Ok so today I put on some headers that I got used from a friend. They didnt have EGR provsions so we just took it all off, which i had planned on doing later anyway. Driving home I had made it about .2 of a mile and my SES light came on. I know why, now I want to know how to get it to turn off. Anybody know?

 

pull out the ses bulb? lol

 

You'll have to find someone who can re-program your chip so they can turn off the EGR diagnostics. That will rid you of your SES light.

 

I like the other way, it seems cheaper...

 

True, that will work, but if your SES light goes off for something else you wont know cause the light will already be on

 

umm.........

what EGR provisions are in the headers?
third gen sbc's had it all in the intake/heads

 

no it was actually in the exhaust manifolds. I dont know what they were, I had some friends helping and they know alot about 3rd gens so I just went with what they said.

 

hmm, might have been the fittings for A.I.R.

 

^Ya, he is thinking about AIR. I took that shat off of my Z28 as well

 

yeah i guess thats what it was. They were these small aluminum tubes that went into the manifolds right behind every exhaust port.

 

Yup. That is the A.I.R. system

 

You DO know that when theSES light comes on the ECM goes into limp home mode,right? Your fuel millage is going to take a big dump. You should reprogram,but black electrical tape works good in a pinch.

 

Thats not true, the computer dosent go into limp home mode unless the ecm fails. Just getting a SES light will not trigger this.

 

i dont really understand the difference in open loop closed loop or limp home modes...but from the way it felt today, its not in limp home mode

 

Your car is in Open loop when you first start it up (cold) once your car warms up it goes into closed loop and the computer starts reading off your O2 sensor to make fuel adjustments. In Open loop its just basicly a set of parameters for the fuel, untill the car warms up.