Question about 2007 Mercury Mountaineer

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No exceleration now truck wont start

I think its a fuel problem .when I disconnected the fuel reset switch it starts then dies

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  • 338 Answers

Fuel pump relay, turning the ignition on runs the fuel pump for about two seconds to pressure the fuel rail to start, then the fuel pump relay takes over once engine is started, it relies on a signal from the ignition or ECU (to say keep running). Either the relay has gone down or the relay has lost the signal. Don't bypass the relay, it's a safety feature, to stop the fuel pump if a fuel line ruptures.

Posted on Dec 28, 2013

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Posted on Jan 02, 2017

class_of_200
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SOURCE: wont start reset fuel pump relay switch act like

common problem for a cougar try having the computer cheched for codes and have them re set if still problem then have pump checked

Posted on Dec 19, 2009

  • 946 Answers

SOURCE: starting problems

Might be your key or ignition if it has the computer chip in key to enable start-up. don-ohio

Posted on Dec 19, 2011

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