No heat!

Discussion in '1998 - 2011 Ford Ranger' started by DeanMk, May 16, 2017 at 12:45 AM.

  1. DeanMk

    DeanMk Member

    So I've got a 2.5L 4-cylinder in my '98 XL.
    No AC.
    Recently noticed a coolant leak emanating from the front of the radiator, so I got another radiator and took the opportunity to replace the (original!) hoses.
    Everything went pretty smoothly. I did receive the wrong lower hose, but that got fixed easily and quickly.
    Upon bleeding the system, I've found (what I think) is an air bubble in the heater core.
    The rest of the system seems to work fine (upper hose gets nice and warm. Must've drove the truck 20 miles an it never overheated), but the temp gauge never registers and I get no heat through the defroster.
    I tried the old Escort trick of jacking up the front end and letting the truck run. I even held the rpm up a little for a few minutes, but to no avail.
    The heater hoses are barely warm, the gauge reads below "C" and I get no heat in the cab.
    As I write this, its about 10:30 in the evening and I've decided to leave it sit, with the front slightly elevated and the cap lose.
    I have to admit, even with years of automotive repair experience under my belt, I really don't know what else to do here.

    Anyone else ever run across this problem with their Ranger?
    How did you fix it?

    At this point, I'm hoping that it will eventually blow the air bubble out.


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