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Old 08-19-2016, 02:35 PM   #401
veritasaequitas
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What did you use as a ign. Turn on for the relay? Did it work
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Old 08-20-2016, 10:34 AM   #402
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Check the image I posted... I used the stock fuel pump controller wires that went to the fuel pump to drive the relay
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Old 08-20-2016, 11:20 AM   #403
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Quote:
Originally Posted by TurboQueef View Post
Check the image I posted... I used the stock fuel pump controller wires that went to the fuel pump to drive the relay
Sorry, maybe I was confusing you... here is an updated drawing which includes the JMS FuelMAX in line !!

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Old 09-06-2016, 05:18 AM   #404
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Wired my pump according to the instructions in this thread and now I get a p0463 every once and a while. Any words of wisdom?
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Old 09-06-2016, 07:32 PM   #405
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Originally Posted by boo-key bear View Post
Wired my pump according to the instructions in this thread and now I get a p0463 every once and a while. Any words of wisdom?
Not sure why you would get that code after this mod...

I should have mentioned that wiring the pump using the circuit I drew does cause a P0230 code. This one is "Fuel Pump Primary Circuit" I disabled this code.

Jeff
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Old 09-12-2016, 08:58 PM   #406
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Quote:
Originally Posted by STiSomeday View Post
Cliffnotes: IG switched 12v source for relay coil turn on can't be tied in to the fuel system at all, regardless of the wire you tie in to. If you do, the relay will close and allow current to pass through, but it will not open, and current will continue to go through relay even after removing the key/locking the vehicle.

The fix: Use a non-fuel system related IG switched 12v source for relay coil turn on.


I am really curious to see if any of you guys who have done the rewire and added the relay are having the same issue. If anyone would be willing to check with a multimeter if you're still getting voltage after IG OFF, or even by feeling your relay 10-20 minutes after shutting the car off to see if its warm, or having having someone cycle the key and hold on to the relay to see if it clicks I would love to hear back from you.
What did you end up using as an ignition source for the relay? Mine is drawing current while off as well.
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Old 09-13-2016, 10:34 AM   #407
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What did you end up using as an ignition source for the relay? Mine is drawing current while off as well.
I could not find a solution I was happy with using the relay. I switched over to a FUELPro by DCCDPro fuel pump controller because of this and based on the recommendation of my tuner who has seen stock FPC's burn up with the Walbro 450/465, even with the relay.

Any ignition-switched source that is not in the fuel tank wiring harness under the back seat should work, though. I tested the relay using the parking lights as the relay trigger and it worked fine.
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Old 09-13-2016, 05:18 PM   #408
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Are you guys finding current draw when ignition switch is off when you use the positive and negative wires that normally feed the pump itself to feed the relay?
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Old 09-15-2016, 04:21 AM   #409
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Are you guys finding current draw when ignition switch is off when you use the positive and negative wires that normally feed the pump itself to feed the relay?
Yea i had that problem. If you use another another ignition source outside the fuel pump wiring as suggested it solve that issue.

I didn't like the fact the fuel pump stays on priming all the time with the suggested method so I cut the positive wire and hooked it up with another relay. That 2nd relay gets an external ignition source. Stops priming when it should but still no fuel pump duty.
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Old 09-15-2016, 10:26 AM   #410
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My FUELPro FPC runs the pump constantly with the key on, albeit at a lower duty cycle after a few seconds of priming. I don't mind at all, it made checking my -AN lines and fittings for leaks easy-peasy. If I need the key on and the pump off I can just unplug the pump or the fuse.
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Old 10-06-2016, 03:15 PM   #411
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Originally Posted by kenny_ View Post
Yea i had that problem. If you use another another ignition source outside the fuel pump wiring as suggested it solve that issue.

I didn't like the fact the fuel pump stays on priming all the time with the suggested method so I cut the positive wire and hooked it up with another relay. That 2nd relay gets an external ignition source. Stops priming when it should but still no fuel pump duty.
Do you have a diagram of how you set this up? It would be greatly appreciated considering I think I just destroyed my yellow top
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Old 01-10-2017, 10:48 PM   #412
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Default 4th walbro 450

Hope someone can help here. I'm on my 4th walbro 450. The last 3 have crapped out on me. Today I took out the 3rd one and found that the fuel pump pig tail melted and the pump has burn marks on it.What could cause this issue? I went to IAG and had the car hardwire. Since then it has blown 3 pumps. I can't figure out why. I'm open to any suggestion.
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Old 03-18-2017, 06:43 AM   #413
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Originally Posted by hottwrx02 View Post
Hope someone can help here. I'm on my 4th walbro 450. The last 3 have crapped out on me. Today I took out the 3rd one and found that the fuel pump pig tail melted and the pump has burn marks on it.What could cause this issue? I went to IAG and had the car hardwire. Since then it has blown 3 pumps. I can't figure out why. I'm open to any suggestion.
Any update on this? I went through 2 pumps last summer. Car in storage for winter now. My plan tail was fine, pumps just stopped working...
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Old 03-22-2017, 05:17 PM   #414
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How are you guys hardwiring the GR (2013 wrx) fuel pumps?
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Old 04-08-2017, 05:12 PM   #415
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I hardwired my aeromotive 340 on my 2009 sti. When I go to start it, it doesn't start right away. It's like it loses fuel pressure. So I need to prime it a few times for it to start. Any ideas? I hardwired it directly to my ignition, so when the key is on the pump is 100%. I just bought a walbro 450 because the 340 isn't flowing properly.
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Old 04-09-2017, 05:24 PM   #416
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Quote:
Originally Posted by ZTruitt7 View Post
I hardwired my aeromotive 340 on my 2009 sti. When I go to start it, it doesn't start right away. It's like it loses fuel pressure. So I need to prime it a few times for it to start. Any ideas? I hardwired it directly to my ignition, so when the key is on the pump is 100%. I just bought a walbro 450 because the 340 isn't flowing properly.
With a hard wired pump that's on 100% of the time a prime should not be required. That's only with the 2 second pump shut off from the factory fuel pump controller. I'd be looking at other reasons it's not starting. That's not to say this isn't a fuel problem. Do you have a pressure gauge? You may want to consider starting a new post to get more input to your problem.
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Old 04-09-2017, 05:26 PM   #417
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Originally Posted by 02nismokiller View Post
How are you guys hardwiring the GR (2013 wrx) fuel pumps?
I ran a 8 gauge fused and relayed power source directly to the pump and ground the pump to my body. I used the 12v ignition from the fuel pump controller to power the relay.
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Old 04-09-2017, 07:35 PM   #418
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Originally Posted by sub2010ss View Post
With a hard wired pump that's on 100% of the time a prime should not be required. That's only with the 2 second pump shut off from the factory fuel pump controller. I'd be looking at other reasons it's not starting. That's not to say this isn't a fuel problem. Do you have a pressure gauge? You may want to consider starting a new post to get more input to your problem.


I did start a my own thread but nobody has really chimed in. I bypassed the fpc so idk why I'm having the problem I am if it's hardwired. Sometimes I just can't win with my car lol
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Old 04-10-2017, 09:56 AM   #419
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Quote:
Originally Posted by sub2010ss View Post
With a hard wired pump that's on 100% of the time a prime should not be required. That's only with the 2 second pump shut off from the factory fuel pump controller. I'd be looking at other reasons it's not starting. That's not to say this isn't a fuel problem. Do you have a pressure gauge? You may want to consider starting a new post to get more input to your problem.
A fp gauge is def something youll want to diagnose this and future problems. I run one on my gauge pod.

Does the pump run every time you turn the ign on?
Quote:
Originally Posted by ZTruitt7 View Post
I did start a my own thread but nobody has really chimed in. I bypassed the fpc so idk why I'm having the problem I am if it's hardwired. Sometimes I just can't win with my car lol
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Old 04-10-2017, 10:04 AM   #420
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Originally Posted by ALOKIN View Post
A fp gauge is def something youll want to diagnose this and future problems. I run one on my gauge pod.

Does the pump run every time you turn the ign on?

Yes that's how I have it hardwired, when I turn the key on the fuel pump comes on. Sub2010ss sounded like he had the same issue as I did. He told me to add another o ring to the fuel pump outlet. Possible that it's just losing pressure from it leaking in the basket? I don't know where they're talking about adding another o ring. Does anybody have a picture? I'm getting the car tuned May 6th so I'm just trying to get it figured out by then.
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Old 04-10-2017, 10:10 AM   #421
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Originally Posted by ZTruitt7 View Post
Yes that's how I have it hardwired, when I turn the key on the fuel pump comes on. Sub2010ss sounded like he had the same issue as I did. He told me to add another o ring to the fuel pump outlet. Possible that it's just losing pressure from it leaking in the basket? I don't know where they're talking about adding another o ring. Does anybody have a picture? I'm getting the car tuned May 6th so I'm just trying to get it figured out by then.
Its in the fuel bucket. It seals off around the outlet of the fuel pump. Sometimes the pump can back out of the housing, esp when going from 0 to 100% , acts like a rocket. Thats prob why you are having fuel pressure issues. Again a fp gauge is critical here.
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Old 04-10-2017, 10:31 AM   #422
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Originally Posted by TurboQueef View Post
Sure, my pressure switch is set to trigger voltage increase at 10psi boost. I am using 18v max range at 50% ramp (approx 16 volts when boost us 10psi or more)
this is probably why you're killing pumps. you're over volting it.

I've read through the description of the JMS unit and can't see how it helps if youre not sagging voltage below 12V under load.
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Old 04-10-2017, 10:39 AM   #423
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Here's the thread of me figuring out some of my fuel problems with pictures.

https://forums.nasioc.com/forums/sho....php?t=2824259
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Old 04-10-2017, 10:53 AM   #424
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Originally Posted by sub2010ss View Post
Here's the thread of me figuring out some of my fuel problems with pictures.

https://forums.nasioc.com/forums/sho....php?t=2824259


I saw where you put the o rings. Isn't that where the small fuel hose connects?
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Old 04-10-2017, 10:56 AM   #425
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Originally Posted by ALOKIN View Post
Its in the fuel bucket. It seals off around the outlet of the fuel pump. Sometimes the pump can back out of the housing, esp when going from 0 to 100% , acts like a rocket. Thats prob why you are having fuel pressure issues. Again a fp gauge is critical here.


What your saying does make sense for sure. I'll have to pull the pump out and put the o rings on. I just ordered a new fp gauge since my old one on my fpr broke.
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