Uh oh...fuel pump death whine

[CaptainHenreh]

The fuel pulsation dampenener? I've thought about eliminating it, but I've heard it can be a good thing and I just replaced it a few months ago with a brand new one. It so far hasn't caused me any leaks like the 20 y/o old did when it went out....

I didn't realize you replaced it already. Carry on.

[JustinG]

I'm ordering the Driftmotion complete kit, its pricey but includes everything, .......

ITs actually a pretty good deal Goodspeed. Especially since everything you need is there, and you don't have to worry about putting together any damn AN lines, which will make you wanna kill yourself.

PS your next mod better be getting rid of that stupid fucking cellphone antenna on your back window.

[Goodspeed]

Another quick question....

Long story short, the hardline leading to the fuel pump hanger kinked and bent upon attempted removal, a notorious MK3 problem. This meant I had to buy a new hanger, which I have.

The install guides I'm using have pictures like these (not mine) showing 2 hanger wires leading to 2 Walbro wires....black to black and blue (green after 20 yrs of gas) to red.





Now, my new hanger has this wire on the back that I, and so far others, can't explain, leading to a resistor. This leaves me with 3 hanger wires vs. 2 Walbro wires. What would such a thing do, and if others don't have/use it, can I just wrap the end in tape and forget about it?

[Mike]

if your stocker ain't got it and the fuel pump ain't got it, fuggit. was probably meant for some jdm fuel pump of some sort with fancy electronics onboard.

[Dave]

umm, maybe call wherever you got the hanger from? If its a Toyota part, call one of the 2 dealerships on Supraforums, tell them you have a brand new hanger and a there's a wire that isn't on your original. They should be able to tell you exactly what it went to and if it has been subsitituted to be able to accomodate additional cars.

[ViPER1313]

Connect wire 5->1, 4->3 and cut 2 off near the resister (its a ground, it will be fine.) Don't use electrical tape or crimps for any of the connections - use solder and heat shrink tubes.

[JustinG]

i would assume that the two blue wires are connected via the same bolt on the stock FP. So you can do what Adam said or connect the 2 blue wires to the wire on the Walbro, if my assumptions are correct. They wouldn't make two wires the same color if they weren't meant to be connected together

[ViPER1313]

connect the 2 blue wires to the wire on the Walbro, if my assumptions are correct. They wouldn't make two wires the same color if they weren't meant to be connected together

If you do that you will at best have a non functional fuse blowing car, at worst you will have created a 3500lb bomb. The blue wire with a resister attached (2) to it is a ground - the insulated connector at the top (1) is positive. Just take a look at the thing - its the same fuel pump hanger style your DSM uses. Shep would cry if he saw your comment.

[Evan]

it does look like a ground since its attached to the body like the black wire.
but why would you put a resistor on ground (if it is indeed a resistor, how many ohms?) and why make it the same color as the hot wire?

[ViPER1313]

but why would you put a resistor on ground (if it is indeed a resistor, how many ohms?) and why make it the same color as the hot wire?

My understanding was that resisters don't care which way voltage passes through them. Maybe the new wire is used for a low voltage fuel pump? Why they would make it the same wire as the hot wire??? IDK. Why are both battery cables on an 89 Taurus SHO black? Maybe blue wire was cheaper than black.

[Ginger0]

I think the point was that telling him what they were, when you don't know what two things that are rather out of the ordinary are about, might not be the best course of action.

[JustinG]

connect the 2 blue wires to the wire on the Walbro, if my assumptions are correct. They wouldn't make two wires the same color if they weren't meant to be connected together

If you do that you will at best have a non functional fuse blowing car, at worst you will have created a 3500lb bomb. The blue wire with a resister attached (2) to it is a ground - the insulated connector at the top (1) is positive. Just take a look at the thing - its the same fuel pump hanger style your DSM uses. Shep would cry if he saw your comment.

Your 1g assembly looks like that, but the 2g assembly is rather different, Walbro for a 2g is a direct plug in replacement....FOOL

[Maengelito]

Goodspeed, is that hanger exclusive to MKIII's or is it a part that a couple of different Toyotas use? Is there a gas warning light on the dash when you're low?

[Goodspeed]

Goodspeed, is that hanger exclusive to MKIII's or is it a part that a couple of different Toyotas use? Is there a gas warning light on the dash when you're low?

Pretty sure its exclusive to the MK3 Turbo. I was told that the NA cars even have different setups, but I can't be positive on that.

Anyhoo, I got off the phone with the dealer I got it from and he had an interesting story for me, apparently with older models like mine (being that the Supra always was made solely in Japan), I might have a car that was intended for Canada or somewhere else that ended up in the US. I've never heard of such a thing but the guy professed that he runs into this situation often, so either I 1) have a freaky pump hanger exclusive to my car or 2) they just shipped me an exotic foreign hanger meant for another market.

[Goodspeed]

We pulled the original hanger and found no 3rd wire, so it was just cut off right at the resistor.

Another question...I was connecting the blue/red power wires for the pump on the hanger, and possibly made a mistake. I wanted to solder/shrink wrap all the connections, so I went ahead and started soldering. I bought too heavy a gauge of solder, and the resulting connection was too large and bulbous for shrink wrap to fit over. So, I tried to shrink wrap it anyways by cutting 2 tubes into flat pieces, and overlapping them to hope to make a solid cover. It didn't really work, and some of the soldered/twist-wired connection was still showing when I put the hanger into the tank.

My question is, with some of it exposed, will this cause the car to go boom? The ground wiring was done right and sealed well.

My install guide, provided by a member of Supramania

You can solder these wires if you would like, and even use shrink tubing to cover that if you wish

If this connection is submerged in gas and current goes through it, will that cause an explosion? I'm probably going to redo it anyways for peace of mind, I'm just curious if its a definite yes/no situation.

[.RJ]

If this connection is submerged in gas and current goes through it, will that cause an explosion?

No. But i'd still re do it correctly.

Also, crimp > solder

[Dave]

Goodspeed, is that hanger exclusive to MKIII's or is it a part that a couple of different Toyotas use? Is there a gas warning light on the dash when you're low?

Pretty sure its exclusive to the MK3 Turbo. I was told that the NA cars even have different setups, but I can't be positive on that.

Anyhoo, I got off the phone with the dealer I got it from and he had an interesting story for me, apparently with older models like mine (being that the Supra always was made solely in Japan), I might have a car that was intended for Canada or somewhere else that ended up in the US. I've never heard of such a thing but the guy professed that he runs into this situation often, so either I 1) have a freaky pump hanger exclusive to my car or 2) they just shipped me an exotic foreign hanger meant for another market.

It's possible. When I was working the parts counter at Steven you had to sort through random parts and some of the would be exclusive for CA (emissions) and Canada. A lot of trucks also have cold-weather packages designed for use in the frozen wastelands up north. Usually the VIN will rule these kinds of things out as well.

Crimp is good in some instances, but I prefer solder/shrink for a nice clean finish.

[Ginger0]

Also, crimp > solder

Heretic.

[Goodspeed]

Phew...two consecutive days, two repeated fuel pump installs. Took me four hours, but I got that tank out with my knees and a jack, rewired the pump, and Ryan and I got it back up (def. a two person job, what a PITA)

But yeah...my previous attempt literally fell apart in my hands when I took the pump out. I actually had to reach in the tank with my arm and fish out some shitty shrink rap in inch-deep gas. This time around, crimped and wrapped in electrical tape. Felt/looked way more solid

[ScottyB]

oh man....you're reminding me of when i had to change the fuel filter on my A4. do you still smell like fuel? :lol: ugh that sucked