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Engine Overheating 200 1985

"it is clear to me that I have not articulated the problem with sufficient clarity. Let me try again."

Huh? Maybe it's how you said it.

"This is because I have installed the lowest temp thermo Volvo has. Before I did this the guage read exactly in the middle as I am use to from my other 245s and as it is suppose to be."

Try putting the old one back. Maybe you have a defective thermostat. Insufficient flow-through even though it has opened. (The upper rad hose is supposed to be warm/hot if the thermostat is open on a warm engine.)

"Next the mechanic placed his fingers against the whirring blades and as he did so the fan slowed and stopped. His comment was, "I should not be able to do this, unless the clutch is bad" IS THIS A VALID TEST. It seems to me that unless the clutch has engaqed, of course, he would be able to stop the fan with his hand."

Was that with his three remaining fingers? A valid test? Dunno, but I wonder how he checks his circular saw, lawnmower etc.

"Is ther any way to check. THe mixture has a thick greenish appearance. My tester shows 5 out of 5 colored balls floating and the chart that came with the tester suggests this establishes protection against freezing to minus 45 degrees farenheit. This is what leads me to the pure anti freeze theory."

It just checks for density. I think anything 70 and over will cause all to float. Take a glass. Put a mark on it to denote 100. Fill it to 70 with antifreeze from your car. Add water to reach the mark. Test. If the balls all float then probably you have 100 percent in your system.

"Should I drain the radiator and start with a new mixture. Or how much mixture should I remove in order to have a propery mix, assuming it is pure anti freeze, now. I can always use my tester to be sure I am not loosing the anti freeze entirely."

The problem is you will need to run the engine for a while after adding water to ensure proper mixing before you test. However people on this board suggest 50/50 is fine, so you have a bit of leeway.




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'80..245..M46...b21a..SU carb..






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New Engine Overheating [200][1985]
posted by  Robert M. Franklin  on Sun Jun 29 20:46 CST 2003 >


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