3800Pro Forums banner

1 - 8 of 8 Posts

·
Registered
Joined
·
41 Posts
Discussion Starter #1
what is the differance in the L36 vs the L67 fuel pumps? I have been told the L67 pump has 2 stages? Not sure if what i heard was true but i'm tryin to confirm it. Also I heard there is a resistor or something in the L67 wiring harness.
 

·
Registered
Joined
·
4,344 Posts
Yes, the L67 are dual speed, stock around 125 kPA the pump kicks into high speed mode per PCM command.

Not sure on wiring, I haven't been under there yet....
 

·
Registered
Joined
·
713 Posts
The Australian model which would be much the same I imagine is controlled by a fuel pump controller module between the PCM & the pump.
When during low demand it has the pump running at a 67% duty, then when the PCM commands it rises up to full 100% duty cycle.





Cheers

Deek
 

·
Registered
Joined
·
1,199 Posts
actually the newer cars i think around 99 or 00 dont have a 2 stage pump. They run on "high" all the time, and the resistor was taken out of the wiring
 

·
Registered
Joined
·
3,185 Posts
I swapped in an l67, am making around 410hp on spray and haven't outflowed the pump yet. At least my scan guage isn't showing knock or any issues.
 

·
Registered
Joined
·
4,344 Posts
My PCM code still is setup for a dual speed pump. Any way to know if I have one or not? Where is the resistor located? I heard it will cause headaches when it smokes....

actually the newer cars i think around 99 or 00 dont have a 2 stage pump. They run on "high" all the time, and the resistor was taken out of the wiring
 

·
Registered
Joined
·
713 Posts
actually the newer cars i think around 99 or 00 dont have a 2 stage pump. They run on "high" all the time, and the resistor was taken out of the wiring
In latter 2003 Australian models the fuel pump controller was left out and a bypass plug in its place. So pump ran at 100% duty all the time.
Maybe our fuel pump controller module is the same as what you guys refer to as a resistor in the wiring.

Cheers

Deek
 
1 - 8 of 8 Posts
Top