Saturn Repair Problems? Ask a Mechanic for Answers ASAP
Hello and welcome to just answer. I value your input to my questions so I may help you better. Is there any engine light on or trouble codes? Is your EGR vacuum or linear type?
Just a moment I have the wiring for this
Here is the wiring for the EGR
What I see is that the map sensor comes into play as this type of EGR operates on pressure readings rather then vacuum, and the only one input for that is the map sensor. I would check that and it's connector first before looking at the ECU
Yes if the proper message is sent at the right time to the ECU then it can be the ECU is reading wrong.but check that first.
good luck and let me know