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1990 Mercury Cougar LS 3.8L Poor Idle Quality
Vehicle idles high about 1500 to 2000 at idle . 90 Mercury Cougar 3.8l .. Chacked fro codes indicated possible sludge build in throtle body.. cleaned thtotle body/plate no change..replace ISC motor no change,instslled spacer for ISC motor no change.. Also trie...
FIX posted 3/17/1999
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| VIN | IMEPM6046L |
| Engine | 3.8 L / 6 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI |
| Symptoms | Poor Idle Quality |
| Occurs | Always |
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Vehicle Data
1990 Mercury Cougar LS
| VIN | IMEPM6046L |
| Engine | 3.8 L / 6 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI |
| Symptoms | Poor Idle Quality |
| Occurs | Always |
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