Need help!!! Walbro Pump and my shitty wiring! 2jzgte swap relies on this!!!!!

[Dr Tweak]

WOW. MSD customer service is TERRIBLE. The guy just was like, "Nope, don't have it" and hung up on me.

I'm talking to another company that builds these kinds of things now...

 

[IJ.]

I was just looking around and found this part:

http://www.msdignition.com/product.aspx?id=6967

Seems like it would do the trick, I'm a dealer for MSD so I'll have to see what kind of price I can get on these...

-Doc

The LPG safety switches are reasonably cheap and would work perfectly in this application Tweak.

Here's a first hit on e-bay/google

 

[Dr Tweak]

All well and good if you're down under, I can't find those anywhere here!

-Doc

 

[jdub]

Might want to contact these guys...they have a US office:
http://www.gastec.ws/contactdetails.htm

About this:
http://www.gastec.ws/productSD40.html

 

[tissimo]

What does the stock ecu do with the fuel pump trigger to the fuel pump ecu? does it give a constant 12v signal? does it give a ground? I havn't tested it, not do any of the manuals I've looked at say anything. Once we figure that out we can figure out how to get around it.

 

[IJ.]

All well and good if you're down under, I can't find those anywhere here!

-Doc

I buy stuff from the USA all the time so I'm assuming that mail works the other way around as well

 

[jdub]

What does the stock ecu do with the fuel pump trigger to the fuel pump ecu? does it give a constant 12v signal? does it give a ground? I havn't tested it, not do any of the manuals I've looked at say anything. Once we figure that out we can figure out how to get around it.

I was wondering the same thing about the 2J ECU...either 12V or gnd could be used to trigger a relay.

 

[Dr Tweak]

I was wondering the same thing about the 2J ECU...either 12V or gnd could be used to trigger a relay.

Yeah I was trying to think of a pin on the ECU that gives either of those signals all the time and only when the engine is running, but I can't think of anything. All the ECU inputs and outputs work normally with the key on/engine off.

What does the stock ecu do with the fuel pump trigger to the fuel pump ecu? does it give a constant 12v signal? does it give a ground? I havn't tested it, not do any of the manuals I've looked at say anything. Once we figure that out we can figure out how to get around it.

ECUs that use a Circuit Opening Relay give a ground signal on the FC circuit to turn the pump on.

Might want to contact these guys...they have a US office:
http://www.gastec.ws/contactdetails.htm

About this:
http://www.gastec.ws/productSD40.html

Yeah I found them yesterday and sent them an email, I called but they said that they don't answer the phone and they prefer email, no response yet but I'm hopeful

-Doc

 

[Dr Tweak]

Okay I've been in contact with an electronics company I work with and I have good news. They can build us a module to turn the fuel pump on when a tach signal is being received just like we need. The module is $99. If anyone wants one, just let me know!

-Doc

 

[Dr Tweak]

Well good news guys, I may have figured out a way to accomplish this same thing in the $40 - $45 range, stay tuned

 

[suprabad]

I apologize if this is a stupid question, but why not use the original fuel system ecu?

 

[Dr Tweak]

The one from a Lexus or MK4 Supra? Well, it would work, but it would involve rewiring the fuel pump system (replacing the Circuit Opening Relay)... since that's not part of the engine harnes, I wouldn't be able to do it here.

-Doc

 

[SupraMario]

That and it would be something extra to buy or find. As most engine clips just come with wireing harness and ECU.

 

[turbogate]

Am I correct in assuming that those with standalones don't have this worry since they can definitly activate a fuel pump at a certain rpm?

Thanks

 

[Dr Tweak]

Seems like all the standalones out there would have that feature built in.

-Doc

 

[IJ.]

All MoTeC and All Wolf ECU's do.