coolant system


Asked by Dec 10, 2010 at 12:37 PM about the Ford F-250

Question type: Maintenance & Repair

truck has 460 ci that has duel fuel (gas and popane). problem is that there is always hot air coming from vents even when it is turned to cold. according to temp gauge it appears to always be runnin on the cool side. the truck has ac but it doesnt work. any ideas?

6 Answers

check vac lines under hood,they on driver side at firewall ,look for cracks,splits where they connect,softness in lines,the system is vac operated replace any bad line,are small black rubber hoses,also replace the valve that is connected to them,is usually under master cylender,is a plastic part,can get in the help section at any parts store.

1 of 1 people found this helpful.

cool, thanks! i just put a 2 inch lift in the front and now i got a camber issue, damn twin i beam i guess. does anyone know what that piece is called that i need to correct the problem?

to get the camber right you will have to have a aligement done,they will have to heat the I beams to get it right.

Check the vacuum lines at the back of the heater controls, then look under the dash and locate the blend box, is the plunger still attached? if it isnt it wont close the blend box door.

2 of 2 people found this helpful.

thanks jeff, the problem seamed to fix its self for now though. i am prity much rebuildin the whole truck and the only thing i havent touched is the engine and coolant system. i m crossin my fingers that they hold out for a while. love the truck and the big block fer sure, thank god for propane. thanks again, i will go snoopin around under dash tomorrow and check that plunger.


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