My a/c is starting to blow at differant speeds. Fo example I have to the setting on 4 high speed. It will blow hard out of the vent then all of a sudden start blowing as if somoen switched it to low speed, then blow hard again, the low ect. It will do this all gthe time no matter if I am sitting at idle or driving at a steady speed. Any ideas?

 

this is probably due to the fact that the temperature in the cabin has reached the control panel setting. It is a built in feature.

 

Dennis - I assume what you mentioned is a feature of the AUTO climate control...what if OP has manual climate control?

 

My 97 has the manual controls and it does it. I was used to the auto climate controls on my other max's doing that and didn't expect the manual to do that. But it does.

 

hmm. Learn something new every day :-) Guess i know what to expect in my 99 then here in a few months

 

Guess I should have mentioned that 98 Maxima GXE manual a/c

 

My manual a/c does something like this too. If I have it set on the second lowest speed, for example, occasionally when I take off from a stop the fan speed will increase...as if I had just pressed the recirculate button.

 

my 99 does not do that,.. it only works on 4. blower motor resistor