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How To Keep a BA I6 Cool? 

 

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 Post subject: How To Keep a BA I6 Cool?
Posted: Tue Dec 16, 2008 2:56 pm 
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hey all... having some trouble with the misses BA Fairmont...
My AU lives at about 4000rms and hasn't ever gone over 1/4 of the temp gauge - only ever have coolant overflow after a service (when overflow is filled to max)
Yet the BA will jump up to 1/2 temp and cover my driveway in coolant (completely empties the overflow) every time i drive up my road (its 2kms of fairly steep hill) or if i give it a bit (over say 4500rpms) so iv had the engine flushed which included a few gaskets and a overflow cap and that didn't do much... now thinking of getting a new radiator (FTG has "BA NEW 6CYL RADIATORS $125" at the moment)... any other recommendations....?

The running temp of the AU did drop a little when i got the extractors... but i already had the catback... would extractors + a larger intake also help...?

Cheers Cam

 

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Posted: Tue Dec 16, 2008 4:16 pm 
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The BA is supposed to run slightly under halfway the gauge, just the thermostat they have in them. It shouldn't overflow, was the system bled for air when the coolant was changed?

 

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Posted: Tue Dec 16, 2008 4:19 pm 
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Thermostat, My XR6T did the same thing

 

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Posted: Tue Dec 16, 2008 5:50 pm 
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fnp wrote:
The BA is supposed to run slightly under halfway the gauge, just the thermostat they have in them. It shouldn't overflow, was the system bled for air when the coolant was changed?
natrad "Flushed The Engine" would this include new coolant...? if so id say they bled the system....

 

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Posted: Sun Dec 21, 2008 3:06 pm 
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has also had a new thermostat... im now fairly sure that iv never heard the thermofans turn on... whats the best way of testing... can i just connect 12V to the loom or what???

 

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Posted: Sun Dec 21, 2008 11:55 pm 
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check for coolent level, run the motor hot with all the heater vents open on full.

check the pressure cap too

 

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 Post subject: headgasket
Posted: Mon Dec 22, 2008 12:58 am 
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Unless you have done a headgasket, that can pressurise overflow bottle when engine turned off. I would get a new cap too i once thought i did a headgasket and it turned out to be a cap. :D
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Posted: Mon Dec 22, 2008 10:31 am 
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Why don't you swap over the thermostat to a lower temperature/earlier opening one? That way the thermos kick in earlier and the thermostat opens earlier. this may help it and its cheap to do.

 

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Posted: Mon Dec 22, 2008 10:55 am 
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andrewsfutura wrote:
Why don't you swap over the thermostat to a lower temperature/earlier opening one? That way the thermos kick in earlier and the thermostat opens earlier. this may help it and its cheap to do.


the thermostat doesn't tell the thermo's to kick in. a temp sensor does

 

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Posted: Mon Dec 22, 2008 11:24 am 
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top up the coolant and run the motor with the capp off the overflow bottle.. watch it and see if you get any bubbles....

if theres nothing,, put a new cap on it.. if there is you've got a headgasket problem.

it doesnt sound like its dumping the coolant due to temperature.. halfway on the gauge isnt that hot.



-mitch

 

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Posted: Tue Dec 23, 2008 5:06 pm 
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WILDEB wrote:
andrewsfutura wrote:
Why don't you swap over the thermostat to a lower temperature/earlier opening one? That way the thermos kick in earlier and the thermostat opens earlier. this may help it and its cheap to do.


the thermostat doesn't tell the thermo's to kick in. a temp sensor does



Maybe the temp-sensor is screwed......and the ECU is not getting the message?.......but then again if the temp senser was faulty it wouldnt be showing high temp on the dash gauge.

 

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Posted: Tue Dec 23, 2008 5:46 pm 
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thats what i'm saying. the thermostat doen't tell the fans to turn on. but if the temp sender is s**t it might not engage them

 

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Posted: Tue Dec 23, 2008 7:04 pm 
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the fans are turning on when i turn the a/c on but they arnt loud like most cars... had to put a torch on to see then turn on/off...

 

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Posted: Wed Dec 31, 2008 1:15 am 
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my ba runs just under half ever since i got it. dumping overflow coolant suggests to me a blocked over flow hose to the radiator.
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