w124 wont start

[jason mcavoy]

engine refuses to start,will fire up on the first few turnes of the starter also the abs light will flicker once when cranking.fuel presure good and plenty of strong spark at coil.tried bypassing the ovp relay but still the same.the car has been playing up for a while by unsable idle and surging at cruising speed under slight load.

 

[mjtray]

Really does sound like a duff OVP relay.....surging, bad idle and ABS light coming on are classic OVP problems.

Because the OVP breaks down randomly it can cause all sorts of problems which are hard to detect.

If yours is still the original, I would change it for the sake of £45 or so. Dead easy to replace.

The originals had "Made in Austria" on them.

Good luck.

 

[Mikesmerc]

Could you tell me where the OVP relay is located on a 124 MJ? Have looked for it but cant find it , has it got a fues on top?
Sorry for butting in
Regards
Mike

 

[Mick J]

I'd like to know where the OVP relay is. I've got similar problems on my E220 [1994] I posted the problem a while back as 124 rough starting but got no replies.This might be the answer to my problem as well.

 

[jason mcavoy]

w124 non start

removed metering head and valve sprayed carburettor cleaner in metering valve.refitted head now she starts and runs okay,will a faulty ovp relay cause non start do you think?

 

[justin1820]

its behind the battery in front of the control units depending on age of vehicle and ignition type, it does hve a fuse on top and a nice little plastic lid

 

[Mikesmerc]

Thanks Justin,
I looked behind the plastic cover behind the battery but didnt seem to be there but will look in daylight tomorrow. 1988 230E
Regards
Mike

 

[Ade]

Mike

It's under a black plastic cover nearest the wing at the end of the ECU

Hope this helps

Ade

 

[Martins Strazds]

Hi! Is it possible that this thing goes out of order ~ once in 2 or 3 weeks??? And after I leave it for some 10 hours its starts as nothing have been... or is it something else?
Thanks!

 

[Mikesmerc]

Found the OVP relay at lunch time where everyone said it was but hidden under a black plastic cover as Ade says. Fuse not blown though.
Regards
Mike