IAT and ACT sending

[95BLKGT5.0]

Are The IAT and ACT the same. My Chiltons book only shows a IAT and no ACT.
I ordered a ACT , ECT and a new fuel pump to get rid of my pinging . I have already changed o2s and cleaned the MAF new plugs, wires and my timing is at 10 deg and it pings real bad at 3000 rpm.

 

[94CobraPace]

No they are not the same, they are different sensors. The IAT is the air intake temp & the ACT is the coolant temp.

 

[S/CBlack95GT]

Actually they are the same thing. That sensor in the air box is known as the Air Charge Temp sensor (ACT), or the Intake Air Temp sensor (IAT). The coolant temp sensor is called the ECT.

 

[AznStanger3v]

damn, you beat me to it

 

[mo_dingo]

Yep, 94CobraPace is wrong. ACT = air charge temperature, IAT = Intake Air Temperature. ECT = Engine coolant temperature sensor, which measures the temp of the engine coolant. ACT/IAT measures the temperature of the incoming air charge (screws into rubber air intake).
Scott

 

[95BLKGT5.0]

Thanks guys I did change them both now I am just waiting for my new fuel pump to get here then I will fire it up. Thanks again.