Just to help with my own diagnosis - when you say it stays at 80, is that in stop start traffic as well?

Thanks

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1990 300TE

"24 hours in the day. 24 beers in a case. Coincidence? I don't think so."

Ummm.. I think it's fixed

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1998 C230 330,000 miles (currently dead of second failed EIS, yours will fail too, turning you into the dealer's personal human cash machine)
1988 F150 144,000 miles (leaks all the colors of the rainbow)
Previous stars: 1981 Brava 210,000 miles, 1978 128 150,000 miles, 1977 B200 Van 175,000 miles, 1972 Vega (great, if rusty, car), 1972 Celica, 1986.5 Supra

I meant diagnosis with my own car's heating problems - the thread helped anyway.

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1990 300TE

"24 hours in the day. 24 beers in a case. Coincidence? I don't think so."

Warning never use Bar stop leaks in import radiators.It will harden into a brick in your rad.
Alumia Seal works good.

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1999 w140, quit voting to old, and to old to fight, a god damned veteran, deutschland deutschland uber alles uber alles in der welt

Benzme, The car stays at 80° pretty much all of the time now. Its a little higher if you stop at the store and stop the engine for a minuet but then goes right back to its normal operating temp. The fan was okay, good resistance when you tried to spin it by hand. Stops immediately when you shut down the motor. When I tried to flush the old radiator with water and air it did seem like it went through alright, then I reinstalled it. When the car started to get hot, I shut it down and used a laser thermometer to check different areas of the radiator. That indicated the radiator wasn't flowing (cooling) properly. Now its working well.

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1986 300sdl
1984 300sd
1988 300se
1973 vw thing