Re: 245 overheating
"Arnold" <Arnold@nospam.com> wrote in message
> Hi there, my 1993 245 is overheating, the temp gauge was working
> erratically, so I did not know for sure if it was overheating. Bypassed
> temp compensating board in the instrument cluster and started the car, put
> the AC on and left it on my driveway for about 10 minutes, the outside
> was about 86 degrees. The car did not overheat, and the gauge is just a
> hair above 9. There is no coolant consumption and no air bubbles on the
> coolant. The pump was replaced about 7 months ago with a new thermostat
> belts. When the car is hot, I feel the fan in the engine compartment
> pulling air through the radiator, but when I shut the car the fan blades
> feel like they are spinning too easily (viscous clutch ng?). My wife took
> the car for a spin and noticed that the car was overheating when it was
> climbing hills, the temp almost reached the red zone. turning the AC off
> and putting the heat full blast cooled the car down. I checked the
> and it is good. I intend to check the engine compression, remove the fan,
> hose the radiator from the engine compartment out, to clear any bugs, dirt
> etc, then temporarily bypass the thermostat and JB weld the fan, so it is
> always on.
> Any suggestions, will be greatly appreciated.
> arnold_perez13 at verizon dot com
The viscous couplers don't have a very good life expectancy. A bad one will
allow the engine to overheat at idle on a hot day, and on low speed hill
climbing, but cool down rapidly (in a few minutes) once the air gets flowing
through the radiator again.
Your plan sounds pretty good, but JB Welding the fan clutch may be wasted
effort. I recommend replacing it, but aftermarket units are expensive
enough. Genuine Volvo units are downright expensive.