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Where is the IAT sensor on a 1999 mercury grand Marquis located? Any help would be great

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Hello I need help. I need to know because my check engine light on and its stated 2 code P0136 and P304. just wondering I have a 1999 grand marquis GS and needing to help me find the location and the code are P0136 bank 1 sensor 2 need location for this? and P0304 what is this one also. please email me ASAP I really appreciate it . thanks.

Posted on Mar 04, 2014

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SOURCE: where is the iat sensor located on a 1999 chevy cavalier 4cyl

The Intake Air Temperature (IAT) sensor determines the air temperature inside the intake manifold. Resistance changes in response to the ambient air temperature. The sensor has a negative temperature coefficient. As the temperature of the sensor rises the resistance across the sensor decreases. This provides a signal to the PCM indicating the temperature of the incoming air charge. This sensor helps the PCM to determine spark timing and air/fuel ratio. Information from this sensor is added to the pressure sensor information to calculate the air mass being sent to the cylinders. The IAT is a two wire sensor, a 5-volt reference signal is sent to the sensor and the signal return is based upon the change in the measured resistance due to temperature.

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Fig. 1: The IAT sensor is located in the air cleaner outlet tube-2.2L engine and 2.4L engine

Hope helped.

Posted on Apr 11, 2010

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