My heater/ac fan goes on and off when it feels like? Could I fix or should I take a to a shop

 

You mean the radiator fan? or the Cabin Blowing Fan?

 

obvious suspects: The power connector for fan motor located under front edge of glovebox is failing, wire loose-rusty crudded and potential FIRE hazard- not kidding!

The resistor for fan motor- acura calls it a transistor assembly but its a resistor to the outside world, often fails with power connector

Sometimes its the blower motor itself has used up all its revolutions and now sticks and starts? If the fan spins freely by hand- its ok

Your cabin air filters are down there in front of the blower motor assembly
Supposed to replace once a year, mine are definitely over-due~

 

A shop will over-charge you, do you like paying too much?
Example- dealer gets 150 Dollars!!!! just for the cabin air filter installation!

its 20 minutes the 1st time YOU do it and about 10-15 minutes after that.
Depends on ability to bend crouch lean twist and work on knees, while looking into cramped dark spaces

 

My fan connector was almost falling apart on mine! And it still worked on and off! I noticed it was trying to start a fire! Check this soon before you really have one!

 

Haha 01tl4tl, I changed a friends 01 TL cabin air filters a few months back and the plastic mold was not cut yet! The air filters had never been changed! Those filters did a great job. They didn't have one speck of white remaining on them.

 

Imagine what your friends lungs look like!

15 years and never been touched....and new filters are only 20 bucks range!
I like ones with anti-bacterial and carbon filtering, for those living where you can see the air~