another heater problem

nicnet · 11-21-2007, 11:37 PM

Burping was done on a really good incline, but not for hours (20 mins max), so it could be a possibility to try again.

I'm working on the theory that it's not the heater core - mainly on the basis that I can't face taking the whole dashboard out. Naive? Perhaps.

Got another working theory, suggested in a thread over on http://toyotaownersclub.com/
Could be worn out solder joints on the heater control panel.
Took it out this evening, and re-soldered all the joints (some of them were looking a bit sad).
Put it back in, and heating was working ok, at least for the short time I tried it.
That proves nothing yet though - I need to take it out for a longer run tomorrow.

If not working ,then I'll try a longer burp (excuse me!), and also look at this air mix control servo, as I still think that's a possibility.
If still no joy, then yes, I'll have to really consider the heater core itself.

supramacist · 11-22-2007, 01:33 AM

Some guys spend countless hours burping the system.

Then some of us just make it routine maintenance.

Some guys say up to 5. 10. 15. hours.

Kicking the engine over, moves the air bubble around.

It's nothing to burp. Just set it up on ramps and check on it every 15 minutes and when it looks lower. Fill it up with a 50/50 mix of coolant and distilled water.

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11-21-2007, 11:37 PM	#1
nicnet Stock Join Date: Oct 2007 Location: finland Posts: 7	Burping was done on a really good incline, but not for hours (20 mins max), so it could be a possibility to try again. I'm working on the theory that it's not the heater core - mainly on the basis that I can't face taking the whole dashboard out. Naive? Perhaps. Got another working theory, suggested in a thread over on http://toyotaownersclub.com/ Could be worn out solder joints on the heater control panel. Took it out this evening, and re-soldered all the joints (some of them were looking a bit sad). Put it back in, and heating was working ok, at least for the short time I tried it. That proves nothing yet though - I need to take it out for a longer run tomorrow. If not working ,then I'll try a longer burp (excuse me!), and also look at this air mix control servo, as I still think that's a possibility. If still no joy, then yes, I'll have to really consider the heater core itself.

11-22-2007, 01:33 AM	#2
supramacist 1000whp postwhore Join Date: Apr 2007 Location: Escape from the Prison Planet Posts: 1,356	Some guys spend countless hours burping the system. Then some of us just make it routine maintenance. Some guys say up to 5. 10. 15. hours. Kicking the engine over, moves the air bubble around. It's nothing to burp. Just set it up on ramps and check on it every 15 minutes and when it looks lower. Fill it up with a 50/50 mix of coolant and distilled water.