89,190E ovp relay - PeachParts Mercedes-Benz Forum

gatliffe · #1 11-30-2009, 08:41 PM

Hello I having a hard time with a ovp relay at first the car stall lost all power to the fuel pump and no spark. I check anything I could check and it seem there no power to pin 15 of the ovp I try a jumper wire from a key on hot wire to pin 15, it work at first the car start and ran good but later this wire shorted out on me it seem the ovp shorted and pin 15 is hot out not in ok I have a ovp coming but what I need to know is why I not getting power to pin 15 ? I have a poor print out of a Alldata drawing it show as far as I can tell the wire to pin 15 come from the Ign Sw to a Electrical center then to the ovp. What is this Electrical center ? how can I test to see if my bug is there or in the Ign Sw ?

mbdoc · #2 12-01-2009, 09:54 AM

The electrical center is the fuse box. Power passes thru the fuse box from the ignition switch to the OVPR.

Goes in 1 connector & out another.

gatliffe · #3 12-01-2009, 10:42 AM

Thank you that what I was thinking but wasn't sure. how can I know know if I have a bad Ign sw or a bad wire in the fuse box do you have a good print out you can send me tell me the wire color and pin # at the fuse box ?

mbdoc · #4 12-01-2009, 10:59 AM

Quickest way is to just run a wire from ignition switch terminal 15 directly to the OVPR terminal 15.

gatliffe · #5 12-01-2009, 11:17 AM

Ok I would like to replace the ign sw I try to do this before but I can't see how you get to the bolt that hold it in it come in from the bottom and there no room to get in to replace just the electrical part