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The mkiv Supra Owners Club

HELP - Car won't start


supra-ireland

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Start with the fuel pump power to and resistance through.

 

Testing the Supra fuel pump internal resistance Once you have access to your fuel pump assembly (under the boot area tank cover), you’ll be using your multimeter to check the function or the internal resistance of the pump. Put your digital multimeter dial to read resistance or OHMS mode, and you’ll be gentle probing PIN 4 and PIN 5. These are the bottom pins, and don’t forget if you have this Supra pump swapped into another vehicle simply probe the two pins at the pump itself. The resistance you are looking for here is between 0.1-3.0 Ω of resistance. If your Supra fuel pump does not return an internal resistance within this range, it’s gone bad.
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