MY HEAT'S NOT HEATING RIGHT ??? HELP???

[jason]

I HAVE A 2005 F-250 W/ 6.O POWERSTROKE. MY HEATER WILL NOT GET HOT MOST OF THE TIME, JUST BARELY WARM ! AND WHEN OR IF IT DOES GET HOT, IT ONLY STAYS HOT FOR AROUND 10 TO 15 MINS, THEN GOES SORT OF LUKE-WARM ! IT SEEMS TO BE HOTTER WHEN IT'S IN THE DASH VENTS, BUT WHEN YOU TURN ON THE DEFROSTER, OR FLOOR, IT GETS COOLER ??? DOES ANYONE KNOW WHAT COULD BE CAUSING THIS???

THANKS, JASON

[14mins]

I am having the same issue with my 2005 also. I did not notice the problem last year and the only change is the egr cooler delete.

[Davey~do]

What are your coolant temps? Do you have any way to monitor them besides the dash gauge? I'd look at your thermostat first and see if that's the issue.

[dantry]

First check an make sure you have enough coolant. As simple as that sounds it could be a start.

[POWERED SPARKLESS]

Originally Posted by dantry

First check an make sure you have enough coolant. As simple as that sounds it could be a start.

A little low and it wont hold the 18 psi needed.

[Krump's brother]

These guys are right. I just went through this and I needed a new degas bottle cap ($12) and a bottle of Ford Premium Gold coolant. It was seeping out of the degas bottle. Good luck.