Mechanics

MERCEDES BENZ 190E FUEL PUMP PROBLEM

1986 Mercedes Benz 190e • 235,000 miles

I just replaced the fuel pump on my mercedes 190e and im still not getting the fuel pump to turn on with the ignition. How do I locate and test the relay for my problems?
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Erniefarris
November 23, 2012.



I located mine on a 190E below the windshield, under the hood, on the passenger side, in board of the battery. There were 2 together in a relay center outboard of the fuel computer. One said KLIMA and the other said konstaadt or something on it. The f/p was behind the klima and the ovp was an aluminum tower shape with a red top containing a 10 amp atc fuse. Autohaus sells a kit for test jump which eliminates the relay during testing. Its cheap. And it took a day or two. But my chevy runs great when I go to the wrecking yard to find expensive german parts to try. For cheap.

Tiny
Dan lincoln
Dec 3, 2012.
Oh, the tests. I went to the public library and they offered a mitchell database. It included the test procedure, jumping the relay pins and gave illustrations. I also had a chance to consult bulletins and recalls info for my vehicle. The component locator was sorta vague and pics are a little ambiguous. Once I located the ovp relay, I just went to the two nearby. Printing a schematic came from a haynes manual they had. 10 cents a page for printing. Couldnt take the paper book out in the rain. DVOM and test light came from harbor freight tools. Relays, if found faulty, are repairable to a small extent but they are available on ebay for less than $35. Looking at the pics on there can help locate and identify the parts. Theres also mercedes info sheets called startekinfo. Ask the librarian. Or you can google it

Tiny
Dan lincoln
Dec 3, 2012.