Finally, got a check engine light today. It happened pretty much the same way it always
has. Driving 55-60 going down hill and as soon as I took my foot off the gas I got the
service engine light. As I mentioned earlier it always happens at about the same speed
in deceleration. I have not had the light come on at lower in town speeds or under heavy load during acceleration.
The code reader showed a P0327 and a P0332 which from what I can find is both sensors.
I have a few question so I can better understand what is going on.
1. From what I read, upon starting the engine the sensor sends a signal to the computer
which is an indicating the engine is running. If the sensor is bad and sends no signal, will you get a check engine light immediately as an indication the sensor
is not working?
2. If the cable is bad killing the signal from the sensors do you get a check engine light
3. When the computer gets a detonation indication from the sensor it retards the spark which should hurt performance. Does the computer reset the spark to the normal
setting if it sees no further detonation signal from the sensor or does it stay retarded until the code is removed? I have never noticed any loss of performance when these codes are generated.
Wednesday, April 27th, 2016 AT 4:32 PM