clicking noise from under dash when blower fan turned on

[BajaXplorer]

Lately my wife has noticed a clicking nosie when the fan is turned on (not A/C).
I checked and it appears to be something on the passenger side either from under hood or under dash.

Almost like a relay clicking on/off. the RPMs rise and fall a bit too almost like the A/C compresser is cycling on/off, but the A/C isnt on just the fan. More noticable when using the rear fan(for the rear seat passengers?


Any ideas.??

Thanks,
Doug

 

[Lifted95X]

The A/C compressor does cycle on and off when the heat or A/C is on.

 

[BajaXplorer]

It does this when just the FAN is on as well???

Im stumped. I could see if it was when A/C was on it would indicate low charge but when just the fan is on?

any other ideas?

 

[Lifted95X]

Even when the fan is on. It is annoying, but normal.

 

[BajaXplorer]

Thanks at least Im not going crazy!

 

[crossman]

My Explorer does the same thing, but it only does it when I have the heat on the defrost or floor/defrost selection. I was told that it is the A/C kicking on and off, so the windshield doesn't get too hot with the defroster on.

 

[88vert]

I just unplugged mine

 

[corniseharris]

Hi everyone I hear clicking whether I put the heat on or not. It just clicks and clicks all the time, what is that and why is it doing that?

 

[swetrid]

Hi everyone I hear clicking whether I put the heat on or not. It just clicks and clicks all the time, what is that and why is it doing that?

Sounds like you have a bad blend door actuator. Pretty common problem and there should be some threads about it.