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11-29-2004, 06:17 PM
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1st Gear
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Join Date: May 2004
Posts: 236
Level up: 43%, 116 Points needed |
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Bleeding coolant system
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My heater isn't working. David9999 suggested bleeding the coolant system. Um, how do you do that?
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11-29-2004, 06:40 PM
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6th Gear
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Join Date: Nov 2003
Location: Columbs, Ohio
Posts: 10,684
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RE: Bleeding coolant system
Did the heater just stop or did you do any work to the car?
Could be the temperature regulator flap motor - Do you have a Vag-Com to check for errors?
__________________
2005 A4 1.8tqm Avant
2004 VW Touareg
2005.5 Audi A4
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11-29-2004, 06:59 PM
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1st Gear
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Join Date: May 2004
Posts: 236
Level up: 43%, 116 Points needed |
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RE: Bleeding coolant system
No, I don't have a VAG COM. I KNOW I need to get one. I don't have a CEL. Could there be codes without a CEL?
About a month ago, I put in a new coolant temp sensor and had to refill the coolant. That's really all the work I've done that would affect coolant. I've never heard of bleeding a coolant system. (You don't have to do that on NORMAL cars) How do you do it?
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11-30-2004, 02:44 AM
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3rd Gear
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Join Date: Oct 2003
Location: United States
Posts: 1,853
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RE: Bleeding coolant system
yah just loosen the hose at the heater core and pull it out till you can see through the little hole in the top run the car with heater on till coolent comes out... on the 1.8T that is on the 2.8 it sugest bleeding it at the pump to...
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12-04-2004, 12:49 AM
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1st Gear
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Join Date: May 2004
Posts: 236
Level up: 43%, 116 Points needed |
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RE: Bleeding coolant system
OK, I bled it at the heater coolant hose as suggested. I couldn't see that any air came out though. Coolant came out almost immediatly. It still blows barely warm air. A little cool. Should I let coolant run out the little hose for a while? It seems to me that any air would be the first to come out.
BTW, what coolant do you all use?
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12-04-2004, 12:51 AM
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6th Gear
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Join Date: Nov 2003
Location: Columbs, Ohio
Posts: 10,684
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RE: Bleeding coolant system
ONLY use red G12 coolant.
__________________
2005 A4 1.8tqm Avant
2004 VW Touareg
2005.5 Audi A4
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12-04-2004, 12:57 AM
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1st Gear
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Join Date: May 2004
Posts: 236
Level up: 43%, 116 Points needed |
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RE: Bleeding coolant system
OK, now any ideas about the heater?
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12-04-2004, 01:25 AM
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6th Gear
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Join Date: Nov 2003
Location: Columbs, Ohio
Posts: 10,684
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RE: Bleeding coolant system
All I can think is a clogged/bum heater core.
There are 2 rubber pipes running from the engine bay into the cabin (attach to the "nipples" of the heater core), to the driver's side of the battery. Clamp the one on the driver's side so that your coolant doesn't go everywhere. Take an air hose , and while covering the outlet to the heater core, blow it out. If the air flows through, it's not clogged.
How are your engine temperatures after the car is warmed up?
__________________
2005 A4 1.8tqm Avant
2004 VW Touareg
2005.5 Audi A4
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12-04-2004, 01:27 AM
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Join Date: Jul 2004
Location: Austin, TX
Posts: 3,295
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RE: Bleeding coolant system
i hate the red coolant i bet you could use any coolant you wanted and it would work fine
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12-04-2004, 01:27 AM
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Tags
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18, 18t, 2003, a4, air, audi, b6, bleed, bleeding, coolant, coolent, cooling, system, tt, vw  |
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