How do I know if it is the AC compressor or fan causing AC/Heater to intermittently stop working?


Asked by May 20, 2015 at 10:38 PM about the 2003 Buick Century Base

Question type: Shopping & Pricing

The air conditioner/heater of my 2003 Buick Century (156,000 miles) periodically stops
working for no obvious reason and can begin working again, also without any obvious
cause. I took the car to my local Firestone and was told it is the ac compressor and the
charge for fixing it is $1100. I don't think my car is even worth that much. Also, would
the compressor affect the heater too? My husband thinks it is a problem with the fan,
possibly a short. What do you think?

3 Answers


I recommend calling 3 garages for estimates near you to hear what each says. Because its going off when heating , thats not the cool air conditioning system. Possible loose wire under dash or fan wearing or something hitting its blades. Call another firestone?


Or faulty pressure switch,or relay.


If the fan is coming on and off it's going to be the blower motor, resistor block for the blower motor (a GM trouble spot), the blower motor relay, or the blower motor speed switch on the dash. I'd suspect the resistor block, or fan switch. In that order. HTH. -Jim

Your Answer

Add photo

Related Questions


Looking for a Used Century in your area?

CarGurus has 1,269 nationwide Century listings starting at $3,295.


Search Buick Century Questions

Buick Century Experts

#1 John Saffrahn
John Saffrahn
Reputation 840
#2 Tom Demyan
Tom Demyan
Reputation 640
#3 LtColumbo
Reputation 300
View All

Related Models For Sale

Used Buick LeSabre"
19 Great Deals out of 2,612 listings starting at $1,950
Used Buick Regal"
183 Great Deals out of 10,658 listings starting at $2,195
Used Chevrolet Impala"
928 Great Deals out of 35,693 listings starting at $1,500
Used Buick Park Avenue"
614 listings starting at $5,995
Used Toyota Camry"
1,601 Great Deals out of 98,436 listings starting at $895
Used Ford Taurus"
356 Great Deals out of 23,100 listings starting at $1,400
Used Honda Accord"
1,262 Great Deals out of 78,683 listings starting at $1,400
Used Chevrolet Malibu"
1,151 Great Deals out of 73,017 listings starting at $695
Used Nissan Altima"
1,351 Great Deals out of 87,430 listings starting at $1,095
Used Pontiac Grand Prix"
30 Great Deals out of 4,358 listings starting at $1,995
Used Lincoln Town Car"
46 Great Deals out of 2,364 listings starting at $1,542