Re: 2006 Chrysler Crossfire at Dealer for extended warranty repairs - plus dealer gre
The Right side is the passenger side (US)
"The Oxygen Sensors (O2S) are attached to, and protrude into the vehicle exhaust system. The vehicle uses a total of 4 sensors; 2 upstream (referred to as 1/1 and 2/1) and 2 downstream (referred to as 1/2 and 2/2). The right upstream sensor (1/1) is located in the right exhaust pipe just before the mini-catalytic converter. The left upstream sensor (2/1) is located in the left exhaust pipe just before the mini-catalytic converter. The right downstream sensor (1/2) is located in the right exhaust downpipe just after the mini-catalytic converter, and before the main catalytic converter. The left downstream sensor (2/2) is located in the left exhaust downpipe just after the mini-catalytic converter, and before the main catalytic converter."
2005 FSM pg 14-54
"The downstream heated O2 Sensor signal is used to detect catalytic convertor deterioration. As the convertor deteriorates, the signal from the downstream sensor begins to match the upstream sensor signal except for a slight time delay. By comparing the downstream heated oxygen sensor signal to the signal from the upstream sensor, the PCM
calculates catalytic convertor efficiency. This calculation is also used to establish the upstream O2 goal voltage (switching point)."
('05 FSM pg 14-55)
pictures on 14-56
This means that in closed loop cruise a good system should have the upsteam sensors constantly transitioning between about .2 ad .8 volts while the downstream sensors should sit on about .4-.6 and do not vary much. (I will test this theory the next time I take the CF out).
A cold sensor will read about .5v and not change much until it gets hot enough to "light off". This should be in a few seconds for a hot engine or a minute or more for a cold engine. Until then it is running "open loop".
BTW this means if a cold engine smells bad (too rich) on startup, the problem is not the O2 sensors or catalysts because they are not yet active.
ps Other than being 4 wire designs, I do not see anything special about these sensors that would warrant a price over $100, specs sound like any other O2 sensor since the original one wires, heater is just to get it to light off faster. Might have a special connector though.
Might look here - call if have questions.
Are these the right ones ?
Chrysler Crossfire Bosch 16167 Oxygen Sensor, OE Type Fitment by Bosch (upstream)
Chrysler Crossfire Bosch 16276 (downstream)
Last edited by Padgett; Jan 14, 2014 at 09:55 AM.