|
Re: P1404 need a new EGR valve?
Welcome to AF.
P1404 EGR Closed Position Performance (GM)
It sounds as though the EGR is stuck shut, or the solenoid is shot and it's not opening when commanded. Normally, the PCM will not command the EGR to open until the car is fully warmed up and at light load (ie at steady/cruising speed), so the car acting differently at cruising speeds is indicative of a stuck/bad EGR. The statement that the EGR doesn't open until 40 mph or higher is false.
__________________
Still waiting for the "good old days" I'll get to bore my future grandchildren with!
|