Question about 1994 Volvo 940

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My car turned off on me one day while I was driving and I havnt been able to start it since. I been told by a few people that it mite b the fuel pump. What is the difference between the fuel pump and the relay.

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The relay is basically a switch a low voltage/amperage input energizes a electromagnet that brings high voltage/amperage contacts together
so the computer a low amperage device triggers the relay to give power to the fuel pump
there is also a collision/rollover fuel cut off switch , a hard jolt(a PA pot hole) a curb or a big amp and a sub-woffer can set them off. check your owners manual for location

Posted on Nov 12, 2009

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The pump is what pumps the fuel the relay id=s what send the power to the pump. check your fuel pressure.

Posted on Nov 12, 2009

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