My fan for the AC/Heat only works intermittently. I can turn the switch on but the fan doesn't turn on. It might be that way for weeks. Then out of no where it will work for a few days to a few hours. When it does work, once I turn the car off the fan usually won't work the next time I turn the car on. Any ideas?
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If the fans work, (I'm guessing there are two of them) only when the A/C is on, then it means that the temperature sensor is damage. If possible, have a professional take a look at it. Both fans are OK,
I assume it's the 3.8 V6? They are notorious for intake gasket problems. The fan problem could be a few things, fuse, relay, ECT (electronic coolant temp sensor), ECM, Do the fans come on when you run the A/C? Hope this gives you some ideas. Let me know a little more and I'll try to help. TJ
Hi, If you start out with a cold engine, the Bonneville should not overheat traveling one mile, with out the A/C on. If you are in stop and go traffic, roll your windows down, turn heater on high temp and high fan, and shut the Bonneville off at stop lights. Watch the heat gauge. The coolant fans not working may be a fuse, relay, or temperature sending unit switch. Best Wishes, Wayne
the vaccum control switch on the dash is bad. it is a funny looking little black thing with several hose hookups on it. remove the control knob for switching from ac top vent to floor vent.very inexpensive. not easy to replace