Chevrolet Repair: Automobile air conditionaing, center vent, magnetic clutch

Question
I own a 1996 S-10 Blazer, 4.3 engine, 4WD, automatic trans, with air.  The air works but when on the max-air setting it does not appear to move as much air as it used to.  I assume that because it does cool the car that the fuses, etc, are OK, but it doesn't get cold very fast, even on days when the outside temp. isn't that high.  Can the high blower relay be bad even if the blower works?  What should the temperature difference be at the vent compared to ambient?  How long should it take to get to temp?

Any help would be great!

Thanks,

Joe

Answer
Inside air vent temp depends upon:

air temp of the day.

humidity iof the day.

Engine speed.

Efficiency of the A/C system.


If you can get a CENTER vent temp of 42 degrees within 10 minutes of starting the engine at an outside temp of 80 degrees, I see NO PROBLEMS.

Look on the cover of the fuse panel and it states what size fuse to install. NEVER EVER install a higher rated fuse than what is recommended or you will start destroying expensive electronic components.

It is highly likely that you have a problem with the MAGNETIC CLUTCH that is mounter and replaceable on the front of the A/C compressor and or the wiring connector at the compressor is touching something and shorting out.

What mechanical work or ANY kind of work has been performed on the vehicle recently ?. As most problems that occur after a recent repair was made can be traced back to the area of where the repair was made as a vacuum line may have been knocked loose or a wire connection came loose, Look around in the area where work was performed.


autohelp


When measuring CENTER VENT temp the blower MUST be on LOW speed.