hillom14

A few months ago, my 99' RX300 stopped switching the flow of air from anywhere but the vents. Even when I push the button to switch to front defrost, floor, floor/vent, defrost/floor, etc, the air continues to only blow from the vents. The adjustable fan speed works fine, as well as the heat and A/C, but it does not respond to changing the direction on the dash. Even when put on floors only, the vents continue blowing. Also, and i'm not sure if this is directly related, but just recently another problem has arisen. Upon turning the key to on (with the engine still off), an electric motor behind the glove box begins to hum louder and louder for approx. 5-10 secs, then stops abruptly. I've read a few forums about problems with air servos that would probably explain the humming i've been hearing, but I was curious as to if a failed servo would account for the inability of my car to recognize a change in airflow direction? Anyone have an ideas?

I have a 1999 RX300 with approx. 125k miles. I've have a number of different issues with ignition coils blowing. Over the course of the last three years, I have now replaced four coils on three different cylinders. One of those replacement coils could have been defective, as it blew nearly a year after being installed. Each time a coil failed, all six platinum plugs have been replaced, yet a few days ago,my mechanic pulled one of the plugs and we noticed some corrosion on it (which appeared crusty, almost like battery acid build up). I'm wondering if there's a different underlying issue that could be causing the coils to fail? or if the plugs are part of the issue that's causing the coils to fail? Anyone else having similar issues? Any insight would be greatly appreciated.

I have a 1999 RX300 with approx. 125k miles. I've have a number of different issues with ignition coils blowing. Over the course of the last three years, I have now replaced four coils on three different cylinders. One of those replacement coils could have been defective, as it blew nearly a year after being installed. Each time a coil failed, all six platinum plugs have been replaced, yet a few days ago,my mechanic pulled one of the plugs and we noticed some corrosion on it (which appeared crusty, almost like battery acid build up). I'm wondering if there's a different underlying issue that could be causing the coils to fail? or if the plugs are part of the issue that's causing the coils to fail? Any insight would be greatly appreciated.