Welcome to Ultimate Subaru Message Board, my lurker friend!
|Welcome to Ultimate Subaru Message Board, an unparalleled Subaru community full of the greatest Subaru gurus and modders on the planet! We offer technical information and discussion about all things Subaru, the best and most popular all wheel drive vehicles ever created.
We offer all this information for free to everyone, even lurkers like you! All we ask in return is that you sign up and give back some of what you get out - without our awesome registered users none of this would be possible! Plus, you get way more great stuff as a member! Lurk to lose, participate to WIN*!
* The joy of participation and being generally awesome constitutes winning
** Not an actual guarantee, but seriously, you probably won't regret it!
Serving the Subaru Community since May 18th, 1998!
svx fuel pump issues
Posted 27 April 2012 - 04:01 PM
Posted 27 April 2012 - 05:34 PM
volts is very low like .3
edit: when i unplug the fuel pump, and read the volts coming from the cars wires, its 6 volts.
is the pump bad?
Edited by K9WAGON, 27 April 2012 - 06:03 PM.
Posted 27 April 2012 - 10:04 PM
and identical voltage at the blue wire on the pump.
bypassing the fuel pump modulator has no effect on the voltage of the blue wires (the short one inbetween the pump and relay in the diagram)
Edited by K9WAGON, 28 April 2012 - 03:43 AM.
Posted 28 April 2012 - 10:15 AM
Posted 28 April 2012 - 07:44 PM
In the hundreds of fuel related diagnostics I have done on Subaru vehicles-old, new, etc.
Almost 0 failure rate of the actual relay unless its in a converted car (Ej22 swap, Vanagon conversion, etc).
Almost 99 percent failure of the fuel pump itself.
Maybe 1 percent is the fuel filter is completely clogged. Mostly old cars ---with a carburetor.
If the pump is bad-replace the strainer on the pump (usually required to keep the warranty from the manufacturer) and the fuel filter.
Posted 29 April 2012 - 10:02 PM
Posted 29 April 2012 - 11:37 PM
i wish, but no it turns over fine and sounds like its getting great compression on all 6, I'm not even sure if the injectors are firing. the fuel pump relay isn't working, I've tried 4 others and still the same. When I hook a volt meter to the blue wire on the FP relay(supposed to be switched 12v with the key) it has no voltage at all. if i power it with 12 volts the fuel pump kicks on.
the yellow wire thats connected to the relay is getting 12 volts. so is the black, and so is the green.
Posted 30 April 2012 - 09:58 AM
Posted 01 May 2012 - 09:56 AM
Posted 01 May 2012 - 10:00 AM
Posted 02 May 2012 - 10:01 AM
0 user(s) are reading this topic
0 members, 0 guests, 0 anonymous users