ABS dash lite comes on and engine speed increases?

[Rod]

Why does occassionally the ABS dash light come on, suddenly the motor races and will stay up until I turn off the engine and restart, then the ABS light is off and the engine runs normal again.

It's a 1989 S420 SEL

Thanks

[etype38]

I have the same problem. Anyone out there who can shed some light on it?

Thanks in advance.
PaulG

[sbourg]

I believe, as on our W201, that both ABS and engine management computers are powered through the OVP relay. Bad contacts in this would be my guess as to the cause.

Steve

[etype38]

My OVP relay is part # 201 540 38 45 and has 5 poles with (1) 10 amp fuse.

Fast lane shows #P2056-18126 and it has 6 poles and (2) fuses.

Anyone got a handle on which one is correct for a 90 300se?

PaulG

[mhingram]

Classic OVP, The new part does indeed have 2 fuses.
m