Outer Limits 4x4 Board

My GU ute with air con on (worst) doesnt like taking off up a hill
Anyone have any ideas??

GQsh0rty wrote:My GU ute with air con on (worst) doesnt like taking off up a hill
Anyone have any ideas??

turn air con off

HTH
YMMV.

What tyres?

What diff ratio?

Diesel/Petrol

Turbo/non turbo

Bit hard to answer without relevant info

Sounds like it needs a good tune and going over.

Cris

35" tyres
4.6 ratio diff gears
diesel turbo
have had it tuned improved slightly

thinking valve clearances??
or fuel

sounds like fuel issue check main filter and thiimble filter on pump???

Had qdad do the tune not to long ago thought they would of looked, have changed that main fuel filter but will check the injector pump filter, thanks

Also there is no black soot/smoke coming out of exhaust very little to none on 3" straight thru exhaust cut b4 diff
but goes well on boost

let us know how you go.. i usualy have a tiny bit of smoke down low but next to nun.then bout the same, up high tuned with a boost compensator...

Okay i'll let you know, cheers

Could also check the vacuum hose that goes to the AC diaphragm rev compensator.
My imported GQ trucks have em but dunno bout the aussie patrols.

Basically the AC switch allows vacuum on the diaphragm that pulls the throttle open a bit to give more RPM and stop the motor stalling.

my 2 cents........

checked thimble filter was clean as a whistle sort of hoping that was the cause, would of been an easy fix. Where abouts is this vaccuum hose for the AC garth??

gudday

comes of vac pump via AC switch solenoid then onto diaphragm bolted onto the bottom on injection pump.
There is a little "L" shape hook on the other side of diaphragm which when activated pulls back the throttle adjusting for the extra load caused by the AC clutch/pump.

good luck

with 4.6 diff gears it should want to launch off in 1st, id imagine it would have to be some sort of fuel problem myself

Cheers Garth, ill give it a crack today.
and yes it should want to launch off in 1st but yeah nothing is not goin right jst hoping its simply and not expensive

wat size motor is in it?

Has a 4.2L turbo diesel intercooled.
Checked for the diaphragm and its not there checked against a mates pootrol and its being taken off.
also not sure if its a type of charcoal cannister or something on the passengers side guard also is missing.
Leaving toward upping the fuel a little, should help with air con off.
Guess ill just have to look around to see if i can get hold of one so i can take off with air con

GQsh0rty wrote:Has a 4.2L turbo diesel intercooled.
Checked for the diaphragm and its not there checked against a mates pootrol and its being taken off.
also not sure if its a type of charcoal cannister or something on the passengers side guard also is missing.
Leaving toward upping the fuel a little, should help with air con off.
Guess ill just have to look around to see if i can get hold of one so i can take off with air con

if its the black canister your speaking off its not a filter, its the receiver tank for the vacuum!!! you need it too keep some type of reserve vac for the boosters for brake and clutch.

someone's been fiddling around with it me thinks!.....

good luck

Might have to see if i can get my hands on one and change position of my compressor for the lockers
Guess next time i wont buy a car off a mechanic from sydney

ha ha yeah.............you can make your own one up as i did when remote mounting it, but you will need the 2 x non-return valves in the circuit.
It'll make a big difference when clutching all the time at low revs ie crawling etc

on another subject, where do you get the 4.6 ratio gears when running 35" tread? how expensive are they?

cheers

Just had a proper look with some light lol appears that it has be routed into the passengers front guard, will be taking the inner guard off to inspect this weekend and see what i can make of it.
Got the 4.6 ratio diff gears from brunswick diesel in perth cheapest genuine ones i could find - $550 a set, second hand and they do the v8 diesel conversions so almost new gears too.
Ended up paying $1200 which was GST and postage to brisbane

GQsh0rty wrote:Ended up paying $1200 which was GST and postage to brisbane

wow they have gone up.. they must have realised they are in demand.

yeah well brand new 4.3's were around $900 a set and i wasnt paying that lol so cant imagine what brand new 4.6's were