How do you test fuel pump relay on 88 mercedes 190e

SOURCE: 1992 190e mercedes won't start?

it sounds like your fuel distributer is clogged. Replace your fuel filter. first you can try to bleed your system. take 12mm. wrech and loosen up you lines(one at a time) and crank your engine over(with a battery charger)and force your fuel bubbles out of the lines. while the engine is cranking and the line is loose knock on the line with the wrench and you will probably see a whole buch of rust poor out of the loose fitting. do thius repeatedly untill engine fires off-then with engine running loosen up your lines and repeat if any lines loosen up and there is no idle change that means that cylender is not firing and your injecter is not working. These mechanical style injecter's take alot of pressure to open the poppet valve to spray fuel.hope I have been helpful

SOURCE: won't start

hello, first check all vacuum line,intake manifold in order ,fuel pump is working,hoping the fuel pressure is good,firing or ignition is working also,try to check your spare plug,determine the condition,have fuel or traces of ignition spark, check your excess voltage protection (relay) which supply power in engine side,located at fuse box,also you may check your fuel distributor (free up) or your injector nozzle for proper spray pattern,workshop have special tool for fuel pressure,ty

SOURCE: getting fuel, won' start

1. Check if you are getting spark from the distributor cap, if no, go to #2.
2. Check if you are getting spark from the ignition coil, if no, go to #3. If yes, your distributor cap is worn out.
3. Check if you are getting voltage to the coil, if no, it could be the ignition control unit that is faulty. If yes, your ignition coil is faulty.

SOURCE: 88 190E has been sitting for over a year, wont start

Thats not very costly the relay is cheap. The tune up you probably need is what will be costly. Coil, Cap, Rotor, Wires and plugs also maybe the OVP relay. Can you hear the fuel pumps when you try and start it? It doesnt have to turn over they should come on for a few seconds when the ignition is in the on position.

SOURCE: how to test fuel pump relay on a 93 mercedes 190e

there are 2 fuel pump relays on the mercedes so it is unlikly that they have both gone on it....check your over voltage relaytell me what happens
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