FC3S Murray

iTrader: (7)

As stated in thread. How do you do it. Battery to ??? to pump.

RoughRex

Maybe I'm just not smart but... you MAY need to be more specific.

FC3S Murray

iTrader: (7)

Basically hot wiring the pump. Thinking about just running wire from battery to switch to pump. Just curious of any percautions. been a long day.

arghx

iTrader: (3)

yeah just use a relay that's run by any ignition switched source

NZConvertible

Why do you want to do this? The only effect it'll have is to make the engine run richer than normal at all times except high load, when it'll run exactly the same as before.

TehMonkay

iTrader: (-1)

Why is there about 5x more criticism towards peoples mods on here than people actually helping out?

Mutaku

well for one this is a bad idea.

TehMonkay

iTrader: (-1)

It's a terrible mod if your stock wiring harness is bad and you're running a standalone right?

You don't know if he is but it's just so irritating reading all of these technical threads and seeing people say, don't do that you don't need to, or , thats rice, or thats a stupid mod. Or people always talking down to others and pretending all they have is some junky na everytime they ask a question. This guy may have very well had a viable reason to do this mod, maybe his fuel pump relay is bad or he's getting low voltage to his pump?

FC3S Murray

iTrader: (7)

already done. fuel relay bad. Was dropping voltage at WOT. Pump hot now and 12.5 constant.

Bad idea+ yes if I roll but no relay, this will do for now.

NZConvertible

The wiring harness has nothing to do with it and he's not running a standalone. If he was it'd be a totally different situation and I'm sure he would've mentioned it.

My comment was completely legitimate and technically correct. If you have a good reason to think I'm wrong then say so. Otherwise quit whining.

If the relay's bad the pump voltage will either be always high or always low. The only way it could go from high voltage at low load to low voltage at high load is if the rewire was done wrong. If you're sure the relay's bad it can be easily replaced with a generic 30A auto relay. There's no point leaving it that way coz all you're doing is wasting gas.

FC3S Murray

iTrader: (7)

Thanks for the concern NZ but am running better AFR now at cruising. My idle AFR is still 13.5, nothing changed before the relay removal. Not wasting that much gas if the car was still running higher then average voltage even before the 1st rewire.

Car runs better now with hot pump then before and after the pump rewire. I am working out a lot of gremlins from this car and mine always seems to be an exception from the rest of the mob when it comes to fixes and mods. Previous owner did a lot of custom **** to wiring and harness is in pretty bad shape.

I am planning on rewiring the entire harness and removing wires of components and sensors i have removed in the past.

Found the hesitation problem to: plug wire.

Cheers all.

NZConvertible

It shouldn't make any difference to cruise AFR unless your O2 sensor isn't working properly, because the ECU should be in closed-loop and correct the mixture.

Doing that shouldn't make any difference to how well the car runs, so the fact that it does indicates something is wrong and needs fixing. Whether you choose to do anything about it is up to you, I'm just letting you know your car's broke...

FC3S Murray

iTrader: (7)

I should have stated "car IDLES better". Higher voltage to pump, higher pressure in fuel lines, better atomization of fuel.

Yeah, when isn't this POS broke.

NZConvertible

It's doubtful atomisation is improved enough to make any difference to idle quality. The mixture will be richer though, so something may have been causing a lean idle mixture, like a vac leak.