fuel pump not turning on by itself - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Sideways_blksr20 · 10-25-2009, 09:26 PM

i just did a rb swap and my fuel pump doesn turn on when i tried to start the car ( i cant hear the fuel pump coming on)we tested the fuel pump manually and its working fine but when we try to turn the car on it doesnt go on
we checked fuses
relay
what else shoul we check
thanks
we also checked the wiring and the plug is not getting any voltage

Sideways_blksr20 · 10-26-2009, 05:33 AM

ANyone??????

ericb382 · 10-26-2009, 09:57 AM

Are you getting voltage to the relay? How about the fuse? Did you check your ground?

Sideways_blksr20 · 10-26-2009, 03:24 PM

I checked my ground and it reads 12 v I haven't check the relay voltage the fuse is fine thanks

Sideways_blksr20 · 10-27-2009, 06:52 PM

????????????????????????????

ericb382 · 10-27-2009, 08:52 PM

Quote:

Originally Posted by ericb382

Are you getting voltage to the relay? How about the fuse?

Did you check what he said!?

Check to see if you are getting power to the fuse or relay.

If so, check continuity between relay and pump. Narrow down where you're losing current.

If not, make sure your fuel pump relay output is hooked up correctly on the ecu.

Sideways_blksr20 · 10-28-2009, 03:45 PM

where is the fuel pump relay output?
we havent connect the ecu to the car harness ...could that be the problem

yokotavia · 10-28-2009, 04:08 PM

or just hardwire your fuel pump to a switch.

its better to have constant power to it from your battery anyways (when the car is on)

mr.booie · 10-28-2009, 04:13 PM

did you tuck the harness if its lowered? lol. it happend to me.

Sideways_blksr20 · 10-28-2009, 06:32 PM

thats how i turn on the car the first time i harwire it to a battery

Sideways_blksr20 · 10-29-2009, 09:41 PM

????????????????????????????/

projectRDM · 10-29-2009, 11:14 PM

Quote:

Originally Posted by Sideways_blksr20

where is the fuel pump relay output?
we havent connect the ecu to the car harness ...could that be the problem

How in hell do you expect the ECU to turn the fuel pump on if it's not plugged in? Magic? Pixie dust?

Sideways_blksr20 · 10-31-2009, 08:51 PM

Problem sold had a bad relay !thanks

Sideways_blksr20 · 10-31-2009, 11:03 PM

Solve .... My bad

10-25-2009, 09:26 PM	#1
Sideways_blksr20 Zilvia Junkie Join Date: Oct 2008 Location: Tustin Age: 22 Posts: 373 Trader Rating: (2)	fuel pump not turning on by itself i just did a rb swap and my fuel pump doesn turn on when i tried to start the car ( i cant hear the fuel pump coming on)we tested the fuel pump manually and its working fine but when we try to turn the car on it doesnt go on we checked fuses relay what else shoul we check thanks we also checked the wiring and the plug is not getting any voltage

10-28-2009, 04:13 PM	#9
mr.booie Zilvia Junkie Join Date: Apr 2008 Location: palmdale, ca Posts: 398 Trader Rating: (3)	did you tuck the harness if its lowered? lol. it happend to me. __________________

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10-26-2009, 05:33 AM	#2
Sideways_blksr20 Zilvia Junkie Join Date: Oct 2008 Location: Tustin Age: 22 Posts: 373 Trader Rating: (2)	ANyone??????

10-26-2009, 09:57 AM	#3
ericb382 Zilvia Member Join Date: Oct 2005 Location: Flagstaff, Az Posts: 212 Trader Rating: (4)	Are you getting voltage to the relay? How about the fuse? Did you check your ground?

10-26-2009, 03:24 PM	#4
Sideways_blksr20 Zilvia Junkie Join Date: Oct 2008 Location: Tustin Age: 22 Posts: 373 Trader Rating: (2)	I checked my ground and it reads 12 v I haven't check the relay voltage the fuse is fine thanks

10-27-2009, 06:52 PM	#5
Sideways_blksr20 Zilvia Junkie Join Date: Oct 2008 Location: Tustin Age: 22 Posts: 373 Trader Rating: (2)	????????????????????????????

10-28-2009, 03:45 PM	#7
Sideways_blksr20 Zilvia Junkie Join Date: Oct 2008 Location: Tustin Age: 22 Posts: 373 Trader Rating: (2)	where is the fuel pump relay output? we havent connect the ecu to the car harness ...could that be the problem

10-28-2009, 04:08 PM	#8
yokotavia In time-out for misbehaving. Join Date: Dec 2007 Location: The land of bosos and schoolgirls Posts: 536 Trader Rating: (16)	or just hardwire your fuel pump to a switch. its better to have constant power to it from your battery anyways (when the car is on)

10-28-2009, 06:32 PM	#10
Sideways_blksr20 Zilvia Junkie Join Date: Oct 2008 Location: Tustin Age: 22 Posts: 373 Trader Rating: (2)	thats how i turn on the car the first time i harwire it to a battery

10-29-2009, 09:41 PM	#11
Sideways_blksr20 Zilvia Junkie Join Date: Oct 2008 Location: Tustin Age: 22 Posts: 373 Trader Rating: (2)	????????????????????????????/

10-31-2009, 08:51 PM	#13
Sideways_blksr20 Zilvia Junkie Join Date: Oct 2008 Location: Tustin Age: 22 Posts: 373 Trader Rating: (2)	Problem sold had a bad relay !thanks

10-31-2009, 11:03 PM	#14
Sideways_blksr20 Zilvia Junkie Join Date: Oct 2008 Location: Tustin Age: 22 Posts: 373 Trader Rating: (2)	Solve .... My bad