Originally Posted by tebby
Temp gauge normal at 50-70mph. As soon as I stop or proceed slowly...temp gauge rises. Got the temp gauge to rise while parked w tach around 3k for 4-5 mins. As far as I know I have original radiator w 124k miles...so I know I prob need to replace that as well. Will was able to order me the correct part and replacing in the am. Will see what happens.
Ok so you have one of 2 issues. Insufficient cooling capacity or excess heat being generated. The fan clutch may or may not be working and changing might help but won't solve this.
Assuming you aren't losing water I would suggest a few things. Radiator is most obvious. Might be blocked at the bottom restricting the flow of water round the engine. You can check this but seeing if it's cold at the bottom when the top is hot. Solution is new rad, re-core or maybe a flush.
Another possibility is the water pump. If it's corroded away internally it might not be moving enough water.
The other issue may be you are generating too much heat ... This means that heat from combustion is getting straight into the water. That would suggest a head gasket or cylinder head type issues. You would experience some water loss at some point.
Good luck ..!!!