airborne72
1/10/2008 11:38:14 AM
I have a 1993 ranger, when it warms up the coolant comes inside the truck.
this does not happen when the a/c is on.
oldtimer35
1/10/2008 8:12:49 PM
You have a bad heater core. The reason it doesn't do it with the a/c on is because you have a hot water valve that shuts coolant off to the core with the a/c engaged.
