THIS SEEMS TO BE GOING AROUND!

[mike100]

Originally Posted by oricale

Allright...shouldnt the IAC disconnected make the engine react???...when I unplug mine, nothing changes....(and its new)

if you unplug it while it is 100% closed- it will just stay closed, won't it?

a scan tool will tell you its position with iac count values. zero is maxxed out- blocking the port completely.

[oricale]

Allright so I checked the cruise...no change

I plugged the airhorn and the engine stalled so I dont think I have a vacuum leak.

still surging!

[phrogs]

I have that same pedal feel in my car at times usually low mph and just trying to push a little more and it feels like its stuck and then bam your hitting the gas hard. I have a ported throttle body as well.

[secondchance]

Originally Posted by USAFPILOT

I have a plug wire that keeps backing off the plug causing a miss every now and then.

Just in case, check and make sure the spark plug is still torqued correct. I had a pulg boot that kept popping off and turned out to be a cylinder leak caused by a loose plug.

[oricale]

ALTHOUGH !! I did get a 22 code this time..its the TPS sensor voltage under .24 volts at one point BUT....I have checked it and it is at .55!

[mike100]

Originally Posted by oricale

ALTHOUGH !! I did get a 22 code this time..its the TPS sensor voltage under .24 volts at one point BUT....I have checked it and it is at .55!

if you have a bad tps pot or a loose connection, I'm sure that is playing havoc with the control loop in the ECM idle strategy.

[XfireZ51]

Originally Posted by oricale

Allright...shouldnt the IAC disconnected make the engine react???...when I unplug mine, nothing changes....(and its new)

If you unplugged the IAC and it was already at 0 steps, it won't make any difference. So the IAC is not controlling idle suggesting that there is enough air(too much actually) coming through the TB. If you don't have a leak, could be the Min Air or the throttle blades.
BTW, unplugging the IAC will require you to do the IAC reset procedure.

[oricale]

How does one do that?