Running too hot

LESLIE ALLIN

MEMBER
1995 BUICK CENTURY
6 CYL
FWD
AUTOMATIC
237,000 MILES

1995 Buick Century 3.1 running very hot. Rad okay all hoses okay 195 thermostat new last year. Why is my Buick running so hot, especially in such cool temperatures

Monday, January 24th, 2011 AT 3:40 PM

3 Replies

JDL

MECHANIC
16,098 POSTS

What is the temp reading? Does the fan run? Where applicable, does the overflow bottle fill up in a hurry?

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Monday, January 24th, 2011 AT 4:01 PM

LESLIE ALLIN

MEMBER
2 POSTS

I do not have an actual reading just a gauge that usually runs between 3/4 and the hot (red line). Fan does kick in, but, I thought it should be running around 1/2 on temp gauge considering the cold weather.
As far a the overflow, it's nothing out of the normal.

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Monday, January 24th, 2011 AT 4:05 PM

JDL

MECHANIC
16,098 POSTS

When the fan kicks in, does the temp drop? If your fully obd 1, check mil codes. Does the fan kick on when you turn on ac? I would want to know actual temp reading, using something other than your gage, to compare readings. Overheating is a boil-over, it will pop the radiator cap and the catch bottle will fill up in a hurry. Just for testing, if you remove the thermostat, hook everything back up and test drive, any effect on the temp reading?

Some possibilities, water pump-- coolant temp sensor-- clogged coolant passage-- radiator cap-- combustion gases getting into the coolant-- fans not working like they should.

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