heating issues
Thread Starter
|
New User
Joined: Oct 2006
Posts: 9
Likes: 0
heating issues
got a 97 f150 4x4 4.6 automatic, 88k miles. just bought it, and i am having some heating issues. when i turn the heat **** to full, it actually blows cold air. i removed the **** thinking it might be cracked, and all is fine. also the upper hose, is not hot at all, even after the truck running for a good 15-20 minutes, and the heater core hoses are warm, but not hot. im leaning towards t-stat, but wanted to pick your brains. is the t-stat a hard change?> im assuming no, since ive done it before on other vehicles.
Moderator
Joined: Dec 2001
Posts: 22,436
Likes: 17
From: Louisville,Ky.
Welcome to the forum.
The thermostat is on to and easy to access.
I am wondering if you actually have a temperature blend door problem in the ductwork. I have read of these breaking. Does the temp gauge go about 1/2 way up after running for a bit?
The thermostat is on to and easy to access.
I am wondering if you actually have a temperature blend door problem in the ductwork. I have read of these breaking. Does the temp gauge go about 1/2 way up after running for a bit?
Senior User
Joined: Nov 2006
Posts: 252
Likes: 0
air in the system could explain the cold upper hose. But you shouldnt have air in there all of the sudden. If you just had a flush or changed the coolant you should take off the reservoir cap and run the engine til hot, it will self bleed. If you dont think that is a problem at all then look to the blend door or the blend door motors that change the position of the door. Its pretty much an R-R the ENTIRE dash job, so get some good info before you go digging in.
Thread
Thread Starter
Forum
Replies
Last Post
apropos
Explorer, Sport Trac, Mountaineer & Aviator
1
Nov 21, 2007 01:25 PM
Faithful Old Road Dog
1967 - 1972 F-100 & Larger F-Series Trucks
7
Jan 10, 2004 12:21 AM
