Help ! Fuel pump won't kick on - Ford Mustang Forums : Mustang Forum
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post #1 of 3 Old 08-27-2013, 10:49 PM Thread Starter
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Question Help ! Fuel pump won't kick on

I have an 87 GT and the fuel pump will not turn on unless i bypass the relay at the relay plug. I've tried 3 different new relays. I have constant 12 volt signal at the relay plug. I also have switched 12 volt at the plug. If i bypass the relay with a jumper wire at the plug with either the constant 12 volt or switched 12 volt poles, the pump runs fine and continuously. Any ideas ? Thanks !!!

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post #2 of 3 Old 08-28-2013, 09:20 PM
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I just went through this with both my foxes.. one wouldn't prime while the other was stuck constantly priming. Remanfactured a9l fixed both cars

Originally Posted by blue93hatch View Post
I spec'd my whole build to fit a cold air intake I had
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post #3 of 3 Old 08-30-2013, 11:38 PM
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First, check these components of piping, gasoline, nozzle whether they are going smoothly. Second, check are there any places broken of the fuel pump line in each corner.
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