I've got a '86 that is doing the same thing. Flushed the system, made sure the radiator was clear of junk, replaced the reservoir, res cap and hose, added new radiator cap, new water pump, relays work, etc.

The fan is intermittent, but a mechanic friend swears just the fan wouldn't cause it to overheat. Runs fine on interstate, but when in stop and go traffic it blows and smokes.

Recommend replace the fan? What else? Thanks...

 

They put fans on em for a reason. I would replace the fan if you know its bad. You replace the T-Stat ?

 

yeah, covered that too...wasn't until recently found out fan was working intermittently, other times checking it was good to go.

 

camarodude, did you ever fix this issue?

This is like my first post in years...I miss by baby

 

Mine will get hot if the A/C isn't on