Air in cooling system
Thread Starter
|
Junior Member
Joined: Dec 2004
Posts: 8
Likes: 0
From: Pottstown, Pa
Air in cooling system
Can anyone tell me how to get the air out of my cooling system? 2004 F-150 FX-4 5.4 engine. Changed coolant the other day, now my temp gauge fluctuates from 1/4 mark to 1/2 mark. Someone here said most likely air in system but did not go into detail on how to get it out. Help please!
Thanks
Thanks
Senior Member
Joined: Mar 2001
Posts: 4,506
Likes: 6
From: Puyallup, WA
Try running it with the rad cap off. Take it around the block a couple of times. Enough to get it to full operating temp. With no pressure in the system, the air bubbles should work their way out.
Mitch
Mitch
Senior Member
Joined: Jun 2002
Posts: 4,293
Likes: 6
Another trick I always use is to remove the hose that comes off the front of the intake and runs to the heater core. Just keep an eye on the intake and add your water until it starts to run out that tube. Reinstall the hose and top off. Then do the run with the cap off thing...although that's not as effective as it is on a vehicle that still has a cap actually on the radiator.