fuel pump problem

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07bluerocketZ
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Joined: Thu Feb 14, 2008 12:13 pm

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i have a boosted 95 s14 with the stock ka motor...it has a walbro fuel pump...but for some reason there is no power going to the fuel pump at all(no power in the plug to the fuel pump connections).the actual pump is working like new...what do you think it could be?i checked the fuses and they are all good..a friend told me it could be a fuel pump relay...want to make sure what everyone else thinks..thanks...


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esahuque
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Car: 95 240sx KA-T, 04 frontier

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take a small piece of wire and put male connectors on both ends then remove the fuel pump relay and use the wire to jump the connections. turn the key on, if your pump comes on replace the relay with a new one.

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07bluerocketZ
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i dont want myself to feel dumb,but before i start taking a wrong relay off,where is the fuel pump relay exactly at???any advice would be very appreciated...thanks

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esahuque
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Car: 95 240sx KA-T, 04 frontier

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driver side kick panel, next to the fuses. its one of the two blue relays.

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07bluerocketZ
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one of the two blue right???

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esahuque
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yep one of the two blues, cant remember which one though

r3v_v3ng3
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Car: 91 fastback ka-t

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07bluerocketZ wrote:i have a boosted 95 s14 with the stock ka motor...it has a walbro fuel pump...but for some reason there is no power going to the fuel pump at all(no power in the plug to the fuel pump connections).the actual pump is working like new...what do you think it could be?i checked the fuses and they are all good..a friend told me it could be a fuel pump relay...want to make sure what everyone else thinks..thanks...
did you do the electric fan setup and used the fuel pump fuse to trigger it?

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07bluerocketZ
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no,i was using the stock fan since its a fan clutch kind of fan...there are 4 blue relays behind the kick panel...i need help

bruinbear714
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There is a fuel pump signal coming off the ECU to trigger the relay. Make sure that's putting out the right signals first as nothing else will work if that signal is dead

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07bluerocketZ
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theres power coming out where all the blue relays are at...any suggestions?thanks

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WDRacing
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Car: 95 240SX, 99 BMW 540i, 01 Chevy Express, 14 Ford Escape
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If you don't have a Multimeter stop whatever you're doing and go buy one. At Harbor Freight they are like 20 bucks. Then check power starting at the relay, then leaving the relay, then at the pump itself. If you have voltage everywhere then your pump is bad.

Just for s***s and giggles though, take the fuel pump relay out and swap in another one. Any relay of the same amperage will work, so snag one from under the hood, inside a panel, your wife/brother/mothers car...lol. You get the point

I have always found it easiest to try a new fuse/relay real quick.

BUT

If you have a bad ground, chaffing wire, whatever...the new relay/fuse will pop as soon as power is applied to it. Sometimes relays and fuses just crap out, sometimes there is an underlying issue. So whatever the fix does end up being, try to find out what caused the original issue. This goes doubly when we're chasing electrical gremlins. Fire is bad

EDIT*

You have a boosted S14 and a 350Z? Very nice...I'm admittedly jealous. So much as to want you to go through 5-6 relays just because...lol.

WD

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07bluerocketZ
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Joined: Thu Feb 14, 2008 12:13 pm

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im gonna go get a new relay at autozone or something and just try to see if anything changes...and yea i got a z and an s14.i thought i was going to lose the z but i got a good job so i ended up keeping it.lol.and i sold the bolt ons it had.once i get the s14 running im going to let my wife drive it cuz i promised.lol.and im going to drive my 88 integra with a 97' type r motor and put the z in the garage to start taking it apart to go turbo too...


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