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After your engine gets hot i get a humming noise from the motor area what could be causing this you have a 97 ford ranger V6 4.0 4 wheel drive auto?
I can't remember off the top of my head. But if you look near your TPS (Throttle Positiong Sensor) there is another sensor on the side of the engine that is silver with a black cylindrical cap. It;s held on by 2 bolts and the footprint looks like a diamond. If you replace that part the humming will stop. It has to do with the sensor allowing too much or too little oxygen into the engine.
The humming probably sounds like it's coming out of your intake, but that sensore will fix it. If I recall what it's calls, I'll post up.
It;s the IAC (Idle Air Control)
I've posted a pic from my Photobucket account
http://s82.photobucket.com/albums/j252/Tonkatoy163/?action=view¤t=Ranger-IAC.gif
What else can I help you with?
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