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K11 General Discussion
Fuel pump out of power
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<blockquote data-quote="fuzzy-hair-man" data-source="post: 783180" data-attributes="member: 15746"><p>Afaik there is no electrical fuel pressure cut out just goes into the rail and is returned to the tank if not required using the mechanical fuel pressure regulator on the end of the rail. What I think you're confusing is the cut off after you turn the ignition on the fuel pump primes and will then switch off, this is a timer that switches off after a set time if the car is not started.</p><p>Given the symptoms I'd be checking the fuel pump fuse then that the fuel pump relay is clicking on and finally that there's a signal from the ECU to the relay, I think out might be switched on earth similar to the injectors so there should be 12v at the signal but the pump won't run as it's not earthed via the ECU.</p></blockquote><p></p>
[QUOTE="fuzzy-hair-man, post: 783180, member: 15746"] Afaik there is no electrical fuel pressure cut out just goes into the rail and is returned to the tank if not required using the mechanical fuel pressure regulator on the end of the rail. What I think you're confusing is the cut off after you turn the ignition on the fuel pump primes and will then switch off, this is a timer that switches off after a set time if the car is not started. Given the symptoms I'd be checking the fuel pump fuse then that the fuel pump relay is clicking on and finally that there's a signal from the ECU to the relay, I think out might be switched on earth similar to the injectors so there should be 12v at the signal but the pump won't run as it's not earthed via the ECU. [/QUOTE]
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Fuel pump out of power
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