... fuel pump relay has a fuse on it, right in behind the battery.

[Fix The Wire]

Ask your workshop to check the OVP - Over Voltage Protection Relay.
That give lot of trouble after a while.