How can you tell if a iat is going bad

[Cantslowdown]

What are will a person start to notice when a iat sensor is going bad?

 

[DTNODYA]

The one on my Mustang has never gone bad but the one on my truck (Ranger) is bad. On my truck, it makes a moaning/blowing in a coke bottle sound, sometimes idles like crap, and the RPM's fluctuate sometimes when I first start it. I just don't want to drop a C-note on one ...

 

[propellerhead]

My Mustang sometimes does that howling sound like when you blow over the top of a Coke bottle. It does it only when the engine has fully warmed up and only at idle. It started right when I installed the 75mm Accufab throttle body and plenum.

What in a failing IAC would make it howl like that?

 

[DTNODYA]

I just noticed that you said "IAT" so my bad about giving you info regarding the IAC. When my IAT sensor went bad I threw a check engine code.

What in a failing IAC would make it howl like that?

I think it is some spring sticking open or shut ... dunno really.

 

[Cantslowdown]

Could the iat say when its frist started it runs really good but once being drove for awhile not run as good..Maybe riching the car up to much??

 

[propellerhead]

Crap. I did the same thing. I thought it was IAC not IAT. Sorry.

With a bad IAT I would think you'd run rough. Rich or lean. You computer will think it's getting cooler (or warmer) air when it isn't.

 

[Cantslowdown]

It seems to kinda miss up when i go to get on it like at wot...

 

[DTNODYA]

An IAT is only like 10 bucks (if that) ... Autozone is where I got mine. You can also try taking the sensor out and spraying the little diode thing (whatever it's called) with electrical spray cleaner. That or go buy a new one.

 

[jivepepper]

An IAT is only like 10 bucks (if that) ... Autozone is where I got mine. You can also try taking the sensor out and spraying the little diode thing (whatever it's called) with electrical spray cleaner. That or go buy a new one.

Not 10 for a Ford iat and I wouldn't use anything else. The iat mainly controls timing. When its cold it runs more when its hot less. You would probably throw a check engine light and would be down on power.

 

[DTNODYA]

Um ... I was wrong, it's 13 bucks ... this is what I bought a few years ago and have never had a problem. 'Ford' IAT ..... don't see how it could be better.