power to fuel pump relay 91 190E - PeachParts Mercedes-Benz Forum

just-n-time · #1 03-13-2012, 10:31 AM

Quote:

Originally Posted by mbdoc

jnt,

There isn't a seperate fuel pump relay on a 1991 car.

Like I suggested, the fuel pump is done thru the MAS relay, jump pins #1 to #2 and the pumps should run.

thanks doc, will check the harness today. need to figure out why it lost power to the pumps. by the by i did power #2 and the pumps are good.

just-n-time · #2 03-13-2012, 01:27 PM

Quote:

Originally Posted by just-n-time

thanks doc, will check the harness today. need to figure out why it lost power to the pumps. by the by i did power #2 and the pumps are good.

Testing the Harness On testing I found that power was at #30 using the harness ground I had power at the 30 post no other poles had power. But when I use a jumper to the OVP at pole 15 I had power to post30 and 31, in my thoughts I have power to ground is this wrong or is the OVP shorted? No power has gone to poles 87 when jumper is used.

the test for key off was as stated with key on I had power to post 15.