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2001 Mercury Cougar 2.5L Poor Idle Quality
Posted to Ford Driveability on 7/24/2008 5 Replies

Vehicle came in with noise in air filter box at just off of idle. Pinched hose from intake snorkle to IAC, noise went away. Cleaned IAC passages and IAC. No change. During compression test, all cylinders looked normal except for #3. Compression would go to 145...

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car Vehicle Data

2001 Mercury Cougar

VIN 1ZWFT61L71
Engine2.5 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / SEFI
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality
OccursIntermittently, Just Off Idle
Message Closed w/FIX

car Vehicle Data

2001 Mercury Cougar

VIN 1ZWFT61L71
Engine2.5 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / SEFI
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality
OccursIntermittently, Just Off Idle