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Cooling fans
2007 Buick Lucerne

Cooling fans

(2007 Buick Lucerne)
I have '07 buick luceren 3.8.. My fans not coming on unless I use my AC. Just replaced radiator due to crack. It goes between cool & hot very quickly, to the half way mark. With in three blocks of driven it. Please help!
What seems to make the problem better or worse? not using ac
How long have you had this problem? winter last year
Tags: fans wont come on, unless ac on, buick, lucerne
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Popular Answer
on March 28, 2019
Could be a bad coolant temp sensor. Use a scanner to see what it's reading and make sure it's plugged in.

Alex
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General Diagnosis
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on March 28, 2019
Could be a bad coolant temp sensor. Use a scanner to see what it's reading and make sure it's plugged in.

Alex
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