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2000 Mercury Cougar 2.5L MIL Lamp on
Posted to Ford Driveability on 10/18/2007 15 Replies

We are ready to replace the cat when we raised the car up and got a surprise. There is no O2 sensor after the main converter, only after the pre-cats that are part of the exhaust manifold!! So, now, do we replace the pre-cat for bank one or the main converter ...

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  Related Documents & Media  2000 Mercury Cougar

 
Message Closed w/FIX

car Vehicle Data

2000 Mercury Cougar

VIN 1ZWHT61L7Y
Engine2.5 L / 6 cyl / GAS
Trans5-speed Standard
DeliveryFI / SEFI
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursIntermittently

Trouble Codes

P0420Catalyst Efficiency Below Threshold (Bank 1)
Message Closed w/FIX

car Vehicle Data

2000 Mercury Cougar

VIN 1ZWHT61L7Y
Engine2.5 L / 6 cyl / GAS
Trans5-speed Standard
DeliveryFI / SEFI
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursIntermittently

Trouble Codes

P0420Catalyst Efficiency Below Threshold (Bank 1)