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How can you tell if a iat is going bad

  • Thread starter Thread starter Cantslowdown
  • Start date Start date Jul 29, 2006

Cantslowdown

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Jul 29, 2006
#1
  • Jul 29, 2006
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What are will a person start to notice when a iat sensor is going bad?
 
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DTNODYA

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Dec 15, 2005
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Jul 29, 2006
#2
  • Jul 29, 2006
  • #2
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 ...
 
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propellerhead

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"but what's with the but shots?"
Jul 29, 2006
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  • Jul 29, 2006
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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

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Jul 30, 2006
#4
  • Jul 30, 2006
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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.

propellerhead said:
What in a failing IAC would make it howl like that?
Click to expand...

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

Cantslowdown

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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

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"but what's with the but shots?"
Jul 30, 2006
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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

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

DTNODYA

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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

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Jul 30, 2006
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  • Jul 30, 2006
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DTNODYA said:
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.
Click to expand...


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

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Dec 15, 2005
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Jul 30, 2006
#10
  • Jul 30, 2006
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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.
 
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