Why bypass the Intake Air Temperature Sensor

[maitee1]

My original question was answered in the engine sub-forum. My second question which would probably be answered quicker here: Is why would any one bypass the Intake Air Temperature Sensor?

I didn't notice it when I bought my Ranger a couple of months ago. However, when I was changing my drive belt, I saw on the air intake a sensor didn't have a connection. So I found a connector that was terminated. Removed the termination and installed it on the Intake Air Temperature Sensor and gave it a test ride afterwards.

Seems like I have more throttle response and I can get into the power band quicker. Haven't been able to test out the MPG's yet but I hope it will be better.

So why would anyone bypass the Intake Air Temp Sensor?

 

[97ranger4x4]

maybe they forgot to connect it back up? Do you know if anything was done to the motor besides basic maintenance. The only reason one would remove the intake tube is to access the drive belt or radiator hoses as far as basic maintenance goes right?

i am surprised you didnt have a CEL on. Maybe there isnt a code for the IAT

 

[Ozwynn]

I give up ........ why?

 

[snake]

You may have stumbled upon one of those 25c "power chips" they sell on ebay- it is just a resistor to fake out the computer. The computer thinks it is colder than it actually is, and advances the timing and such. This winter it woulda run like crap if you hadn't found and removed it...

 

[Ozwynn]

You may have stumbled upon one of those 25c "power chips" they sell on ebay- it is just a resistor to fake out the computer. The computer thinks it is colder than it actually is, and advances the timing and such. This winter it woulda run like crap if you hadn't found and removed it...

Yeah ..... those things are dangerous. cause mondo damage to the emission controls

 

[maitee1]

You may have stumbled upon one of those 25c "power chips" they sell on ebay- it is just a resistor to fake out the computer. The computer thinks it is colder than it actually is, and advances the timing and such. This winter it woulda run like crap if you hadn't found and removed it...

Thanks for the info Snake.

 

[shadetree]

The resistor really does nothing. If it is of such resistance as to not be seen by the circuit as a short, or defective sensor, the computer will see it as a change in the sensor parameters, and adjust accordingly, and everything will still work as it should. If the resistor is of such value as to appear as a defective sensor, the computer will see it as a defective sensor, and set a code turning on the CEL. shady