hello folks. i have a 92 honda civic sedan dx. i just change out the drier, ac compressor, expansion valve, climate control, new belts on my car. i went to a local mechanic shop and have the freon charge in. i have no leaks and my ac will blow out cold air for a good 5-10 mins after that ac compressor will shut off. i turn off the car and let it sit for like a good 10 min and turn it back on. the ac will kick back on and it will be cold again but will shut off after 5-10 min. does anyone know what causes this? can it be a bad relay? or pressure switch?

 

Does the condenser fan also shut off when the compressor clutch disengages or does the fan continue running?

 

hey @ronjo@ht. how you been? its been a while. yes the condenser fan still continue running when the ac compressor clutch disengage.

 

Been good. Thanks.

This^ rules out the pressure switch, thermostat, and heater control panel.

The problem could be a bad compressor clutch relay, ECU, or compressor clutch (gap or coil). Start by testing the relay, the armature plate/pulley gap, and the field coil.

 

the ac compressor is brand new from the local auto part store. that same problem was doing with the old ac compressor so i bought a new one thinking it that was the problem but it wasn't.

 

Test the relay.

 

if its not the relay, the last resort will be the ecu?

 

One step at a time. Start with the clutch relay. Test it or swap it with the condenser fan relay to see whether the compressor now operates properly.

 

yes sir! ahaha i get bit too excited sometimes when it getting closer to diagnosing it.

 

 

@ronj@ht - Sorry for late reply, but yeah it end up to be faulty relay. You're the man!