Toyspeed.org.nz Message Board

by **bluemaumau** » Tue Feb 27, 2007 8:43 pm

hey evberyone im trying to track down the reason behing the high idle on my car,

its a AFM 4AGZE

so far i have

* ign timing incorrect
* split hosing/piping
* idle screw in wrong position

anything else?

can the TPS have anything to do with this?

can the cold start system be faulty and cause high idle?

i also read something about the a/c idle screw, can that have a effect?

anybody?

Click here to see "My Black Hole" · by **Stealer Of Souls** » Tue Feb 27, 2007 9:46 pm

Steady high idle or pulsing/hunting high idle?

by **bluemaumau** » Tue Feb 27, 2007 9:47 pm

steady (1950rpm)

by **big_boy** » Tue Feb 27, 2007 9:56 pm

AC valve stuck open ??

by **bluemaumau** » Tue Feb 27, 2007 10:00 pm

were is that>is it on the actual condensor? or is it a little valve thingy that floats around in the engine bay (on a gtz would obviously be mounted on the firewall)

by **big_boy** » Tue Feb 27, 2007 10:02 pm

its a valve that passes air past the trottle when needed

2 tests is it high when its cold
& is it high when you engage the air con also if you leave it @ idle & engage & dissange the air con will the revs change & witch way

by **bluemaumau** » Tue Feb 27, 2007 10:09 pm

ive stripped out all my aircon lines when i took the engine out of the gtz.

ive now got a large idler(aircon unit) as it also runs the p/s belt.

ive noticed 3 lines that run off the inlet that go to this weird thing.

2 are big, one is small.

you can see the two big ones in this picture.(white clamps holding them together.
the small line "T's" into a line just below the ABV

these lines go into a little unit thing, which has a flathead adjusting screw in it, the screw is wraped in a spring, any thoughts?

can i just plug these up since ive removed aircon?

by **bluemaumau** » Tue Feb 27, 2007 10:35 pm

oh theres also a plug in this unit, but i have no matching plug on my custom loom, so obviously its something i dont need (like aircon) ill get a pic up of it tomorrow,

by **vvega** » Tue Feb 27, 2007 10:55 pm

checked that the idle up powersteering lines are connected??

v

by **bluemaumau** » Wed Feb 28, 2007 7:09 am

i dont have and have never had any thing electrical with the p/s

by **vvega** » Wed Feb 28, 2007 7:28 am

its a vacum line that comes from the back of the manifold to the powersteer

all toyota's with powerstere have them

by **big_boy** » Wed Feb 28, 2007 2:42 pm

this valve has nothing to do with the air con pump

its controled by the ECU

answer the questions up top & we can go from there

by **bluemaumau** » Wed Feb 28, 2007 5:07 pm

hmm, i havent seen one on the corolla when i took the 4afe out, and the gtz didnt have it either, altho the gtz did have to big lines off the back on the inlet/tb that are plugged up?

were does the p/s lines come from? (do you mean vaccum line or electrical line?) is it on the rack?

cheers

by **vvega** » Wed Feb 28, 2007 5:19 pm

on your rack there is a black fitting
1/4 bsp ...has 2 hose nipples on the top of it
...did i mention it was black so it prolly wont work... :d

normally one has a hose directly from the intake plenum on it
the other heads back to the inlet pipe before teh tbody

the purpose of this is as teh p/s fuild pressure rises it idles up the motor to give more assist and to stop it from stalling under load

its fine if you have blocked it off....though you wanna connect it anyways

wayne

by **bluemaumau** » Wed Feb 28, 2007 5:22 pm

big_boy wrote:this valve has nothing to do with the air con pump

its controled by the ECU

answer the questions up top & we can go from there

which valve ?

what q?

by **bluemaumau** » Wed Feb 28, 2007 7:44 pm

big_boy wrote:AC valve stuck open ??

is this it?

viewtopic.php?t=55316

by **big_boy** » Wed Feb 28, 2007 10:09 pm

bluemaumau wrote:
big_boy wrote:this valve has nothing to do with the air con pump

its controled by the ECU

answer the questions up top & we can go from there

which valve ?

what q?

2 tests is it high when its cold
& is it high when you engage the air con also if you leave it @ idle & engage & dissange the air con will the revs change & witch way

by **bluemaumau** » Wed Feb 28, 2007 10:32 pm

bluemaumau wrote:steady (1950rpm)

and i dont have aircon lines to the cabin, or anything electrically related to ac

by **big_boy** » Wed Feb 28, 2007 10:50 pm

im al most betting deffently on a by pass valve or AC idle up dew to a constance high idle

what happens if you disconect the pipe from manfold- rocker cover & block it off

AW11 Track Toy · by **Caveman** » Thu Mar 01, 2007 11:30 am

Someone will have to check me on this but I think the rotary solinoid controls the idle on the 4agze, it is ecu controlled. I have no idea how to set it up though as Ive never run a (pos) gze throttle body. Anyway txt me when your free next and have the crank pully, it may be easier to take the one off your car and mark it manually.

The timing is definatly wrong though which would contribute to the high idle. t1 and e1 dont effect idle speed which is strange...

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