Hey Guys,

I hear a loud clicking sound every 30 seconds that is somehow related to the AC. I hear it every 30 seconds, it comes from the engine bay and I can hear it inside the cab when the radio isn't on. This only happens when the AC unit is on. Is the AC clutch bad or does it just need to be recharged?

Thanks!

Duke

 

This is normal, mine happens about every 40 seconds. Its just the AC compressor turning on and off. I don't hear mine either unless the radio is off.

 

Mine does it too, it's normal.

 

Geese....that must be the most POS AC compressor then. I've never driven or owned a vehicle that turned on and off that much. Not even in 110 texas weather and now i'm in 55 minnesota. It's like it's not charged enough or something. I had an 05 ford explorer over the weekend and it never did that. hmmm

 

it may be low on refrigerant how old is the truck
seals on the compressor shaft dry out and crack after a while

 

1,000 miles...it's a baby 2005

 

Way back in the "good old days" the compressors didn't cycle off, they ran all the time and burned more gas. The newer ones cycle on and off depending on how much cooling is needed. That is why it cycles on and off more in Minnesota than in Texas. They cycle less with automatic temperature control than they do with manual AC.

 

How so? I have a Screw Lariat with the automatic A/C and that dumb thing is clicking every 30 seconds. You tell me that the manual clicks that loud every 15 seconds? We have four other 2005 vehicles, Infiniti, Chrysler, and Saturn....even the Saturn doesn't do this. So I'm dumbfounded why a $41,000 truck has louder AC clicking than a $24,000 Saturn.

 

I feel your pain, I took mine to the dealership for the exact same reason and they told me nothing was wrong. I hate that dang AC Compressor.

 

also remember it also depends on the temperture. and pressure of the refrigerant . when the pressure gets to low or high it will turn off and on the a/c compressor .
the txv valve in the evap regulates the refrigernat flow to the evap.
as long as your not frosting you liquid line back to the compressor you should be fine

 

Yeah well I'll just take my light saber to it...lol. Playing off the high tech lingo that I had to read 5 times to understand. What blows my mind is that it's 55 degrees outside and I have the automatic AC set to 68. It should not be clicking that much struggeling to keep my truck 68 with AC. I'd be scared to take this thing south back to texas where it gets 110. What's it going to do then? It'll be freaking morse code, click click click click click, every 2 seconds.

 

If Its 55 Deg. Out Side Thats Why It Cycles On And Off You Refrigerant Temp Is Low . The Colder Out It Is The Lower You Refrigernat Pressure Is And It Is Cycleing So You Wont Damage Your Compressor .
A/c Compressor In Your Car Or In Your House Are Not Relly Made To Run When It Is That Cold Unless You Have Low Ambient Controls On It Which Intern Cycle The Condensor Fan To Keep Your Pressure Under Control And Most Cars And Truck Only Use One Fan.
Cars That Have A Electric Fan You Will Notice That It Turns On And Off To Keep The Pressures Under Control
This May Be A Bit To Understand But I Have Been In The Hvac Field For 13 Years

 

Mine plays morse code in 90 degree weather, I think its saying "too damn hot, too damn hot" so, I dont think its makes a difference how hot or cold it is outside, its still gonna sing...

 

I guess I'm just frustrated because my 99 Infiniti QX4 never clicked this much under the same circumstances and when it did, it was so quiet I couldn't hear it inside the vehicle. In the Ford I hear it plain as day inside the cab. So much for that quiet steel I guess.

 

Like I Said It Only Has 1 Fan To Ctrl The Pressures. So The High Or Low Pressure Ctrl Are Opening And Closing To Balance The System Correctly.
If You Think Youhave A Bigger Problem Turn Your A/c On When Itd Hot And Open The Hood Check The Ac Line Going Into The Cab And See If It Frosts Over . That Is A Indication Of Being Under Charged .
It Should Be Wet On A Hot Or Humid Day Not Frozen Or Frosted Over