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take out the sending unit (with engine cool) I took a small metal container and heated it up with a torch. use a kitchen thermometer to monitor the temp. You must ground the sending unit and drop it in. When I did my test my water was at 185 degrees F and my gauge was pegged all the way to hot...

different guy different opinion for sure ! I took out the sending unit, grounded it and boiled some water to about 186 degrees. The result was the (new temp gauge) registered -hot-. These guys were trying to talk me into a new engine. Plus offered me, get this, One thousand five hundred dollars...

I have the I6 258.......Im still not convinced that I have a major problem with the block... when I measured the outside of the block with my infrared thermometer I came up with (after an hour of idling) 216 degrees right at the sending unit and lower on the block same 194. Up front on...

I thought perhaps that my new temp gauge was bad because it would move all the way to hot but the actual block temp was only 140F. I recently had my jeep at a local shop trying to get my weber adjusted. He said that the reason the temp is showing hot is due to a crack or obstruction in a water...

I found the problem ! Either the new temp gauge or the sending unit is inop. I checked the block temp with a laser temp unit and its fine.........One more question, I'm starting to consider an engine swap to a chevy small block. What kind of mileage can I expect.

I have a straight six 258.

OK, I took out the thermostat ran for 30 min no problem. Drilled a small hole on edge of thermostat (by the way it test fine -195-) re-installed. Ran and overheated. Pulled the water pump, The fins match the old one so its the correct pump. I'm sooooooooooooooooooo confused, and tired of this...

When I bought the water pump I had the old one with me and we compared the two. But now I'm beginning to doubt what I thought was the same pump. I'm not ready just yet to take it off again. I did notice that the original thermostat had a small hole for (I think) air relief. The new one didn't...

My fuel gauge needed replacing so I replaced both fuel and temp gauge. during the process I was checking my temp sending unit and discovered it was unplugged ! I have no idea how long this has been unplugged but never had any indication of overheating plus the old gauge never went above half...