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

[IJ.]

QuickNeasy "fix" would be to use an LPG safety switch.

It watches for RPM if there's none it shuts the power off.

 

[SupraMario]

QuickNeasy "fix" would be to use an LPG safety switch.

It watches for RPM if there's none it shuts the power off.

O.O that sounds like an awesome thing! Cause then it won't run when the car is in the ON position but not starting! YAY

So where is a good place to buy one? And how much are they? And where would I wire it too?

 

[jetjock]

The automotive equivalent is known as an RPM Relay. Bosch makes several models that were used on older cars. An inertia switch is also commonly used for this. Makes for a handy anti-theft device too...

 

[IJ.]

You could wire it between the line you have from the ECU to the Fuel pump relay then all it needs is a rpm signal.
(This is how the stock ECU acts normally)

I guess anywhere that Supplies/Fits LPG/Propane systems for RV's/cars/trucks?

Not real expensive.

I have a couple here but you need one now I guess?

 

[SupraMario]

You could wire it between the line you have from the ECU to the Fuel pump relay then all it needs is a rpm signal.
(This is how the stock ECU acts normally)

I guess anywhere that Supplies/Fits LPG/Propane systems for RV's/cars/trucks?

Not real expensive.

I have a couple here but you need one now I guess?

No don't need one now, as this car is going to Cookeville and then going under the knife again to make sure everything is running %100.

 

[IJ.]

Haven't read through the whole thread but why can't the 2J ecu control the pump as normal?

 

[SupraMario]

Haven't read through the whole thread but why can't the 2J ecu control the pump as normal?

It can...but I didn't do the wiring, doc did. He did a switch though, basically instead of the wiring going to the ECU he left it bare and told me to wire a switch to it so I did. Turn the switch on...power to fuel pump, turn it off and no power, but when I leave the switch on, and turn the ignition to on and not start, the pump runs. So basically it turns on without the engine being started.

 

[IJ.]

ewwww that sucks..

Any reason he does it that way?

 

[jdub]

An inertia switch is also commonly used for this.

I believe the Ford Crowne Victoria uses these

Ian - wondering the same thing myself.

 

[SupraMario]

ewwww that sucks..

Any reason he does it that way?

I believe the Ford Crowne Victoria uses these

Ian - wondering the same thing myself.

We won't know until The good doc replies to this thread

 

[jetjock]

I believe the Crown Vic does. So do many older Ford trucks and Jags, among others. So do Deloreans and ELTs

Also known as a Rolomite Switch. Basically a steel ball held in place by a magnet that when dislodged in a collision opens a set of contacts. And yeah, it's bad news not having at least something...

 

[jdub]

Yep...a weenie roast waiting to happen.

LOL...sudden stops do activate an ELT!
I was thinking about using one of these inertia switches in the rear of the car as an added measure.

 

[SupraMario]

I believe the Crown Vic does. So do many older Ford trucks and Jags, among others. So do Deloreans and ELTs

Also known as a Rolomite Switch. Basically a steel ball held in place by a magnet that when dislodged in a collision opens a set of contacts. And yeah, it's bad news not having at least something...

Yea I know, believe me I am the first person to scold people when they do stupid unsafe shit.
Just hope this one time doesn't get me killed that I break my own rules.

 

[jetjock]

Lmao. More than a few ELTs have been tracked to the trunk of a car or a dumpster. Lets just say I know for a fact you Air Force guys and the CAP are not amused when it happens

 

[SupraMario]

This may sound stupid but what does ELT stand for?

 

[jdub]

LOL...Guard is hardwired on (at least on the jets I flew). Lets say an ELT is highly irritating

Mario - Emergency Locator Transmitter...transmits on UHF 243.0 and/or VHF 121.5...the new ones also on 406 MHz.

 

[Dr Tweak]

Hey guys,

Of course there's a reason for the FC circuit not being connected to the computer: this is a 2JZGTE ECU, which DOES NOT HAVE AN FC CIRCUIT.

The 2JZGTE actually communicates with another ECU, called the fuel pump ECU (which replaced the C/OPN relay). Since no one that I know of has ever installed the said Fuel Pump ECU into their car when doing a 2JZ swap, the only way to turn the fuel pump on is with a switch running to the stock relay.

FP (the wire going to the ECU which switches between high and low voltage) is also not used by the 2JZGTE ECU, which means that when the fuel pump is running, it's always in the default condition (high voltage). Thus, no bypass is needed.

THIS ONLY APPLIES TO THE 2JZ SWAP! Now if you want to do an easy bypass on the stock ECU, just cut the yellow FP (not FC!!!) wire, and the pump will always be running full voltage.

As far as safety, I do agree that it is best to have the fuel pump shut off when the engine is off, but the only way to do that would be to either 1. Locate and install a Toyota/Lexus Fuel Pump ECU or 2. Install a device like you guys were talking about (RPM activated relay). I'll have to look into that to see if I can pick some up to stock, I hadn't heard of them before. MSD has some RPM activated switches but they are $$$.

-Doc

 

[Dr Tweak]

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

 

[jdub]

Of course there's a reason for the FC circuit not being connected to the computer: this is a 2JZGTE ECU, which DOES NOT HAVE AN FC CIRCUIT.

LOL...GOOD reason


The MSD switches require a RPM module...I didn't see one at a low enough RPM to be useful.

 

[Dr Tweak]

Tweak - these require a RPM module...I didn't see one at a low enough RPM to be useful.

Yeah me neither, I'm actually on the phone with them right now....