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heater and ac problems

B

brady22

New member
new to this site and im out of ideas to find out whats wrong with my grand prix without spending a significant amount of money on it,
the heat worked last winter.. now it doesnt. the ac never has worked sice i bought it, i recharged it and got nothing. the main issue is this heat problem, ive been told it could be a heater core, but also that it could just be backed up?? any ideas
 


good chance your blend door actuators took a dump on you.

here's the write up to change them. http://www.grandprixforums.net/blend-door-actuator-replacement-21941.html if you take the glove box off and with the car running change the temp on the climate control and watch the little hole in the actuator to see if it moves at all.

you can also grab each heater hose to see if they are both hot, if so, the core is flowing.

or your climate control has died, or the outside temp sensors not working right.
 
not dumb at all. if you dont ask how else would you learn?

thats what we all do, try to save cash. my car has yet to be to a real garage since i bought it. only the alignment shop, thats it.
 
right on, well ill try those things first and see what it is. i have air flow through the vents, just not hot/warm.
im not even sure if my thermostat is working right, im letting the car idle up to temp to see as we speek
 
well the fans kick on and the car doesnt overheat so its not the thermostat. one line is hot and the other is just warm, almost cool compared to the other one.
 


you can take off both heater hoses, off the alt bracket, take a garden hose to either hose, it dont matter, and flush the core, you should get the same flow out as what is going into the core from the hose. a nice medium flow works well, you dont want to get yourself soaked.

its possible that the core is air locked as well. so when you finish flushing it out, keep both hoses as full of water as you can and put them back on.

then bleed the coolant system.
 
okay i have to wait till my women gets home to watch my son, then i will try your suggestion. i also just noticed that some plastic line up near the fuel lines is broken, when i disconnected it.. it made the main coolant line go flat, then reconnected it as if it werent broken, and it worked fine... idk what this part is, never noticed it broken
 
that would be a vacuum hose. not sure ive ever seen a vac hose removed make the upper hose (im guessing to the rad) collapse.

most of the time they stall out if the vac leak is to big. i'd fix that vac hose either way.

if your stumped on the vac hose repair, post a pic of whats broken.
 
thank you for the welcoming, and i flushed my whole coolant system, now i have awesome heat. and as far aas the vaccume hose, i found out that the rubber fittings were dry rotted so i replaced them and now she runs fine.
 


brady22 said:
thank you for the welcoming, and i flushed my whole coolant system, now i have awesome heat. and as far aas the vaccume hose, i found out that the rubber fittings were dry rotted so i replaced them and now she runs fine.
Click to expand...

Sometimes that's all it takes. I had luke warm heat in my jeep and flushed the heater core with a garden hose and a ton of gunk came out of it. The heat has been perfect since.
 
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