Idles rough while AC is on

mistiso78

Member
:
MAZDA, PROTEGE ES
My 01 Protege ES has rough idle only when the AC is on. What can I do to fix that? I replaced the plugs, wires and ignition packs. Help...


Thanks
Chad
 
How do you motor mounts look? If they are starting to tear, it could possibly be that. Check on the front motor mount and on the passenger side mount those usually tend to go.......good luck
 
Does the idle turn up slightly when the a/c compressor comes on? It should.

I assume this is different form the normal load the a/c compressor and electric fan put on the engine at idle.

Could be a sign of a weak alternator as well.

Or the EGR is starting to clog up.
 

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