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Heater core HELP!!!!


 
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Billy's89XJ
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Joined: 03 Jul 2004
Location: I'm the Charlie Browniest

PostPosted: Thu Feb 24, 2005 4:56 pm    Post subject: Heater core HELP!!!! Reply with quote

Okay, many of you know at the wrenching party for FM2CD I replaced the thermostat with a HD one to get more heat rofl Well it's like this... I have heat, enough to be warm with the fan on high. If I stop I can feel some nice warm air, give it gas, the colder it gets angry So now I believe it's the heater core or that valve that has the vacumm line on it?? Any ideas?? The main reason for this is I thought.. go get new core, some hose & Anti-freeze, cut the valve off and be done?? WRONG angry Now the book says I have to drain the A/C and remove some lines?? Is this true?? What the furious Anyone done this? HELP rofl rofl
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ThePhantum
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Joined: 23 Jan 2004
Location: I knew it...I'm surrounded by Assholes!

PostPosted: Thu Feb 24, 2005 8:13 pm    Post subject: Reply with quote

You've got the closed cooling system on that. The first thing I would suggest is convertng to open. It's not all that expensive to do...prolly around $2-$300, which includes the cost of a new radiator. You could also get away with adding a filler neck and an overflow bottle and do it for less than $100.

Now with the heater valve, rememeber even though you are running heat, the A/C runs to help dry the air before it is heated. The heater valve in the closed system on older XJ's allows some hot water to always pass through the heater core and makes your A/C have to work that much harder. The heater valves in newer XJ's with open systems close off the heater core entirely when the heat is not on, not allowing any water into it.

We can talk about it this weekend and figure out what to do with it.
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