Replaced Oxygen sensor recentlyOxygen sensor......that is supposed to be replaced every 30k miles on that engine. MAP sensor also has a lot to do with mileage. BTW: any E codes?
AC Delco Plugs
Accel wires: the large ones 8 or 9 mm
Drive at 60 mph on highway with a light foot
Stock 205 tires slightly overinflated
Only code is related to EGR: PO48 Current/ EGR Fault
I replaced the EGR, cleaned the passages. I get the check engine light after running the car for about 20 minutes.
This was discussed here: http://www.cadillacforums.com/forums/ht4100-4-1-4-5-4/150175-po48-current-egr-fault.html
Not sure what to try next.