My car is only blowing hot air, compressor works fine but always hot. Put Freon in and that worked for about two weeks and hot again. Had it inspected and they said they could not find any leaks. Please help.

Asked by Jul 25, 2015 at 07:36 PM about the 2001 Buick Century Custom

Question type: Maintenance & Repair

22 Answers

20,255

LEAK IN SYSTEM..SEE ANY OIL AROUND ANY HOSE FITTINGS/HARD PARTS??/..OR ..A VACUUM LINE

No oil, no leaks that are visible. Vacuum line? Where? How?

17,660

Is the compressor clicking on and off ?

yes it is firebird338...it blows really strong air but is very hot...

17,660

Because like Kelly said if you had freon put in system and it worked for two weeks and its hot again it has to be a leak now if you said the system is full and still blowing hot air that is a different story.

17,660

Leak must be in the evaporator in the vehicle where you can not see.

But its weird, I had it to a shop and they ran some liquid through it and could not find any leaks at all. So how do I test the evaporator?

17,660

I am going to recommend something that I used before and it worked great. R134a refrigerant stop leak put some in a friends vehicle last summer and I talked to him just the other day and its still cold.

1 out of 1 people think this is helpful.

Sweet thank you firebird338, I will try that :). Wish me luck.

20,255

HEATER DOOR ALSO...BUT HEATHER TURN IT ON AND AC AND FEEL THE AC HOSE UNDER THE HOOD GOING INSIDE THE CAR IF ITS COLD IF IT IS THERES SOME?FREON IN THE SYSTEM...IF ITS COLD AT THE FIRE WALL AREA..THEN ITS A HEATER DOOR/ARM/MOTOR/VACUUM HEATER CONTROL VALVE..AND SO ON..

17,660

To get to the evaporator you have to take underneath the dash out the heater / A.C box.

Ok thank you everyone!!!

20,255

IS IT LOW ON FREON OR NOT ?1

Hose is not cold when on.

20,255

DONT DO ANYTHING UNTIL YOU FIND OUT IF THE FREON IS LOW/OUT AGAIN...

Ok will do Kelly.

20,255

WELL IS THE CLUTCH KICKING ON AND OFF???

Clutch? Its an automatic, but yes compressor is going on and off.

20,255

HAAHAA YES COMPRESSOR..OK SO A SHOP PUT SOM FLUORESCENCES IN THE SYSTEM AND CHECKED IT WITH A BLUE LIGHT?? CAUSE A LEAK THAT BAD WILL SHOW UP EVEN UNDER THE DASH...YOU SURE YOU DONT SEE ANY OIL SEEPING /DARK FILM WET ANYWHERE?

20,255

FIREBIRD...I WOULD NOT PUT A SEALER IN?? ESPECIALLY WITH A GM ORIFICE TUBE...

17,660

Hey Kelly this is the way that I look at it its either going to work or not work but its worth a try.

20,255

YEA IF THERES A LEAK... MAYBE...

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