Join Date: Apr 2011
Feedback Score: 0 reviews
Buzzing from transmission
Hello, I just joined so i can ask this question. My wife drives a 2002 OBW, 2.5L, auto trans., with 180,000 mi. She bought it new and has been a great, relatively trouble free car. After much reading on this forum I decided to test the TPS due to a hesitation issue. I ended up disconnecting the plug from the TPS with the ignition switch on (not running) and heard a loud buzzing, like a solenoid not fully engaging, from the transmission. I quickly plugged it back in however, when I open the throttle past idle the buzzing starts. The car runs and does not make the sound while it is running.
I do all my own work and usually don't make dumb mistakes like disconnecting sensors with the ignition on.
Some history on the car. In the past year i have replaced the head gaskets, timing belt (every 60,000), wires and plugs and o2 sensors.
The TPS is shot, voltage drops at two points.
What could cause the buzzing?