General knowledge engine question.

[PatBuckley]

I think the radiator is plugged.

[jhv48]

Originally Posted by PatBuckley

I think the radiator is plugged.

Winner, winner! Remove it and send it to the radiator shop to check out the flow. Not completely plugged, but clogged just enough to inhibit full flow when it is needed the most.

[Woodz428]

Originally Posted by PatBuckley

I think the radiator is plugged.

I'd be leaning that way too. I had a Rod that looked fine in the top of the radiator, and I did everything ELSE to correct the problem. Since the radiator was the only thing left (pressure tested system to make sure there were no unseen leakage) I finally replaced it. I removed the side tanks for my own edification and there was at least a third and closer to a half of the lower section on both sides that was full of sediment from all the years. It would idle indefinetly without overheating, worked fine at lower speeds and around town, which is why I initially passed on it being the radiator, but once you started over the highway the temps would gradually increase to overheat. Problem disappeared immediately after. I really couldn't believe the crap in it, probably from a poor water source at some point( maybe several) over time.