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> urgent help! Cooling system problems.
post Oct 24, 2012 - 1:26 AM
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KaneO

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I recently had my Celica with a 5sfe taken in to get a new radiator. problem being now is i think there is air traped inside. Tried Numerous times to bleed it.. what happens is when i take the car for a long drive and shut it down it dumps about a litter of coolant out the expansion tank and it also dose sometimes when the car is running.. Temp is normal according to the gauge and the car runs fine otherwise. I've taken it back to the mechanics and they failed to fix the problem. What's worse is i had plans to go on holidays and drive this car there. witch is less than a week away!

My bleeding procedure is the following so correct me if Im wrong.

Turn the heater to full hot. (fans off). Start the car with the rad cap off. using a small funnel wedged in there i top off the radiator. I then rev the car as it seems to help purge the air out. Wait for the bubbles to stop and shut the car off and refit the rad cap.

please help.
 
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post Jul 24, 2013 - 11:23 AM
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Toyo6g

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Buy when I turn the key the rad. Fan comes in.... Is never off.... That's the weird thing.... Even cold... I haven't use the car because of this prOblem.... I hate using my wife's car!!! 8( I'll try to check this today and see what happens!!
post Jul 26, 2013 - 9:33 AM
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Galcobar

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QUOTE (Toyo6g @ Jul 24, 2013 - 9:23 AM) *
Buy when I turn the key the rad. Fan comes in.... Is never off.... That's the weird thing.... Even cold... I haven't use the car because of this prOblem.... I hate using my wife's car!!! 8( I'll try to check this today and see what happens!!


As I said, Toyota designed the radiator fan to run unless the temperature switch turns it off. If the temperature fan switch/sensor fails, the fan will run constantly. If you unplug the fan switch/sensor, the fan will run constantly.

You can test this with a pot of water, a thermometer and a multimeter. Below 83C, there should be continuity between the terminal and the switch. Above 93C, there should be no continuity. Or as noted by other posters, turn the car on and let it idle. If the fan switch/sensor is working, the fan will only turn on once the engine reaches normal operating temperature, and then it should cycle on and off.

I'd still guess at the radiator cap being a problem. If the cap does not hold the correct pressure the coolant will boil, creating bubbles. Toyota parts are the best choice, though some aftermarket manufacturers such as Stant produce reasonable quality. The Toyota part number for a sixth-gen Celica radiator cap is 1640172090. Vehicles in which this cap was used: http://www.toyodiy.com/parts/xref?v=U_1996...mp;s=1640172090

Posts in this topic
- KaneO   urgent help! Cooling system problems.   Oct 24, 2012 - 1:26 AM
- - txnight   if you can afford it there is a funnel out there t...   Oct 24, 2012 - 1:33 AM
|- - KaneO   QUOTE (txnight @ Oct 24, 2012 - 2:33...   Oct 24, 2012 - 1:45 AM
- - soulshadow   they replace the thermostat? Sounds like your gett...   Oct 24, 2012 - 1:56 AM
- - txnight   ok using the funnel that you have, try this. Fill...   Oct 24, 2012 - 2:05 AM
- - Special_Edy   A blown headgasket will cause air to leak into the...   Oct 24, 2012 - 8:14 AM
- - trdproven   ^ yea if you use a funnel method for example and f...   Oct 24, 2012 - 6:23 PM
- - Galcobar   Couple items which spring to mind in regards to bl...   Oct 24, 2012 - 8:25 PM
- - Toyo6g   Well I have the same problem.... Kind of.... The r...   Jul 20, 2013 - 10:30 PM
- - Galcobar   Check the radiator cap. As for the radiator fan, y...   Jul 22, 2013 - 2:15 AM
- - Toyo6g   I alredy change the radiator cap.... Now I think ...   Jul 24, 2013 - 12:22 AM
- - bsamps4   QUOTE (Toyo6g @ Jul 24, 2013 - 12:22...   Jul 24, 2013 - 7:34 AM
- - Toyo6g   Buy when I turn the key the rad. Fan comes in.... ...   Jul 24, 2013 - 11:23 AM
|- - Galcobar   QUOTE (Toyo6g @ Jul 24, 2013 - 9:23 ...   Jul 26, 2013 - 9:33 AM
- - bsamps4   Switch may have failed in the open position, or th...   Jul 24, 2013 - 12:55 PM
- - Toyo6g   But it does... Ill try to buy this sensor today an...   Jul 24, 2013 - 1:04 PM
- - trdproven   radiator cap can also overflow the bottle blown h...   Jul 25, 2013 - 7:13 PM
- - Toyo6g   I think that the problem is the head gasket.... It...   Jul 25, 2013 - 10:44 PM
- - delusionz   complicated bleeding proceedures is bull****, fill...   Jul 25, 2013 - 11:00 PM
- - Toyo6g   update..... Blown head gasket.... there was a shor...   Aug 1, 2013 - 11:40 PM


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