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larry bourbeau

larry ... 2/4/2019

2013 Buick LaCrosse CXS 6 Cyl 3.60L

Engine

2013 buick lacrosse 6 cyl at cold start warning says "air conditioner off du to engine overheating

cold start warning " air conditioner off as engine overheating" auxiliary cooling comes on immediately and temperature gauge does not does not move from coldest setting. When engine is turned off auxilary fan continues to run for about 5 minutes even though engine is NOT overheating

1 Answer


Jimm

Jimm 2/4/2019

Several possibilities; incorrect coolant mixture (anti-freeze and water not at 50/50 mixture), faulty coolant temperature sensor, faulty coolant temperature sensor wiring and/or connection - to list only a few.

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