IT'S ALIVE :o .......just

[Corona]

I’ve just got the 3S-GTE in the Corona running this weekend.
Saturday 1:54pm for thoes that are interested in births.

What a big job for one person to do mostly on there own. It's still got some tidying up to do, mostly of the wires and the air intake, but the bulk of the work is done.

Anyway, A couple of Questions.

The Engine won’t idle very well. I have adjusted the Idle screw on the Throttle to MAX, but it is still running rough. The only way that I can get it to idle is to use the left foot method. I can’t see any hoses anywhere that should be blocked. The only one I have that is going to the outside world is the tube that goes to the throttle body.

The Speed sensor Wires, I have them going to the Instrument cluster, which one of the 2 wires do I use to connect to the ECU? It is unconnected at the moment.

Do I need to connect the Fuel Pump Relay and Resistor up, as it is not at the moment.

The Temp Gauge will go from cold to Hot in one easy step. Ah I thought I will get the one from the engine I took out, that will solve the problem. No same thing. Could this be an earthing thing?

Where is a good place that I can go to get it tuned once I get these few problems sorted out?

Thanks All.


Neil

[ee904age]

Good to hear man, Chickenman will be oh so proud! Any pics???

P.S. Whats the left foot method? Driving with your legs crossed??

[Corona]

Oops, yea, that is suppose to read "Right Foot Method" Got my lefts and rights mixed up.

Will post Pix when I get the pix off the camera and find somewhere to host them.

[Adamal]

Oops, yea, that is suppose to read "Right Foot Method" Got my lefts and rights mixed up.

Don't worry man, happens to me all the time

Which is pretty bad, seeing as I'm a left handed person and part of a minority in the world!

[ee904age]

Will post Pix when I get the pix off the camera and find somewhere to host them.

Just setup a free account at www.photobucket.com . Im not sure how much space they give you but its worked for me, so far I think Ive got 10m/b on there

[Corona]

I have the idle problem sorted out now, but does anybody know about the other questions?

[Malcolm]

fuel pump relay doesn't need to be connected, only if you want to operate it with high/lo fuel pump switching like they run as standard, most people ditch this so I wouldn't bother installing unless you want to improve fuel economy.

There should be 3 wires going to the speed sensor I thought? Unless it's different in Coronas. Anyway, is one of them blue with black stripe? If so, that's the one you want to connect

[Malcolm]

oh and i forgot to say, that's excellent news that it's running! Nice to know that engine I got wasn't a dud! Is it still leaking oil?

[matt dunn]

There should be 3 wires going to the speed sensor I thought? Unless it's different in Coronas. Anyway, is one of them blue with black stripe? If so, that's the one you want to connect

I would have said none of them.

Usually the three wires to the sender are power signal and earth but only go to the speedo. Then the speedo has another output signal that goes to the engine ECU.

Matt

[Corona]

oh and i forgot to say, that's excellent news that it's running! Nice to know that engine I got wasn't a dud! Is it still leaking oil?

Thanks for that. I got the Oil leak sorted out before I got the engine out of Chickenmans car. It was the oil feed to the Turbo was only done up finger tight. 3/8 Bar on that and hasnt leaked since

There should be 3 wires going to the speed sensor I thought? Unless it's different in Coronas. Anyway, is one of them blue with black stripe? If so, that's the one you want to connect

I would have said none of them.

Usually the three wires to the sender are power signal and earth but only go to the speedo. Then the speedo has another output signal that goes to the engine ECU.

Matt

Ok, Now I am confused. I know there are 3 wires that go to the sender unit. (Its too dark to go out to have a look at colours, and it is raining as well) 1 is a common to most of the sensors, and the other 2 come into the pasenger bay and then go to (I assume) the speedo as it is working fine.
There is also a pin on the ECU that is is labled as a speed sensor.

If indeed Mr Toyota did hook the ECU up to the Sensor directly, then why did the loom that I got with the engine not have it hooked up at factory? I also cant see Mr Toyota waisting wire sending the signal back to a place that it has already come from?

Also what benifit does it provide to the ECU to have it connected?

[matt dunn]

There is also a pin on the ECU that is is labled as a speed sensor.

It is actually labeled speed signal, not speed sensor as it is not connected to the speed sensor in the gearbox.

Not all signals are the same and compatable.

Think of it this way,

There are three wires on the sensor, the earth,
( which will be the brown? one that is also connected to all the other sensors)
A power feed and a signal that both go from the speedo head to the sender unit.
The signal that the sender outs out is and AC waveform.
This goes to the speedo in the dash cluster and is shown as speed on the gauge. the electronics of the gauge also convert the signal from an AC waveform to a DC pulse which then goes from the dash to the ecu.

Reason is because the ECU cannot read an AC pulse.

Matt

[Corona]

Himm, Ok. I'll have to have a look at the wires again then at some time to see what goes where. I'll leave it unpluged at the moment as it is running fine as it is.

Now the only thing left to sort out is the Temp Gague.

[cr1mnl]

Now the only thing left to sort out is the Temp Gague.

and then and come and sort out mine cos it does exactly the same thing

glad to here shes a goer

[Malcolm]

the electronics of the gauge also convert the signal from an AC waveform to a DC pulse which then goes from the dash to the ecu.

Reason is because the ECU cannot read an AC pulse.

I don't believe that this is true, infact I know it isn't.

The wire labelled "SPD" on the ECU comes straight from the speed sensor, and is the Blue w/ White stripe wire I mentioned earlier (did I say blue with black last time? oops!). This is confirmed by the wiring diagram I have right in front of me. Some cars, particularly ones using cable driven speedos, generate a signal for the ECU from the speedometer, but this is not the case in an st185 gtfour. If you're using the electronic speed sensor from the gt4, or if your corona has the same one (which I would bet it doeS), then it should definitely be as I described.
To be fair though, the ECU doesn't need it, it just activates speed cut, but it will throw an error code if it's not connected.

[matt dunn]

I don't believe that this is true, infact I know it isn't.

Maybe not in all cases.

In My AE111 BZT it is.

Matt

[Malcolm]

yes, but this is specifically relating to a GT-Four ecu, which is what I was refering to. I'm not trying to claim every single car is like that, hence why I said "Some cars, particularly ones using cable driven speedos, generate a signal for the ECU from the speedometer, but this is not the case in an st185 gtfour"

[Chickenman]

Sooo glad that this all worked out for you dude, I was worried about ripping you off.

oh and i forgot to say, that's excellent news that it's running! Nice to know that engine I got wasn't a dud! Is it still leaking oil?

Thanks for that. I got the Oil leak sorted out before I got the engine out of Chickenmans car. It was the oil feed to the Turbo was only done up finger tight. 3/8 Bar on that and hasnt leaked since

Damn, It's a pity the straw that broke the camels back was something so simple
I wont be up north for a long time but would love to see some pics dude.

Legend

[Corona]

Sooo glad that this all worked out for you dude, I was worried about ripping you off.

So am I, would not have been happy if it didnt go.

I wont be up north for a long time but would love to see some pics dude.

Legend

Yea, Working on the Pix now, should have something tomorrow, unless you want Hi Res ones

[Corona]

Now the only thing left to sort out is the Temp Gague.

and then and come and sort out mine cos it does exactly the same thing

glad to here shes a goer

Got the Temp Gague Fixed. What it was is there is an earth that goes from the Temp Gague back to the Earth point on the Manafold. I had one plug unconnected (as I assumed that all the wires were to do with A/C) and one of the wires on that plug were for the Temp Earth. Connected it up, and works as it should