Harry---I too will assume you meant no blockage detected when the
radiator shop tested it. So..
I will suggest other things that could be causing the problem.
1) Retarded ignition timing. You should be seeing around 24 deg. BTDC
with the engine rpm at 2500.
2) The ignition retard line, if still connected, could be at the wrong
port, meaning timing could be retarded when off-idle. As with 1), check
with a timing light.
3) There is still cavitation taking place in the cooling system. Do the
"removal" drill.
4) The temp gauge is wrong. Does it show other signs of overheating,
such as the coolant overflow bottle fills up quickly after engine
shutdown?
5) Unless you're sure the thermostat is operating correctly, and in
right-side-up, take it out...just to test.
6) If the gas gauge is also reading high, check the connections at, or
replace the voltage stabilizer. (Behind the speedo)
Let us know what you unearth!
Dick
'73
Harry wrote:
My 72 TR has developed a overheating problem. When I measured the temp
on the radiator it varied from the top to bottom and from left to right.
I had the radiator checked out and the shop claimed that there was (?)
blockage. I then put the radiator back in and drove it 10 to 15
miles, and the car overheated again. I then put a new cap on the
radiator and got the same results - overheating. I was hoping that some
one might have some ideas about this problem
Thanks
Harry
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