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1993 Mercury Cougar XR-7 3.8L Poor Idle Quality
Tuned this auto at 52,000 miles and cleaned injectors. Came in with 72,000 miles - rough idle in gear - runs great. Replace Plug wires and cap - no codes. Cleaned throttle body. Short Term Fuel Trim is bouncing between -1 and -15 in gear at idle. Any ideas...
FIX posted 5/16/1999
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| VIN | 1MEPM6245P |
| Engine | 3.8 L / 6 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI / EFI |
| Emissions | OBDI |
| Symptoms | Poor Idle Quality |
| Occurs | Idle |
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Vehicle Data
1993 Mercury Cougar XR-7
| VIN | 1MEPM6245P |
| Engine | 3.8 L / 6 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI / EFI |
| Emissions | OBDI |
| Symptoms | Poor Idle Quality |
| Occurs | Idle |
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