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03 heater cools during idle

03AZExploder

Member
Joined
March 14, 2010
Messages
35
Reaction score
0
City, State
Phoenix, Arizona
Year, Model & Trim Level
2003 XLT
I've checked coolant level which seems to be fine, and my temperature gauge doesn't fluctuate at all. Is this more likely a heater core issue, or a water pump issue?
 




Hudsonf

Member
Joined
December 22, 2012
Messages
20
Reaction score
0
City, State
New Jersey
Year, Model & Trim Level
2005 Ford Explorer
Sounds like the cooling system may have a air pocket and needs bleeding.
 




rocco123

Well-Known Member
Joined
February 24, 2002
Messages
873
Reaction score
7
City, State
Endicott, NY
Year, Model & Trim Level
1994 XLT & 2002 Limited
Make sure u have vacuum at idle. If u do t have enough the valve will close at low rpm
 




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