Fuel Pump Voltage
28 August 2006, 07:17 PM
#1
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Fuel Pump Voltage
Can someone tell me if the fuel pump receives different voltages depending on the state the car is in? My fuel pump isnt priming, i can hear the relay clicking and iv checked the voltage at the pump itself... it gets a prime voltage of between 4v and 8v. This doesnt to move the pump at all.
I have connected the pump direct to a 12v supply and it spins. Im sure i read somewhere that on startup it only receieves 33%... is this controlled by the voltage input?
I have connected the pump direct to a 12v supply and it spins. Im sure i read somewhere that on startup it only receieves 33%... is this controlled by the voltage input?
28 August 2006, 08:29 PM
#2
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New age cars have a fuel pump controller, on initial start its 100% duty, then drops to 33% after a short period.
However if you have an older car (MY00 back) then the pump just runs at 12v all the time.
bob
However if you have an older car (MY00 back) then the pump just runs at 12v all the time.
bob
28 August 2006, 08:35 PM
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its a my99 turbo wagon. the plugs under the seat in the back are all fine, any other reason there could be for it not gettin the full 12v?
Last edited by Joely P; 28 August 2006 at 08:41 PM.
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