Oh yeah it sounds and feels like something is moving in there. Do you know what tells the PCM to open the EGR valve? I would assume the o2 sensors?

Coolant temp.

I'm not for certain about this but dosent your car have to be moving (speed sensor) also for the egr to operate?

Some cars use speed, but I do believe this one uses temp. I would have to look at the tune to be sure.

Coolant temp really? I never would've guessed that. I recently changed my water pump and now the car runs alot cooler(not to mention it'* been cold as hell in Orlando recently) I wonder if that'* why the EGR isn't opening? Or do you guys think the coolant temp sensor is bad?

Hey Dan do you have a write up on how to test the MAP sensor?

I do not have a write up on the MAP. What is your temp gauge saying? If that'* wrong it will cause all kinds of problems because the PCM uses engine temp for a lot of tables, such as engine idle speed.

Before I changed the water pump my temp gauge was reading 200 to 220 at stop lights. After I changed the pump it reads around 180. But I see what you're saying about the gauge, I think I'll change the coolant temp sensor and see if that helps the damn thing is only 15 bucks. But does the temp gauge in the dash run off the temp sensor that the PCM uses?

There is only one temp sensor, so yes.

Is it in the the block or the radiator?