R32 GTST - What is this bit and what does it do?

[browny]

What is this:

http://www.hotkey.net.au/~timbrown/thing.jpg

From memory it was located in the engine bay on the passenger side. If i'm reading correctly, my wiring diagram shows it as being between the -ve terminal of the fuel pump and the body earth.

[Jim]

My manual has it as a "Dropping resistor". Do you want to borrow my R32 manual? It's one of the NZ translated ones... Or pin it out on my car even,...


Jim

[browny]

I've got that manual too - but I couldn't find any reference to the thing.

I put the mutimeter on it at it had a resistance of 0ohms as well.

[Jim]

:confused:

unless its something to do with the fuel pump cutout...

youre welcome to have a look on my R32 though....

[browny]

Ah, i've found the diagram you were referring to - it looks like part of circuit used for operating the std pump at a lower speed.

Can anyone come up with a good reason why I should keep it?

[browny]

And I measured it again with the multimeter - it has a resistance of 0.6 ohms.

[zigga]

i got the same thing.. in my s13.. (rb20) sure is an ugly thing.. wouldnt mine taking it out.. why dont YOU try it and see what happens.. let me know.. so if its okay i will too :D

[tandy ass]

Browny and zigga - its there to slow the fuel pump at idle to keep it quiet and reduce wear and tear on it. There is no reason to remove it if its causing no problems.

[crx2gen]

Polariser.

Brocky sold out.

[browny]

Bozz - Is it worth retaining the 2 speed operation considering:

(a) I'm using an external Bosch pump

(b) The pump wiring and control module never came in my loom so I would have to recreate it all. Leaving it out means I only have to run the pump signal wire to the boot (where my battery is as well)

[tandy ass]

I would say not to keep the variable speed unit. The new bosch fuel pump will have a lower resistance than the factory pump, hence the voltage on it will be lower if the resistor pack is still in series with the pump. Removing it will not harm anything.

[zigga]

i also have a upgraded fuel pump.. unsure what it is.. bought car with it.. sure is loud.. do i still need this?? i got told it was a 600hp pump tho...