My heater doesn't work

Breanna · 10-26-2007, 02:16 PM

My heater core isn't leaking.

Could it still be that?

What else could it be?

It blows hot for about 20 seconds then it's cold again.
If i turn it off and wait a few minutes i can get another burst of warm air..

Suggestions?
Winters a bitch, i need to fix this before i die of frostbite.

Ncturnal · 10-26-2007, 02:18 PM

Sounds like it could be clogged up. What does the coolant look like, ie. is it dirty, etc?

Breanna · 10-26-2007, 02:20 PM

It is rusty, but i just got a flush done about 2 weeks ago.
I know i'm going to need another flush, but shouldn't the first one have fixed the clogging parts a little?

55mr2 · 10-26-2007, 02:32 PM

Does it cycle warm and cold? Mine did that and I bled it. There were only a few bubbles that came up but apparently that was enough. It works great now.

Mister2.2 · 10-26-2007, 03:37 PM

Chances are high you have air in the system.

Breanna · 10-27-2007, 12:05 AM

Ah, How do i go about bleeding that? it is like brakes and clutch or is it completely different?

55mr2 · 10-27-2007, 01:11 AM

Basically the same.

Bleeding Air out of the MR2 Cooling System

Easier to do if you remove the frunk plastics . The plastic hose I used was 7/16".

It also seemed to help to turn the heater from hot to cold while the air was bleeding out.

(I see you've got a MKI. Hopefully the cooling system didn't change that much and the process is similar)

Luni · 10-27-2007, 10:04 AM

If you dont have any overheating issues, then you most likely just need to bleed the heater core.

There are 2 points of bleeding in the system. Try just bleeding out the heater core if youre not overheating.

10-26-2007, 02:16 PM	#1 (permalink)
Breanna Massive amounts of skill Join Date: Jul 2007 Location: Washington Posts: 52 Thanks: 0 Thanked 0 Times in 0 Posts iTrader Rating: (0/0% )	My heater doesn't work My heater core isn't leaking. Could it still be that? What else could it be? It blows hot for about 20 seconds then it's cold again. If i turn it off and wait a few minutes i can get another burst of warm air.. Suggestions? Winters a bitch, i need to fix this before i die of frostbite.

10-26-2007, 02:18 PM	#2 (permalink)
Ncturnal NoAgendaShow.com Join Date: Feb 2005 Posts: 7,446 Thanks: 94 Thanked 158 Times in 125 Posts Blog Entries: 7 My Google Map iTrader Rating: (37/100% )	Sounds like it could be clogged up. What does the coolant look like, ie. is it dirty, etc? __________________ Brian - My MR2Trader Ads - Click here for order or shipping status if you've bought something from me recently. Technical Questions - Please post them on the forums. Others who may have the same problem don't benefit from a PM exchange. If you wish to have my input I have no problem with a PM containing a link to a thread you have already posted.

10-26-2007, 03:37 PM	#5 (permalink)
Mister2.2 Cheese it! Join Date: Feb 2005 Posts: 6,561 Thanks: 121 Thanked 115 Times in 99 Posts Blog Entries: 1 My Google Map iTrader Rating: (3/100% )	Chances are high you have air in the system. __________________ --Josh MR2Trader.com Free to Buy and Sell your MR2 Parts!

10-27-2007, 01:11 AM	#7 (permalink)
55mr2 2Old2Give2Hoots Join Date: Jul 2007 Location: Winnipeg Posts: 351 Thanks: 10 Thanked 30 Times in 24 Posts My Google Map iTrader Rating: (3/100% )	Basically the same. Bleeding Air out of the MR2 Cooling System Easier to do if you remove the frunk plastics . The plastic hose I used was 7/16". It also seemed to help to turn the heater from hot to cold while the air was bleeding out. (I see you've got a MKI. Hopefully the cooling system didn't change that much and the process is similar) Last edited by 55mr2; 10-27-2007 at 01:33 AM.. Reason: Note to self... Check what forum you're in dumbass

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10-26-2007, 02:20 PM	#3 (permalink)
Breanna Massive amounts of skill Join Date: Jul 2007 Location: Washington Posts: 52 Thanks: 0 Thanked 0 Times in 0 Posts iTrader Rating: (0/0% )	It is rusty, but i just got a flush done about 2 weeks ago. I know i'm going to need another flush, but shouldn't the first one have fixed the clogging parts a little?

10-26-2007, 02:32 PM	#4 (permalink)
55mr2 2Old2Give2Hoots Join Date: Jul 2007 Location: Winnipeg Posts: 351 Thanks: 10 Thanked 30 Times in 24 Posts My Google Map iTrader Rating: (3/100% )	Does it cycle warm and cold? Mine did that and I bled it. There were only a few bubbles that came up but apparently that was enough. It works great now.

10-27-2007, 12:05 AM	#6 (permalink)
Breanna Massive amounts of skill Join Date: Jul 2007 Location: Washington Posts: 52 Thanks: 0 Thanked 0 Times in 0 Posts iTrader Rating: (0/0% )	Ah, How do i go about bleeding that? it is like brakes and clutch or is it completely different?

10-27-2007, 10:04 AM	#8 (permalink)
Luni Cage Fighter Join Date: Oct 2005 Location: Salt Lake City Utah Posts: 3,213 Thanks: 10 Thanked 130 Times in 110 Posts My Google Map iTrader Rating: (8/100% )	If you dont have any overheating issues, then you most likely just need to bleed the heater core. There are 2 points of bleeding in the system. Try just bleeding out the heater core if youre not overheating.