[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Possible cure for low CAC coolant level
Howdy,
In the past, I've noticed that the coolant level in my CAC was normally
about 1/4 inch low, when cool. I've tried topping it up, but it always
went back down. After the last time someone posted about the same
problem on their truck, I decided to investigate a little more
thoroughly.
I followed the CAC overflow line to the coolant catch tank, and then
looked _inside_ the tank. That's when I noticed the hose _inside_ the
tank. This hose connects to the other side of the fitting on the rear
of the tank where the CAC overflow line connects. After nearly going
cross-eyed from trying to peer into the fill hole on the top of the
tank, I noticed that the end of the hose was hanging about an inch
_above_ the coolant. Ah Ha! This was the reason for the low coolant
level. When the CAC heats up, the excess coolant is venting properly
into the tank. However, when the coolant cools and shrinks, instead of
pulling more coolant back into the CAC (like it is supposed to), it
could only pull in air.
So... I pulled the loose end of the hose out through the fill hole on
the tank (using a screwdriver and needle-nose pliers. PITA). I then
fashioned a bob-weight from an old brass 5/16 T-fitting (cut off two of
the three hose barbs, file smooth any sharp edges, the hose goes on the
remaining barb), pushed it on the hose, and stuffed it all back into the
tank. The end of the hose was now immersed in the coolant, where it
should be. I topped up the CAC, and took my Ty for a long drive.
To make a long story short, it has been two weeks (driven daily) since
I did this, and the coolant level is still right at the fill neck of the
CAC. If your CAC coolant stays low, you may want to check the hose
inside the overflow tank.
Please let me know if this works for you.
Bill