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Auto Repair : How to Check a Fuel Pump Relay

A fuel pump relay’s job is to take some of the voltage load off of the wiring harness to allow a better current flow from the battery to the fuel pump. Determine whether a fuel pump relay is bad and needs to be replaced with help from an auto mechanic in this free video on testing car performance. Expert: JB Hebert Contact: Bio: JB Hebert is a machinist, metal fabricator, and auto mechanic who has been fixing and modifying all things mechanical for over 20 years. Filmmaker: David Pakman

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6 Responses to “Auto Repair : How to Check a Fuel Pump Relay”

  1. gst69man says:

    very helpful. GOod vid. thanks

  2. paulj0557 says:

    True that the fuel pump takes a good amount of current, but not so much so that it necessarily warrants the need for a relay. The more modern purpose for a relay in line with the fuel system is to disengage power in case of an accident. The cars main computer is the link between that relay and the fuel pump.
    If ever you inadvertently short + or – where it shouldn’t in this relay/computer connection and you can’t afford a new computer simply bypass to another key switched + temporarily.

  3. ozwayya says:

    nice vids

  4. PaCPoD69 says:

    5 stars, keyword how to test a Relay..

  5. crrazyy says:

    and I believe pulling it out with the car key on,engine off, u will here that click sound if the relay is good.

  6. caganb says:

    Isn’t a relay just a bigger switch?

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