ae92 gtz fuel use problem

[devius]

hey people

my ae92 gtz has started using more than the normal amount of petrol
the spark plugs are pretty rooted so im getting more but its not just that (i think) when i start it from cold the revs go up and drop down a few times then settles, the same happens when its warm except its worse and it does not settle until it cools down.

could it be the A.F.M?

any idea's?

[IH8TEC]

has anyone tinkered with the afm at all?

[devius]

not that i know of man, why what ya thinking?

[IH8TEC]

there is a mixture screw on the afm, should be easy to see, but if thats been tinkered with it can stuff the idle etc. (DO NOT PLAY WITH IT) unless you measure exactly where it is FIRST. trust me from personal experience lol.

also yeah change the plugs.

how many kms you getting to a tank???

[devius]

not sure of k's but i had 3/4 of a tank and that was gone in two and a bit days, that much would nornally last me a week, oh real, should i get a mechanic to look at the mixture screw?

[IH8TEC]

umm maybe see what other things people suggest before taking it to a mechanic, i can't think off the top of my head, all this time away from my car i forget stuff lol

[Lloyd]

Change plugs and check fault codes first. If plugs dont fix it then go from there

[devius]

sweet as, got some plugs today gonna chuck them in soon, how do i check for fault codes?

[bluemaumau]

bridge terminals e1 and te1 i think count flashes of engine check light

[devius]

and where are these terminals? lol

[bluemaumau]

little black box about the size of a matchbox, i think there on the strut tower(passenger side)

remove the lid and bridge the correct terminals

[devius]

ok found that but the box is filled with some sort of shit

[Mr Revhead]

DO NOT TOUCH THE SCREW.
pretend its not there

that gunk is anti corrosion, ignore it.

[devius]

lol thanks rev head, i am not gonna touch the screw lol

[devius]

ok under the box it has e1 and t are they the ones to use?

[bluemaumau]

yea im 99% sure those are the ones

[Crampy]

Could be your oxy sensor. My one was stuffed in my S/C AW11 and it would use a bit more gas. It would occasionally throw a check engine light too. Got it replaced and it was sweet.

[devius]

ok new spark plugs are in, rungs alot better but no better on idle when warm, ok so i plug e1 into t and see how many times the engine light flashes???? once i have the number of times it flashes where do i find out what it means???

[Zak]

Just post it up, or search for toyota ecu codes on google and have a look

[bluemaumau]

viewtopic.php?t=35814

count the falshes then there should be a short pause and then more flashes then a long pause the a repeat or another code

i.e flash flash flash flash flash short pause flash long pause repeat - error code 51