| the initial reading of the temp sensor when you first start the car. In other words, if the ECU receives a signal from the temp sensor at startup, the ECU will use that value to calculate the time it needs to switch from open to closed loop operation. When there is no signal from the temp sensor the ECU will slowly increase the temperature value at a range from approximately 69.8 degrees to the max of 176 degress in 6 minutes. If you have no signal from the temp sensor it will still look like you are receiving a temperature reading from the temp sensor when you monitor the sensors using diagnostic sensor monitoring software at the consult port. To tell if you are getting a reading from the temp sensor at all, start the car and let it run a bit to warm up the engine. Turn the car completely off for a few seconds. Start the car and imediately start monitoring the sensors. If the coolant temp is back down to around 70 degrees (it will slowly start increasing again so by the time you start monitoring it it will probably be a little higher) each time you do this then it means there is no signal from the temp sensor. The car will stay in open loop operation and will run rich untill it gets a signal from the temp sensor. Because of the voltages you are seeing at the O2 sensors, it sounds like there is a problem there. You should be seeing something around .8 volts or better once the engine has warmed up. If the O2 sensors never give a higher voltage than what your seeing it will continue to run rich because the ECU thinks it is running lean with those O2 voltages in the .32 to .34 range and tell the injector latency to take longer which of course will cause the car to run rich with more fuel.
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