fuel pump prob?!?!? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

s14jesse · 08-30-2008, 11:06 AM

S14 SR20det redtop

i checked all the relays and fuses on the car and they all worked fine i took out the fuel pump and i tested it with a battery and it worked fine i put evrything back together and my car wont start.
so far what i noticed is that i have no power going to the fuel pump cuzwhen i turn the power on the fuel pump wont turn on for a sec as it should
once agin im clueless all the relays and fuses r fine but when i checked the power plug from the fuel pump my test light shows theres no power going to it at all so does anybody have an idea y its doing that?

THANKS A LOT FOR THOSE WHO R HELPING ME!

UNISA JECS · 08-30-2008, 11:10 AM

Just becuase you test the fuel pump with power and it spins doesn't mean its good, you need to test it with a fuel pressure gauge.

JVD · 08-30-2008, 02:40 PM

See if you have power at the relay, fuse, and then the harness at the back. Should be able to figure out, from there, where your prob is.

Ineedparts · 08-30-2008, 03:02 PM

Make sure the wires have a good solder at the pump, yank on the wires, make sure they stay connected.

***FaLKoN240*** · 08-30-2008, 04:32 PM

Try using a different ECU, or making sure your ECU is plugged in tight.

I had a bad ECU and my fuel pump wouldn't prime.

08-30-2008, 11:06 AM	#1
s14jesse Zilvia Junkie Join Date: Jan 2008 Location: highland (909) Age: 32 Posts: 410 Trader Rating: (6) Feedback Score: 6 reviews	fuel pump prob?!?!? S14 SR20det redtop i checked all the relays and fuses on the car and they all worked fine i took out the fuel pump and i tested it with a battery and it worked fine i put evrything back together and my car wont start. so far what i noticed is that i have no power going to the fuel pump cuzwhen i turn the power on the fuel pump wont turn on for a sec as it should once agin im clueless all the relays and fuses r fine but when i checked the power plug from the fuel pump my test light shows theres no power going to it at all so does anybody have an idea y its doing that? THANKS A LOT FOR THOSE WHO R HELPING ME!

08-30-2008, 11:10 AM	#2
UNISA JECS Nissanaholic! Join Date: Feb 2007 Location: Socal Fontana Age: 42 Posts: 2,372 Trader Rating: (40) Feedback Score: 40 reviews	Just becuase you test the fuel pump with power and it spins doesn't mean its good, you need to test it with a fuel pressure gauge. __________________ PARTS 4 SALE !! Z32 E-Brake/Parking Brake Heatshield Assemblys!!! *Rep/Feedbacks*

08-30-2008, 04:32 PM	#5
*FaLKoN240* Super Moderator Join Date: Jun 2004 Location: SF Bay Area Posts: 16,761 Trader Rating: (73) Feedback Score: 73 reviews	Try using a different ECU, or making sure your ECU is plugged in tight. I had a bad ECU and my fuel pump wouldn't prime. __________________ Best way to do business with me? Make your best offer FIRST.

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08-30-2008, 02:40 PM	#3
JVD Nissanaholic! Join Date: Feb 2005 Location: Alberta, Canada Age: 32 Posts: 1,820 Trader Rating: (0) Feedback Score: 0 reviews	See if you have power at the relay, fuse, and then the harness at the back. Should be able to figure out, from there, where your prob is.

08-30-2008, 03:02 PM	#4
Ineedparts Zilvia Junkie Join Date: Jan 2008 Location: Wichita Ks Age: 34 Posts: 449 Trader Rating: (8) Feedback Score: 8 reviews	Make sure the wires have a good solder at the pump, yank on the wires, make sure they stay connected.