Need more details...

I am not sure how well you know about cars. We all have very limited knowledge of them. So don't be offended if I offer my limited knowledge :).
You didn't explain "cold, or warm", did you mean the weather? or the engine temperature? There is a big a mount of coolant inside your radiator. When then engine is hot, the coolant circles, to let the heat out. When the engine is cold ( when you first start the car), then big amount of coolant is cut off--no circlation. So the engine temperature stays the same...therefore the needle stays at the middle all the time. Hope this helps.

所有跟帖： 

• Toiammadaboutu -saphie- ♂ (363 bytes) () 03/07/2010 postreply 16:34:19

• In that case, it is easy to check. -iammadaboutu- ♂ (774 bytes) () 03/07/2010 postreply 16:55:50

• It takes my toyotas 5-15 minutes-I think . -iammadaboutu- ♂ (0 bytes) () 03/07/2010 postreply 17:31:14

• 回复：In that case, it is easy to check. -saphie- ♂ (39 bytes) () 03/08/2010 postreply 08:26:55