Thought this was odd.

**wicked1** · 06-30-2009, 05:42 AM

Ive noticed over the past several months that a blower fan kicks on and off in my 99 TA even when the car hasnt moved for days. At first I thought it was the cooling fan but I sat and waited for it one day while washing her and I discovered its the heater/air conditioning fan thats up in the dash. It comes on for 2-3 seconds and goes off. As I said this is even when the car hasnt been moved. I first noticed it last winter when it was parked in the garage. Has anyone else experienced this? Anyone know what could be wrong?

**silverWS6** · 06-30-2009, 08:29 AM

Keeps it from stinking up inside? That is weird, idk if mine does it hmmmm
Does it kill your battery?

**shady milkman** · 06-30-2009, 12:03 PM

something funky with your hvac system i would guess

**wicked1** · 06-30-2009, 12:40 PM

My battery did die this spring but it was old so I dont know if that killed it or not. Since I put the new battery in its been fine. Couple months now.

**JaycenK** · 06-30-2009, 01:11 PM

Sounds like something wrong if it dosen't stay on for longer than that. Some people wire up a thermo to a relay to vent the car of heat. could be a bad ground but I don't have a wire diagram to look at how the circuits are designed.

**wicked1** · 07-28-2009, 03:10 PM

I think my car has an electronic evaporator on it. I found out you install these to help keep the ac dry so it doesnt grow mold and stink. Itll cause the blower to come on.

**Cutlass** · 07-28-2009, 04:51 PM

Yeah its called an afterblow module. I've installed a few of these. It runs the blower like you described to dry out the heater/evap case to prevent the musty odors caused by mold/mildew.