Question about 1992 Mercury Capri

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Need to know where exactly the iat sensor is for a 1992 mercury capri

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On the air inlet tube

Posted on Sep 30, 2009

  • Johnny    Brown
    Johnny Brown Sep 30, 2009

    im sorry thinking of another year your iat is 100% part of mass air flow sensor



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Aug 06, 2010 | 1991 Mercury Capri

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Where is my IAT sensor? I bought a X2 Module and they do work because my friend has one and dyno showed an increase from 228hp to 256hp 
If its the air temp sensor removing it or unplugging it MAY do a few things depending on the type of sensor it is. Most send a signal to the computer in terms of resistance (ohms) that changes with temp. That signal is used by the PCM in conjunction with others (MAF O2s MAP) to determine timing and fuel requirements. If you unplug the IAT sensor the computer (on most GM cars) will see an open or infinite resistance and give the lowest possible temp input to the computer for air temp. That can increase timing across the RPM range sometimes giving a few extra ponies. It can also lead to detonation if too much timing is present.

I hooked up a 10k ohm potentiometer to my IAT sensor so I can dial in the temp I want. If I want some timing ****** for nitrous I dial it so the computer sees 185 degress F and it takes 2 or 3 degrees total timing out. For more timing I dail in 20 degrees F and it will advance it some. Works good.

This may be totally different on Capri but most IAT sensors work the same. As for changing the reading on the IAT will not give a 28 HP difference since the ECM will only give a given default and P.S the Potentiomete is about $6.00 for a good one at Radio Shack. 

Sep 30, 2009 | 1992 Mercury Capri

3 Answers

Where is my IAT sensor located? Its a 1992 Mercury Capri non Turbo. I bought a Performance module and its splices into the two IAT wires. Is

Save your money and don't attach the module, it does not work. It only works during idle and after that the O2 and MAP sensors take over to control the air fuel ratio and timing. Take note that if there is a conflict with the program to your ecm's parameters, your engine will run under limp mode default which would result in less HP and performance. Good luck and if you need ore performance just spend the extra to have your car Dyno Turned. 

Sep 30, 2009 | 1992 Mercury Capri

1 Answer

1992 Mercury Capri IAT

it is located in and is a part of the airflow meter.

Sep 29, 2009 | 1992 Mercury Capri

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