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1991 Mercury Cougar LS 3.8L Poor Idle Quality
Posted to Ford Driveability on 9/17/2002 9 Replies

FORD 3.8 ROUGH IDLE

91 Ford Thunderbird, 100,000 miles

Problem: Engine idles rough, much more pronounced with cold engine. With cold engine and dropped in gear, engine idles very rough. Heavy vibration. Gets better with warm engine, but does not go away. It...

9 Replies Received (View Replies)

  Related Documents & Media  1991 Mercury Cougar LS

 
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car Vehicle Data

1991 Mercury Cougar LS

VIN 1MEPM6044M
Engine3.8 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
SymptomsPoor Idle Quality
OccursCold, Worst When Cold
Message Closed w/FIX

car Vehicle Data

1991 Mercury Cougar LS

VIN 1MEPM6044M
Engine3.8 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
SymptomsPoor Idle Quality
OccursCold, Worst When Cold