Service Engine Light...

[SHOZ123]

Your cable is probably frayed just inside the IRMC box. This prevents it from completely retracting and making the switch inside. With the switch not made and the IRMC commanded off then it sets the code.

No gaskets are really needed as all the metal gaskets can be reused with a coating of fresh paint just prior to installation. Brake cleaner or Berrymans or paste type paint remover all work well in cleaning the carbon off the parts.

 

[Mr Anonymous]

Trying to keep the aliens from communicating with your car???

 

[NebraskaSHO]

Haha... it's hi-temp aluminum tape. I snapped that shot before the rest of the wiring looms were double wrapped.

 

[inverse1216]

thanks pcross 53. that pictures gives me a good idea where to start. i was at autozone and theres 3 parts to the idle speed control, the relay, actuator and motor i didnt know which i needed so i held off. im goign to check the irmc now if the wire is frayed i have no choice but to get a new one? also any one have any info on where i can get a shop manual for the gen 3's?

 

[Mr. SHO]

Throw out the IMRC--it does nothing for performance or fuel economy and you don't need it.

 

[SHOZ123]

I second that. I have the butterflies out and the shafts too. The shafts alone are 3 sq"of surface area; directly in the intake path.

But to turn a draw into a gain from this you need to modify the fuel trims for WOT below 3k rpm.

 

[rickshaw]

I love where this thread is going, as I'm another 1518 victim.

My car runs fine, not sure why after I paid a dealer to clean the butterflies and de-carbon the intake. I think my secondaries are stuck open.

I'm planning on a weld in the next few weeks. Would this be a good time to disconnect the IMRC and remove the butterflies?

thanks,
rickshaw

 

[SHOZ123]

Seldom are they really stuck open. It is just the cable not retracting the last 1/8" that sets the code.

There is a pretty heavy spring on the secondaries that will keep them shut when not commanded on. You can also look at the linkage and see if they are open any when the car is off.

 

[NebraskaSHO]

Well if there's no real advantage to having the IMRC working how hard was it to fill the shaft holes in the lower intake. Also how about the fuel programming you talked about Paul under 3k at WOT. XCAL 2?

Just wondered. Ive been meaning of painting the entire intake and valve covers and this would give me good reason to tear it all apart again.

 

[SHOZ123]

I filled the shaft holes with some red hi temp silicone.

The programming will have to come from a chip or the Xcal2. But it is only the WOT fuel values. You really aren't below 3k that long at WOT though.

 

[2 4shofast]

Paul with all of your mods that you have done already and the ones the keep "popping up" I dont think I will ever get finished with this car!!! When I think I am getting close to running out of mods another 5 pop up that I havent even heard of or thought about!!! Thanks for keeping me busy over here.

 

[SHOZ123]

Well if the aftermarket won't do anything for us, it's up to us to come up with the mods.

I'll quit when I get rid of the car.

 

[2 4shofast]

You just keep the Ideas coming and I will continue to mod...do you know of anyone who has ever ran a stand alone on a Gen III because that is shortly around the corner for me once I can track down a set of BBB's They are like a *** of gold at the end of the rainbow...people have heard about them just cant find em...lol

 

[SHOZ123]

Still say the best performance mod one can do on the V8 is some tuning software, flasher and a wide band O2 sensor.

Under a grand and it makes all kinds of things possible.