What Is Correct Operating Temperature 4age

[LukeAE71]

Ok so I am running a 4AGE 20V ST in a RWD configuration and so have a custom cooling setup. It is a non-bypass system.

 

At the moment I am running an 85 degree thermostat and as it slowly opens the temp gets to probably 96 degrees before it is fully open and the coolant starts to do it's thing again.

 

What is the actual normal operating temperature for one of these motors?

 

I am wondering whether I should invest in a lower temperature thermostat but then I am concerned that the engine will run below the normal operating temperature and this is no good either. I understand that engines and their parts are designed to operate at desired temperatures due to tolerances etc.

 

Looking for some ideas and discussion thanks.

 

Luke

[Taz_Rx]

Not too sure on what its supposed to be for this motor, but you could probably find out pretty easy by checking some part numbers. The temp rating is normally the last couple of numbers in the part number, so look up a 20v in a Tridan catalogue and check. Sometimes there a couple of different temps per engine too.

 

Anywhere between 80-100* is fairly normal. Don't be too scared about 96* provided you have quality, correctly mixed coolant.

 

You might be as suprised I was to find out that the thermo fan in a V6 commonwhore doesn't actually turn on until temp reaches 103*C!!!!

 

Also worth checking your radiator is in decent condition. Does matter what temp you thermostat opens at, if your radiator can't displace heat as quick as the engine generates it then you always going to have an overheating problem.

 

:bash:

[LukeAE71]

Thanks Taz.

 

Radiator has been repaired and working well.

 

I am unsure when the fan turns on as it is triggered by the temp sensor and turned on at a set temperature by the ECU. I have been unwilling to play with too much on the dash display in case I f&&k something up. It is not triggered by a water temp sensor wired to the fan as those tridan ones are.

 

I now have some questions for the tuner today :bash:

[Taz_Rx]

What sort of ECU is it? AM or stock?

 

In my wolf 3d V4 its just a matter of going limits > thermo > Activate - ON > set an ON temp > set an OFF temp. My regualr running temp is between 81* and 83* so I have the thermo fan switching on at 95* and off at 85*.

Image most others AM ECU's would have the same sort of easily accessable settings, just a matter of finding them.

 

I'm assuming you do have an AM ECU with the mention of "dash display"?

[LukeAE71]

What sort of ECU is it? AM or stock?

 

In my wolf 3d V4 its just a matter of going limits > thermo > Activate - ON > set an ON temp > set an OFF temp. My regualr running temp is between 81* and 83* so I have the thermo fan switching on at 95* and off at 85*.

Image most others AM ECU's would have the same sort of easily accessable settings, just a matter of finding them.

 

I'm assuming you do have an AM ECU with the mention of "dash display"?

 

Microtech LT10S

 

I will get the tuner to run through how to use it. The book for it is still with the last mechanic and I haven't bothered to go down and collect it yet. At the moment I don't wanna play around with it. :bash:

[Taz_Rx]

http://www.microtechefi.com/software/ltmanual.pdf

 

PDF page 24, page 22 in bottom right corner.

 

AuxFAN_ON

This function allows the MT ECU to use the auxiliary output to switch an electronic fan on and off dependant

upon water temperature. Set the AuxRPM_ON and AuxMAP_ON functions to "OFF", then set the

AuxFAN_ON function to the temperature at which you wish the fan to switch on. The MT ECU will switch the

fan on when the coolant temperature reaches this value; the switch-off point is automatically set 5º lower than

the switch-on value.

 

AuxFANadd

If the Auxiliary output is being used to operate the thermo fan, this feature allows you to add extra fuel when

the fan is switched on. The figure in this screen represents the number of milliseconds to add to the injector

open time. Using this feature in combination with AuxFANair creates an “idle-up”, allowing you to

compensate for temperature change and the extra alternator load generated by electric fans.

 

AuxFANair

If the Auxiliary output is being used to operate the thermo fan, this feature allows you to open the cold air

bypass valve (if fitted) when the fan is switched on. The figure in this screen represents the amount you wish

the valve to be opened. Using this feature in combination with AuxFANadd creates an “idle-up”, allowing you

to compensate for temperature change and the extra alternator load generated by electric fans.

 

Told you it'd be easy. Even easier than my Wolf only because you don't need to set the OFF temp as well. :bash:

[LukeAE71]

^^^^ thanks :P :bash: