Does relocating the IAT sensor actually do anything? I only ask this question becasue I now have IAT sensor code coming on. Any help will be appreciated. Thanks

 

different locations will require different IAT compensation. so you really don't want to move it unless you have the ability to adjust the compensation.

 

As long as the air is close to the same temp, you can move it. You wouldn't, for example, want to move it to the other end of the intake, because there will be a difference in intake air temp because of engine bay heat, etc. But if you just need to move it a short distance, there shouldn't be a problem if the temp difference will only be minor.. If you're getting a sensor fault, you've probably damaged the sensor. The ECU doesn't really care what sensor voltage it reads, as long as it's within the expected range. If it is outside of that range, you'll get a sensor fault. The exception to this is if there is more than one temp sensor (one in the intake, one built in to the MAP sensor sometimes), and they don't agree within the acceptable tolerance.
This is why I think the sensor is damaged or not plugged in correctly, etc. During a sensor fault situation, the ECU will generally default to it's fixed fault temp value and run off of that.
As far as compensation goes, the ECU doesn't really care that much about actual temp, because it doesn't know any better, but the ECU won't properly calculate fuel and spark densities if it's getting a different temp reading than the actual temp. The same thing applies if the sensor's default temp calibration value is different from the actual air temp; the ECU is adjusting things based on incorrect temp. Actual temp readings are usually off a little bit because ECUs are programmed with a certain sensor compensation curve; the voltage output of the sensor is not linear with temp so the ECU has to use a graph or function. Any difference in sensor tolerance between one sensor and the next means that the sensor voltage isn't accurate anymore, which is pretty rare. The difference is slight though, and this goes all the way back around to when I said a slight difference in temp due to a different placement isn't an issue.

So fix the sensor, or undo whatever you've done.

Why do you have to move it in the first place, I'm a little puzzled as to why you're doing this....?

 

im not actually moving it i just read somewhere about a relocation. the only problem im having is that its throwing a code.