1JZ is sluggish and won't rev past 6k?

[Turbo Drifter]

Harness was extended and modded for JZX81 into MX83 wiring, and is all in order. I am running stock injectors. And no, I don't have a wideband A/F gauge.

TPS hasn't been touched yet.

Would this problem have a possibility of being created by a problem with fuel pressure/fuel pump not having enough voltage?

I wired the fuel pump to the tail lights as a switch, and I have a feeling it's not receiving enough voltage.

That was why I was asking if you had a Wide band, would know really fast if you had a fuel problem. Running the fuel pump off the tail lights is a bad idea, at the very least you want the fuel pump on its own relayed and fused power source. I would also hook it up to a ECU switch so it dose not run all the time with the key on (from a safty stand point).

Easy test to see if it is the power to the pump, hook it strait to a 12v battery for a few min and see if that works.

Jeremy

 

[viperkillertt]

Harness was extended and modded for JZX81 into MX83 wiring, and is all in order. I am running stock injectors. And no, I don't have a wideband A/F gauge.

TPS hasn't been touched yet.

Would this problem have a possibility of being created by a problem with fuel pressure/fuel pump not having enough voltage?

I wired the fuel pump to the tail lights as a switch, and I have a feeling it's not receiving enough voltage.

Hmm, that is a possibility. It defiantly is time to get a wideband. That is the first and most important part to any turbo vehicle.

 

[jza71]

I wired the fuel pump to the tail lights

:3d_frown: ..... Y? ..... :3d_frown:
:3d_frown::cry::cry::cry::3d_frown:

 

[viperkillertt]

:3d_frown: ..... Y? ..... :3d_frown:
:3d_frown::cry::cry::cry::3d_frown:

SO theoretically if you turn the lights off, no fuel?

 

[zokustyle]

Yep, it was for testing with a switched source because the current wiring had the fuel pump somehow running with the key off and out...

So in order to turn the car off I'd have to pull the battery.

But my water pump is fucked, so I have some bigger issues than this for right now. :/