not getting power to the fuel pump - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

1on1 · 01-07-2010, 02:25 AM

ok so i recently swapped my old motor into my new chassis same (95 240sx). since my new chassis is a factory manual, i had to purchase a manual engine harness and lower harness.

so when i try to start the car, my car just cranks. I am not getting any power to my fuel pump so i checked the fuse box on the driver-side which is good. the relay near the ecu is good but does not click. my car will crank and run if i spray brake cleaner. i have an HU ecu (95 auto ecu).

any help will be appreciated.

fos240 · 01-07-2010, 06:36 AM

how do you know the relay is good if it's not clicking?

on a s13 i had before, the contacts of the fuse holder had opened up on the side leaving the fuse. testing on top of it showed power. but the voltage wasn't making contact to the outbound side of the connector.

frankie

RYAN_S-14 · 01-07-2010, 06:46 AM

check your wires, you could always run a new wire to the Fuel pump but id try to fix the problem, swap the fuse and relay even if they look good they might be bad, I have had that happen before

g6civcx · 01-07-2010, 07:59 AM

What engine?

1on1 · 01-07-2010, 12:09 PM

Quote:

Originally Posted by fos240

how do you know the relay is good if it's not clicking?

on a s13 i had before, the contacts of the fuse holder had opened up on the side leaving the fuse. testing on top of it showed power. but the voltage wasn't making contact to the outbound side of the connector.

frankie

the relay that's on their is from my old chassis and i know it's good since it used to work. ill recheck that later on today.

Quote:

Originally Posted by RYAN_S-14

check your wires, you could always run a new wire to the Fuel pump but id try to fix the problem, swap the fuse and relay even if they look good they might be bad, I have had that happen before

yea i mean i can always have a manual switch but i rather have it legit. from what im thinking, i think it might be the engine harness i bought since the previous owner was ka-t. when i move the wires around, the ecu turns off and then on. i noticed it and it was kinda late at night since my friend had work in the morning.

Quote:

Originally Posted by g6civcx

What engine?

this is a 95 ka24de nothing special T_T

RYAN_S-14 · 01-07-2010, 12:15 PM

Quote:

Originally Posted by 1on1

yea i mean i can always have a manual switch but i rather have it legit. from what im thinking, i think it might be the engine harness i bought since the previous owner was ka-t. when i move the wires around, the ecu turns off and then on. i noticed it and it was kinda late at night since my friend had work in the morning.

I agree!! but its always a last resort

g6civcx · 01-07-2010, 01:46 PM

I still don't understand. Is the donor engine manual or auto?

1on1 · 01-07-2010, 02:13 PM

Quote:

Originally Posted by RYAN_S-14

I agree!! but its always a last resort

if my friend and i cant figure it out by today, then most likely he'll suggest that.

Quote:

Originally Posted by g6civcx

I still don't understand. Is the donor engine manual or auto?

the motor came out my old car, had a auto to manual swap. then swapped that over and bought a manual engine harness and lower harness since my new chassis is a factory 5-speed.

1on1 · 01-08-2010, 01:59 AM

found the problem, it was the clip on the harness wasnt on lock. GG now i feel retarded

01-07-2010, 02:25 AM	#1
1on1 Post Whore! Join Date: Aug 2005 Location: Norcal Posts: 3,314 Trader Rating: (15) Rides Gallery: 1on1 Feedback Score: 15 reviews	not getting power to the fuel pump ok so i recently swapped my old motor into my new chassis same (95 240sx). since my new chassis is a factory manual, i had to purchase a manual engine harness and lower harness. so when i try to start the car, my car just cranks. I am not getting any power to my fuel pump so i checked the fuse box on the driver-side which is good. the relay near the ecu is good but does not click. my car will crank and run if i spray brake cleaner. i have an HU ecu (95 auto ecu). any help will be appreciated. __________________ instagram

01-08-2010, 01:59 AM	#9
1on1 Post Whore! Join Date: Aug 2005 Location: Norcal Posts: 3,314 Trader Rating: (15) Rides Gallery: 1on1 Feedback Score: 15 reviews	found the problem, it was the clip on the harness wasnt on lock. GG now i feel retarded __________________ instagram

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01-07-2010, 06:36 AM	#2
fos240 Leaky Injector Join Date: Dec 2009 Location: boonville nc Posts: 145 Trader Rating: (2) Feedback Score: 2 reviews	how do you know the relay is good if it's not clicking? on a s13 i had before, the contacts of the fuse holder had opened up on the side leaving the fuse. testing on top of it showed power. but the voltage wasn't making contact to the outbound side of the connector. frankie

01-07-2010, 06:46 AM	#3
RYAN_S-14 Zilvia Junkie Join Date: Jul 2003 Location: madison WI Age: 42 Posts: 586 Trader Rating: (0) Feedback Score: 0 reviews	check your wires, you could always run a new wire to the Fuel pump but id try to fix the problem, swap the fuse and relay even if they look good they might be bad, I have had that happen before

01-07-2010, 07:59 AM	#4
g6civcx Post Whore! Join Date: Apr 2004 Location: Virginia, USA Posts: 5,764 Trader Rating: (5) Feedback Score: 5 reviews	What engine?

01-07-2010, 01:46 PM	#7
g6civcx Post Whore! Join Date: Apr 2004 Location: Virginia, USA Posts: 5,764 Trader Rating: (5) Feedback Score: 5 reviews	I still don't understand. Is the donor engine manual or auto?