bgilbert

Once warmed up on my 89 the temp would fluctuate between 170-160*. That 10* would conincide with the oem gauge bouncing around as normal like the rest of our trucks. On my auto truck with old oem, NAPA and new Cummins t-stat's the gauge is all over the place, but I have no mechanical gauge to confirm the actual temp.

I would not want the water temp over 215* for very long. For towing and to be sure, a mechanical temp gauge is the only way to go. The factory gauges are for the most part worthless.

BearKiller

Actually, I think it's more like 57-gallons; but YEAH, it has the Ford radiator.

Robert Wilbur

My gauge stuck at the first 1/4 when i first got it . However the head gasket leaked at the front passenger side which i am told is a-typical. Then i attempted to silver seal it.... Which worked but immediately after that began the 3/4 temp to quickly dropping to 1/4 and back. What bothers nee most is my newly complacent attitude over the temp. I haul a 3k # tool box ( intended for a dually) on the daily so im constantly hauling an s10 uphill and so far it always cools back just to heat right back up

Used bleeder screw to release trapped air, one theory i have is when head leaked the water jackets consistently had air could it not in contact with coolant sensor thus not giving accurate reading... Because now it's not leaking , or overheating but it runs all the way up and down.... I'm also considering the contacts on the cluster might be intermittent ( it swoops up and down aweful fast... Like fuel gauge at start up type fast)

Any thoughts?