Check Engine Light Due to Plugged EGR Passage on Mercury Cougar

The Check Engine Light can illuminate with codes due to the lack of EGR (exhaust gas recirculation) flow caused. This is commonly a result of a clogged passage in the intake manifold. To correct this problem, the EGR valve has to be removed and the passage cleaned thoroughly. Partial restriction of this passage can cause smog test failures for the NOx emissions without causing a drivability symptom.

RepairPal Verified
Average mileage: 118,000 (101,000–135,000)
Exhaust & Emissions affected: 2.5L V6
2 model years affected: 1999, 2000
5 people reported this problem
2 people shared problem details
I just purchased this last Sunday.The engine light is on. I took it to Autozone and they said it was a egr code..There is also a bad smell of gas and excessive fuel consuption when over half a tank of gas.
2 people like thisFlag inappropiate
Had system cleaned, but keeps coming on every other month. I've tried using engine cleaner additive when filling up with supreme gas clears it for a month then comes back again
Related Items:
Just bought used 2000 Mercury Cougar. Had engine light lit, dealer told me it was due to vapor...
The Check Engine Light can illuminate with codes due to the lack of EGR (exhaust gas recirculat...
If my check engine light is on and keeps reading "O2 sensor circiut malfuction" even after chan...
I have been told this could be a "tube" stoped up in the motor. Has anyone had this problem bef...
Check Engline light is on, i took it to an auto zone so they could pull it up on the code readi...

Related Content