06 Kia Sedona. AC comp fuse blows when the ac is turned on a few times. Where do I start to find the problem?
There is really nothing in the circuit between the A/C fuse and the compressor except the A/C compressor relay.
There is a service bulletin on the A/C compressor, it is KT2007081504. It states that the compressor clutch should be inspected for wear and noise.
If you suspect the field coil circuit has an open circuit or ground (short to ground), check the resistance between the field coil and compressor housing. Resistance specification at 70°F: HALLA Manufacturer Specification: 3 - 4 ohms / DOOWON Manufacturer Specification: 2.8 - 3.2 ohms. If the resistance is less / more than the specification, replace the field coil assembly following the service procedure in this bulletin.
With the engine turned off, replace the A/C compressor fuse and disconnect the plug at the A/C compressor coil. Turn on the ignition and see if the fuse blow, if it doesn't then the problem is probably in the compressor coil.
If it still blows, then replace the fuse with the key off and disconnect the A/C compressor relay, turn the key on and see if it blows. If it doesn't blow then the problem is probably the compressor relay.
If it still blows then the problem is between the A/C compressor fuse and the compressor relay.
You can get a complete wire schematic for your 2006 KIA at ALLDATAdiy.com
Please keep us informed on your progress.
Last edited by TechHelp2 (6/10/2010 9:50 PM)
Replaced the fuse for the third time, and couldn't get it to blow. Turned the AC on and off, drove around the block a couple of times, ran it on high and low, etc. It wouldn't blow. My wife ran some errands in the car, ac worked fine. A few hours later, I got in the car and the fuse blew. Any ideas why it would be delayed for so long? Given this information, do you still recommend that I follow the steps you outlined earlier? Your feedback is greatly appreciated...
It sounds like there is a possible short in the wire harness, at certain times it will blow when you take a turn or hit a bump in the road. You need to check the wire harness from the A/C compressor in the engine compartment to the Relay Panel. Somewhere it is probably just touching the metal chassis of the car, or a support bracket and grounding out causing a short.
The service bulletins I mentioned still should be considered on the A/C compressor coil. It may be shorting out internally especially when it gets hot. Try to replace the fuse and unplug the A/C compressor and drive around, if the fuse still blows then you know it is in the wire harness and not the A/C compressor coil.
As ridiculous as this sounds, you should compare you're driving habits to your wife's driving habits? If it doesn't blow with her driving, observe what she does like where she puts her feet, the way she takes turns and stops and also the roads she takes. Sometimes a problem like this can be diagnosed by observing certain habits. If it blows for you and not her, you need to figure out what you do that she doesn't to help you get to the problem area.
Check the first two suggestions first. The third one is for last resorts.
As always keep us informed.