1997 Pontiac Bonneville "ac heating work" Questions

heater control wont heat. AC and fan works fine When turn on the defrost Ac comes on as when turn on the mode AC comes on .Turn off AC and hit auto and raise temperature but no heat. Any ideas would ...

ac blows heated air When it first warms up & ac running but it blows heated air.then tommorow the ac works fine.its done it twice this past week. Bring the vehicle to a certified HVAC technican as

...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 ...

A/C air flow problem I've taken my '93 pontiac bonneville in to serveral different shops and they all have said that there is nothing wrong with my a/c, but when my car sits in the sun for several ...

...work when I want them to? If the heater is on, ac air will not be cold as hot air is mixed. You need to open the dashboard and check for the struck hot setting lever. Probably a competent AC workshop ...

...AC - the garage is 240 miles south - they should fix it again kuz she only used it for a few months after they made it work, but we are here, they are there, and now she has to go back down there 240 ...

work Hi, Turn off AC and see if there is actual heat coming out of the heater. Check duct work that they are not blocked or broken. Check heater core for leaks and blockages. Check radiator thermostat

Blower fan not working for heat and AC fuse or resister

...the vents in the car for the automatic climate control. It's supposed to open all vents to the AC feed when in AC mode. BUT, if it slips loose, the default status is to feed heat through (you

...heating/AC is a Vaccuumn controlled system. If you have a leak or a blockage (pinched tubing) your system will not work. It is rare, but I found that the controller is actually the cause of the ...