2002 Mercury Cougar Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 2002 Mercury Cougar
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2002 Mercury Cougar ProblemsCheck Engine Light on Due to Clogged EGR Passage in Intake Manifold
The Check Engine Light can illuminate with codes due to the lack of EGR (exhaust gas recirculation) flow caused by the intake manifold passage plugging up with carbon and oil. 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.
The battery light may illuminate on the instrument panel because the alternator wire harness connector is damaged. A new connector kit is available and should be installed to correct this concern.
2002 Mercury Cougar QuestionsWhy do I have transmission oil in the antifreeze tank (1 answer)
I have transmission oil in the antifreeze tank and it doesn't run good
Just put new thermostat and waterpump and housing on.
Car goes to H & then up & down. Replaced-water pump, both H/C sensors, flushed 5x, heater core. Hose split & antifreeze everywhere thurs. Did it again yesterday but a diff one. Code reads ECU Any advice? 2002 mercury cougar- Manual- 4 CL. ADVICE?