Hmmm... It does make sense that there would be SOME draw on the motor to run the accessories but should it affect it by like 300 - 400 RPM? I dont know and Im not a mechanic but that seems like too much of a draw to me.

For example (and I dont know if yours does this but) when my RAD Fan kicks on in the car, it causes a small "surge" (if you will) where it will kick my RPM UP by about 200 RPM to account for the initial draw on the motor but then will adjust itself back to normal after that initial draw. That being said and by that theory, shouldn't the car be doing the same for the use of Rear Defrost, Windows, etc? Instead of DROPPING RPM and not making any kind of correction, shouldn't it be RAISING the RPM and then self adjusting after the initial power draw / drain?

Again, Im not a mechanic and I may be over thinking it but it just seems strange.

Thoughts?

 

Mime does same thing when the rad kicks in... I'm, not sure dude its like we have the same problems my car never stalled on me though.. The ratrles is starring to biother me tho its coming from passenger side by the fender im pretty sure