Heat problem
Senior Member
Joined: Jun 2007
Posts: 589
Likes: 2
From: Hampton Roads, VA
RE: Heat problem
If it were the water pump, the car would run hot. Top off your coolant/antifreeze. Large reservoir, top right corner under the bonnet. You're the second one today that's had this issue, lol.
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RE: Heat problem
My coolant tank has stress fractures in it, which is being replaced tomorrow.Right nowmy heat is non-existant in this cold weather. Trying to keep the antifreeze/coolant level up by refilling it. Heater only runs when I'm on the highway 50pmh or more. Runs cold when driving locally. Once coolant tank is replaced, will this fix my heater problem?
Senior Member
Joined: Dec 2008
Posts: 337
Likes: 13
From: Seattle, WA
RE: Heat problem
Maguar, sounds like you might have this problem (I just cross-posted it on the other thread from today).
http://consumerguideauto.howstuffworks.com/2002-to-2008-jaguar-x-type-2.htm
Coolant leak: Coolant loss from broken expansion tank bleed tube could lead to overheating. (2002-06)
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I'm surprised they have to replace the whole expansion tank. Can't they just replace the bleed tube?
http://consumerguideauto.howstuffworks.com/2002-to-2008-jaguar-x-type-2.htm
Coolant leak: Coolant loss from broken expansion tank bleed tube could lead to overheating. (2002-06)
[/align]
I'm surprised they have to replace the whole expansion tank. Can't they just replace the bleed tube?
Joined: Jan 2009
Posts: 526
Likes: 62
From: Motorcity
RE: Heat problem
General heater diagnosis. First off it has been between -10 and -20 F here for the last few days, don't expect your heater to produce the same amount of heat output as if it were +20.
Make sure the system is full, heat that flucuates when you rev the engine or drive at high speeds can indicate extreme cold, or an air pocket in the system, primarily the heater core. It can also indicate a sticking open t-stat or restricted heater core. You can check the t-stat and heater corewith an infrared heat sensing gun by checking inlet and outlet temps. If you have high mileage either could be the cause though t-stats on the Xs are much more common than heater core problems.
Make sure the system is full, heat that flucuates when you rev the engine or drive at high speeds can indicate extreme cold, or an air pocket in the system, primarily the heater core. It can also indicate a sticking open t-stat or restricted heater core. You can check the t-stat and heater corewith an infrared heat sensing gun by checking inlet and outlet temps. If you have high mileage either could be the cause though t-stats on the Xs are much more common than heater core problems.
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Posts: n/a
RE: Heat problem
Thank you!
I will keep that in mind for any future similar issues.
My mechanic said that therewere several smallcracks located on the plastic tank itself. The leak was coming from the tank itself and not the bleed tube.
I'm looking forward to finally having my heat back!
I will keep that in mind for any future similar issues.
My mechanic said that therewere several smallcracks located on the plastic tank itself. The leak was coming from the tank itself and not the bleed tube.
I'm looking forward to finally having my heat back!
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Senior Member
Joined: Sep 2008
Posts: 677
Likes: 37
From: Rocky Mountains
RE: Heat problem
Hey Real_Tech:
elsewhere in one of these threads you gave some really good tips on how to make sure your coolant is full, with no air bubbles, etc.
I would think that would make a VERY USEFUL FAQ.
Ansd I could sure use the tips myself, since I can't seem to find that thread right now.
elsewhere in one of these threads you gave some really good tips on how to make sure your coolant is full, with no air bubbles, etc.
I would think that would make a VERY USEFUL FAQ.
Ansd I could sure use the tips myself, since I can't seem to find that thread right now.
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