Two problems related to gas recirculation valve (egr valve) have been reported for the 2002 Mercury Cougar. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2002 Mercury Cougar based on all problems reported for the 2002 Cougar.
The car gets a stalling sensation when at a red light, or a complete standstill. It feels like its stuttering and unable to keep power. Changed egr valve, 2 idle control changes, along with a transmission flush was done. Nothing seems to be fixing the issue. The car acts up and stalls in cold temperatures. Stalled at a red light twice. Has been taken to different car shops on numerous occasions. No engine light comes on.
Since purchasing 2002 Mercury Cougar in January 2010 the vehicle hesitates, surges, and stalls at any rate of speed. Initially the problem was rare, then gradually occurred more frequently. This now happens at least weekly, sometimes several times per day. This issue has endangered me more times than I can currently recall. Replaced alternator, battery, egr valve and sensor, iac valve, and catalytic converter. The issue persists.