Fixed all codes and now this.......

[Walker]

I replaced all of my suspected failed componets this weekend; TPS, MAF, O2 sensors, EGR valve, EGR preasure sensor, and cleaned the nostrills. It runs great, but.... Now it won't idle. I pulled the idle control valve ad cleaned it. It apears to be OK. It will idle during cold start, but as soon as you blip the trottle it dies. It is fine as long as you idle it manually. Any ideas before I go spend $80.00 for a new idle control valve. And yes I did recheck all of my work and disconect the egr to see if it was shutting it down.
Thanks in advance,
Walker

 

[SHOZ123]

Check the connector to see if the wires are still good.

 

[F-22 Raptor SHO]

reset your idle following the idle reset procedure.

 

[SHOZ123]

Clear the PCM too by disconnecting the battery for a few minutes. I have never had a problem resetting the idle. Clear the PCM and drive. If all is good the idle will soon be where it should.

 

[Walker]

I guess the Air by-pass is dead. I't won't idle but for about 10 seconds after the reset. Oh well....
Thanks anyways, I didn't know you could do that.
Walker

 

[SHOZ123]

Disconnect the IAC connector while the car is running to see if there is any chnage. Be sure to see if there is voltage at the plug too. Handling the plugs will twist off the wires over time.

 

[Walker]

If I disconnect it while running it goes flat right away, which tells me it is working to some degree. If I create a vacume leak it idles fine. Are you talking about where the wires go into the backside of the connector?
Walk

 

[SHOZ123]

It does should like it is dead or clogged. You can take it off and look at it manually moving the rod to see if it is moving. Either the IAC internal rubber is ripped and not allowing proper opening or the coil is weak and cannot function as designed with the signal from the PCM.

 

[Walker]

Yea, I just finished the wire wiggle test and that didn't effect it. I cleaned it yeterday and it was already pretty clean. I just ordered one from Advanced. No one here in town had one on the shelf.
Thanks for the help,
Walk

 

[NoFlipping]

Make sure your TB gasket is in the proper orientation. I reversed mine once by accident and it chokes the IAB ports ending all chances of idle. If any "tabs" of the gasket are showing, it's in wrong. Just a thought. Good luck.

 

[Mr Anonymous]

What did you use to clean the IAC?

Most modern IAC's use a plastic valve that can't tolerate the chemicals in carb cleaners for more than a few seconds before the plastic starts absorbing the carb cleaner and deforming the plastic (looks like melting).

 

[Walker]

A backwards TB gasket.... I might have done that. It sounds like something I would do. As far as the cleaner I used a small amount of lectrimotive and a tooth brush.
Walk

 

[Walker]

I replaced the IAC and now she idles fine, but (yes another but) now I'm getting a 327 code. I drove two days with no idle and no CE light. WTF!!! I guess my new egr sensor died. It has the .5 v on the power wire and the .2 v on the gr/r wire.
Any Ideas????
walker