Toyspeed

evil_evo wrote:
I am kinda new to this and I was trying to figure out where is idle control valve

It may not have one as with e-throttle they can just use that.

Running on Avgas or similar may help too. Maybe an ethanol blend, but would take a bit of figuring out the Eth %,
as too much Eth% and the fuel required goes up, which on the standard ECU wont be adjustable.

Have you adjusted the fuel mixture under load by playing with the AFM spring settings ...

Plug gap.
Got a BA Falcon that had the same issue. Stutter when cold, got better when hot. Guy replaced coils and was still there.

Gap was 1.7mm!


Thats a common issue on the Falcons, as the factory gap on them in either 1.3 or 1.5mm from memory,
and the coils have a weak arse spark anyway.
We ...

Going from your explanation it really sounds like a failing coil.
They are hard to tell which one though.

Sometimes it is just as easy to get one, fit it to cyl 1 and try it.
If not fixed try cyl 2, then 3 then 4 etc.

OR see if there is a fault code in the system,
possibly not though from a coil ...

We have a 2005 Fielder Z with the 2zz and 6 speed, Basically a Runx wagon, before that we had a BZT Carib Wagon.

We had the Carib for 10 years, and will probably have the Fielder for the same, have had it 7 years so far.

I reckon that for a daily driver road car, if you buy a decent car that you ...

Why not just go to the local auto electrian and buy what you want? Surely they sell it in different colours and sizes?
I know we do. There is not an endless amount of colours in all the sizes, but quite a decent range.

Otherwise go and pull some looms out of some cars at pick a part or something ...

Is yours a pre-facelift?

We have a 2005 ZZE123 Fielder Z aerotourer on stock wheels and they are 16".

Yes first thing to check is the actual battery voltage while cranking.

It happens even on standard Toyota's at work sometimes,
the starter motors are so good on them that they will crank fine with a buggered battery,
but not enough voltage to run the ECU.
Usually you can tell as the car will ...

They will be replacing the injectors the seat seals? and the injector pipes ,
and probably using genuine injectors.

The injectors are not serviceable, only replacable,
we have done a set in one of our vans,
and can be done for less than that,'
but probably not at a Toyota Dealership

You would possibly find that if you free up the exhaust you may not be able to keep the boost standard,
as the extra flow will raise the boost.

Temp gauge road driving shows about 92C
Electric fans come on about 90C as best I can tell


The radiator fans should not need to be on under normal road driving,
as the airflow should be enough to keep it cool.
Fans should only be needed when stationary or going slow,
at speed fans are a ...

If you work the lock/unlock switch on the door you may hear the module click under the dash, or some of them it is inside the window master switch.
Possibly a purple and white wire?

You need to disconnect the speed signal wire from the central locking ECU.

you will need an external voltage reducer as the camera's on toyota's run on 6 volts from the headunit,
12 volts is not good for them.

Easiest way is to have the original headunit working in reverse with the picture on the display
and unplug cables to see which ones stop the camera.

We have done ...

Found this video and found it quite interesting,

recognized a couple of starlet's,
couple of AE86 Trueno's and what looked like a 2 door DX corolla?

https://www.youtube.com/watch?v=mQNIBUpBGv8

.. a couple of people saying that they did it and it wasn't worth it.

Is that the way with every conversion when you can buy the correct thing to start with.

We have a 2ZZGE fielder and they are great, but swapping from the base spec to the 2ZZ
wont be as good and will cost you more,
and when ...

I have seen inside some toyota ECU's where #10 and #20 are actually linked inside the ecu too.

Was probably an early 4age ECU as I have not had many other ones apart.


Also if you remove the heatshrink and there is solder there,
it is not factory, as all factory joins will be crimped only.

Side note: if anyone knows the correct thermostat for a silvertop that'd be great too. Supercheap guy said their computer has them all wrong


Blacktop and silvertop 20V thermostats are different sizes and do not interchange.
Just as cheap from toyota with a good discount as they are at repco ...

have you just fitted a new stereo?

For country's that don't car about emissions and don't have 02 sensors.