Ryans99ls1

iTrader: (16)

My car is throwing an IAT high voltage code. What exactly does this mean? Is it pulling timing now thinking the IATs are too high? Ive been trying to trace the wires and it doesnt seem like there is a spot for it to be shorting out and i bought a new sensor. What else could fix it?

jimmyblue

iTrader: (11)

It means an open circuit somewhere in the PCM-IAT-ground
chain. Check connectors first, pushed-out pins etc. if the
new sensor doesn't help.

Whacked IAT can modify spark and fueling.

jrocstar

iTrader: (31)

it can change barely and timing at most maybe 4 degrees but fuel and really get screwey simple solution unplug it. atleast until you can gind the short or ground

Ryans99ls1

iTrader: (16)

Where is it grounded at? Im just not all that great when it comes to electrical stuff like this. If i unplug it, wont the car run like ****?

2001NBMZ28

Looks like the ground is in the PCM, this shows the wiring diagram: www.gearchatter.com/viewtopic8911.php