Lately my Cougar has been throwing a P0401 code (insufficient EGR flow) along with symptoms like engine shaking at cruising speeds, reduced fuel economy and a quite high 1000rpm idle when warm.
Many posts on the forum have led me to suspect a bad DPFE sensor, so I plugged my...
So I continue my search of a reason of total power loss with lean conditions (with CEL shining for 2 years). The beginnig of the story was there:
Today I have tested my EGR valve solenoid...