comanche91
NAXJA Forum User
- Location
- Sweet Home Alabama
91 Comanche, open cooling system
Just went under the hood to check something and noticed the upper radiator hose was completely collapsed. The truck had been sitting for about six hours, and had no overheading problems when driving this morning.
Popped the rad cap, heard some pressure escape, the cooling level was down a bit, so I topped it off, no more than a half-pint or so. The overflow tank level was higher than normal, about 1" from the top, over the FULL mark. Started it up, warmed it up to 210, no leaks but the overflow tank level went even little higher. Went for a drive, the temp gauge stayed normal. Returned, popped the hood, and the overflow tank was still about 1" from the top, way higher than normal. The upper hose still seemed mushy, but not collapsed.
Only thing I can think of is I might have a bad rad cap and it's not allowing the pressure after shutoff to vent to the overflow tank. But what would cause the overflow tank to be over the FULL mark, and the upper hose to collapse? The hoses are fairly new, and it's never done this before. Thanks, all advice appreciated.
Just went under the hood to check something and noticed the upper radiator hose was completely collapsed. The truck had been sitting for about six hours, and had no overheading problems when driving this morning.
Popped the rad cap, heard some pressure escape, the cooling level was down a bit, so I topped it off, no more than a half-pint or so. The overflow tank level was higher than normal, about 1" from the top, over the FULL mark. Started it up, warmed it up to 210, no leaks but the overflow tank level went even little higher. Went for a drive, the temp gauge stayed normal. Returned, popped the hood, and the overflow tank was still about 1" from the top, way higher than normal. The upper hose still seemed mushy, but not collapsed.
Only thing I can think of is I might have a bad rad cap and it's not allowing the pressure after shutoff to vent to the overflow tank. But what would cause the overflow tank to be over the FULL mark, and the upper hose to collapse? The hoses are fairly new, and it's never done this before. Thanks, all advice appreciated.
Last edited: