IAT sensor

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Jan 2, 2007 | 12:13 PM

bertha66

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From: Central Oregon

IAT sensor

I was looking in the old post, using the search fuction for a problem with ny 90 4.0 Areo. What is and where is the IAT sensor on my 90. The problem is that hte CEL comes on when the engine is cold and goes off after about 1/2 mile of driving. Codes were ran, they said engine is running lean and that the EGR valve was not working and that the engine tempature was low. It does not have a EGR valve. It has a new O2 sensor and I need to change the ECT sensor, but I don't know what the IAT sensor is. Thanks for any help.

Jan 2, 2007 | 02:40 PM

xlt4wd90

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From: SoCal

IAT is the Intake Air temperature sensor, but I've never messed with it before so I don't know where it is.

Odd that the EEC test will point out an EGR problem when the engine has no EGR system.

Jan 2, 2007 | 02:54 PM

96_4wdr

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From: Washington state

Intake Air Temperature (IAT) Sensor, 4.0L

Top LH side of engine, behind idle air control (IAC) valve (F8)

Jan 2, 2007 | 03:00 PM

bertha66

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From: Central Oregon

Thanks, I did think that it was odd about the PVC, but the parts house that ran the codes for my Wife said that the computers is not to good on some thing this OLD. It is my Wifes truck.