hey all. Just wondering if changing out the A/C compressor is that difficult. Or, if any of you have any recommendations for diagnosing the A/C system so that I can fix what is needed and not replace everything if I don't have to. Thanks again

 

I haven't done this on TSX, but appears similar to earlier Honda/Acuras. I checked shop manual and it doesn't look terrrible. Following are basics:

1) Recover refrigerant. Remove accessory belt.
2) Disconnect pax side fan and ac clutch connector from fan. Remove fan.
3) Remove AC connections to compressor and plug openings
4) Remove splash shield
5) Remove mounting bolts connecting compressor to engine bracket.

good luck

 

Well the first and obvious thing to do, if not done already, is buy a gauge and check the freon level. Mine stopped working, and it was just low on freon. Hey, with an older car, it happens. Just filled it back up and that's it.

Remember, the compressor won't turn on at all if its too low on freon, so if its not running, don't automatically figure the compressor is bad. Also, there is a relay which drives the compressor which are known to go bad as well. That's about a $25 fix also, if that's all it is. Again, all easy inexpensive stuff to do first before dropping cash on a compressor.

 

how can you tell if a relay has gone bad? Im having a tough time even removing it from the fuse box under the hood.

 

Easiest way is to swap one of the identical relays w/ the AC relay. If swapped circuit continues to function, the relay iis good. Relay just pulls out, but may take a bit of force.

Usual reasons for compressor not to engage:
1) refrigerant charge too low and hi/lo cut-off switch opens to prevent compressor from running (too low charge could prevent lubricant circulation)
2) AC relay (see above)
3) Compressor clutch coil has failed open (check resistance, it should be a few ohms).
4) Compressor clutch plate gap is excessive preventing coil field from pulling plate to closed position and turning compressor.

 

Take your car to a Honda service shop and have them do an A/C System check for $50. They can also replace the compressor if that is needed. Cheaper than an Acura dealer. Somewhere around $500 I think.

Some 04's failed in such a way that is pretty much required the replacement of the entire system. That cost several thousand bucks.