I just got home from a 700 mile road trip and on the way back i noticed that my cel wasn't lit up anymore. I thought maybe the bulb burnt out, but it still turns on with the car off. Could it unclog itself?

 

EGR is disabled at highway speeds
Something like that...

 

Well, it hasn't come back yet, and I've driven over 50 miles. I'm not complaining...

 

It will be back if you haven't cleaned it out/fixed it. Believe me.

 

Could have been a carbon deposit that sorted itself out? Just throwing it out there.

~THT

 

so egr is a bad deposit in the exaust system?

 

maxes have a way of fixing themselves

 

EGR is the exhaust gas recirculation system. It takes a bit of exhaust gas and injects it into the intake to burn it again, cleaning the exhaust a little bit more. The system itself clogs with carbon deposits sometimes.

~THT

 

my car stalls sometimes, could it possibly be because of this?

 

ECU's have a run cycle where they will clear themselves if the problem goes away... thats probably what happened.