wth happened?

MA70-3.0GT · 12-08-2009, 03:27 PM

Just a quickie, not sure where you took the car for the rad/ job, but did you make them aware of the bleed procedure for this car? i.e. lifting the front way in the air...

cre · 12-08-2009, 07:23 PM

That's not a special Toyota proceedure by any means. A clean and readily flowing cooling system should bleed the air out pretty quickly. I never "burp" my system. I just fill the overflow completely, turn the heater on and let the car warm up a idle... then let it cool back down. I'll check it again in a week after that unless I hear the token "waterfall in the dash" sound indicating more air still moving through the heater core.

Krem · 12-08-2009, 07:45 PM

Quote:

Originally Posted by MA70-3.0GT

Just a quickie, not sure where you took the car for the rad/ job, but did you make them aware of the bleed procedure for this car? i.e. lifting the front way in the air...

This explains why after my thermostat and hoses were replaced during my flush and also after this radiator repair, I had to add more coolant to the system after driving it just a little bit... I was wondering about that..

Cre: you mentioned something about running your heater... is this a normal step in the process? what if my heater's not working cause I have no water in the heater hose? Last I cracked that open, it had nothing more than a mm deep puddle about 2 cm long and 1cm wide..

cre · 12-08-2009, 08:29 PM

The heater is supplied hot water via the coolant system... it's plumbed right into it. If your heater system is dry and the rest of the system is still full of coolant you've got bigger problems than burping a few cc's of air.

You always have to top off the coolant after a flush and fill. There will ALWAYS be air trapped in the system, doesn't matter what car it is.

Krem · 12-08-2009, 10:10 PM

what problems could I have if there's no water in the heater hose? cause short of no working heater, I don't see, feel or hear any other issues...

cre · 12-08-2009, 10:16 PM

If the coolant system was full and your heater hoses didn't have any coolant in them you'd be looking at some very serious blockages... frankly, I don't see how it's possible for the system to get that clogged up as it would have to be clogged on both sides. How did you determine the heater circuit was empty? And was the coolant system actually full?

Lack of hot air when the heater is on is usually due to the VSV for the heater control valve dying. It's easily bypassed until it can be replaced... it's been posted on here before, try searching for the specifics if you think that may be relevant.

Krem · 12-08-2009, 10:37 PM

Once I removed the "Prestone" cap in the picture, I could see inside to an empty hose w/ the puddle I described in an earlier post.. dunno if it helps, hopefully I'm lookin in the wrong hose cause I don't want any more blockages... I've spent almost $500 just trying to get my cooling fixed... atm, it's better than it ever has been, but if that IS the heater hose and it SHOULD have water in it, I'd have to guess that my cooling SYSTEM is still in need of TLC... :\ :'(

cre · 12-08-2009, 10:41 PM

That's the highest point in the cooling system.... it's more likely that you had air trapped in the system and it collected there once the vehicle was off and cold. (It's also the best place to "burp" the system if you need to.

)

12-08-2009, 03:27 PM	#1
MA70-3.0GT 12psi boost Join Date: Oct 2009 Location: Crewe, England Posts: 356	Just a quickie, not sure where you took the car for the rad/ job, but did you make them aware of the bleed procedure for this car? i.e. lifting the front way in the air... __________________ '89 MA70 Supra GT aero 3.0turbo JDM, Rebuilt motor, K&N intake, 3" stainless turbo-back. New turbo and braided line kit... '89 Honda NC27 400, NC23 cams, open pipe, PC36a shock & possibly Showa USD forks... '83 Yamaha 29R XJ750E-II, number 69 off the line, only runner in the country? Original except Koni shocks '95 Honda PC26 CB500R, Winter hack, hateful, trying to sell it I'm not paranoid, they really ARE after me!!!

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12-08-2009, 07:23 PM	#2
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	That's not a special Toyota proceedure by any means. A clean and readily flowing cooling system should bleed the air out pretty quickly. I never "burp" my system. I just fill the overflow completely, turn the heater on and let the car warm up a idle... then let it cool back down. I'll check it again in a week after that unless I hear the token "waterfall in the dash" sound indicating more air still moving through the heater core.

12-08-2009, 08:29 PM	#4
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	The heater is supplied hot water via the coolant system... it's plumbed right into it. If your heater system is dry and the rest of the system is still full of coolant you've got bigger problems than burping a few cc's of air. You always have to top off the coolant after a flush and fill. There will ALWAYS be air trapped in the system, doesn't matter what car it is.

12-08-2009, 10:10 PM	#5
Krem 3" Exhaust Join Date: Sep 2009 Location: Las Vegas Posts: 167	what problems could I have if there's no water in the heater hose? cause short of no working heater, I don't see, feel or hear any other issues...

12-08-2009, 10:16 PM	#6
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	If the coolant system was full and your heater hoses didn't have any coolant in them you'd be looking at some very serious blockages... frankly, I don't see how it's possible for the system to get that clogged up as it would have to be clogged on both sides. How did you determine the heater circuit was empty? And was the coolant system actually full? Lack of hot air when the heater is on is usually due to the VSV for the heater control valve dying. It's easily bypassed until it can be replaced... it's been posted on here before, try searching for the specifics if you think that may be relevant.

12-08-2009, 10:37 PM	#7
Krem 3" Exhaust Join Date: Sep 2009 Location: Las Vegas Posts: 167	Once I removed the "Prestone" cap in the picture, I could see inside to an empty hose w/ the puddle I described in an earlier post.. dunno if it helps, hopefully I'm lookin in the wrong hose cause I don't want any more blockages... I've spent almost $500 just trying to get my cooling fixed... atm, it's better than it ever has been, but if that IS the heater hose and it SHOULD have water in it, I'd have to guess that my cooling SYSTEM is still in need of TLC... :\ :'(

12-08-2009, 10:41 PM	#8
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	That's the highest point in the cooling system.... it's more likely that you had air trapped in the system and it collected there once the vehicle was off and cold. (It's also the best place to "burp" the system if you need to. )