Dodge Avenger Problem Report
Dodge Avenger Knocking Noise From the AC Compressor
A knocking sound my be heard from the engine at times with the air conditioning on. The cause could be the AC compressor itself, if that is the case there is an updated AC compressor to correct this issue.
I hear a knocking noise that seems to be coming from the under the glove compartment. I only hear it when i turn on the air conditioner. So frustrating since i just replaced the alternator, pulleys and serpentine belt. What else is going to go wrong with this car....its only 4yrs old. - Visitor
Knocking noise happens after I turn off the heat or air conditioning... Goes away after a few knocks but is annoying and load when it happens ... - Visitor
When the a/c is on it is fine. A loud knocking noise starts when you turn on the recirculate button on the a/c. Eventually it will quit. Sometimes it makes this noise when the a/c is turned off. Turn it on and it quits. - Visitor
I hear a knocking sound from the dash when I turn on the heat/AC. Noise only last a few seconds. - Visitor
Clicking noise behind glovebox when the heat/ac first comes on. Happens periodically when running ac. Also happens when the car is not running, no key in ignition. - Visitor
I get a loud knocking noise when I turn the A/C and or heat on or off. It knocks/clicks for less than a min, but is very annoying. I have not brought it in to a shop yet to see what the problem is. - Visitor
terrible knocking and clatter from front of engine compartment. replaced all pulleys and tentioners, new power steering pump, new alternator, NOW they are telling me in the aC compressor. Is this a common preoblem with the 08 avenger? - tricia4148
Same as others. Knocking sound under glove compartment. Heard that it is the AC compressor and may cost hundreds to repair! - Visitor
i have a loud knocking noise behind my ac uint also - Visitor
Noises from the engine were heard, took the car to Dodge tecnician and was advised that A/C Compressor was damaged. Estimated cost of repair was $800.00! - Visitor
Well we havent fixed it yet,but when we turn on the heater or ac it starts knocking for about 15sec an it goes away. Sometimes it even knocks when the car aint even on. - melin_11
same issue.. but I replaced the cabin air filter and my problem went away.. it's on you tube. very easy to replace! try this first!! - Visitor
There is a loud knocking sound that seems to come from behind the glove box occasionally when I turn on the AC. Could it be the compressor? The sound comes and goes. - dstan56
Knocking noise from glove box when turning on or off air conditioner, now it doesn't work at all and overheats my car if ac button is pushed - Visitor
when ac/heat is turn on you hear this ticking sound it come on and off at times - Visitor
i have heard this for yeah but never knew what it was til now, but it never seem to be causing problems either so i didnt get it checked - sherrimo
This knocking noise comes on when I turn my heat and air on. I haven't had it fixed yet. - Visitor
knocking noise when a/c is turned on - Visitor
knocking noise when I turn air or heat on - Visitor
All, this sounds like a "blend door" failure. There is a motorized flap, that direct air to either recirculate, or vent from outside, same as from heat, to cold. When these motors fail, that make a loud clicking, or knocking noise. They are usually easy to replace, and relatively affordable. 60-120$ My .02$ 15 yr auto technician - Visitor
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