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97 Grand Marquis
I have a 97 Grand Marquis that I'm a little unsure of my diagnosis on. Basically it has the lean codes P0171 & P0174. When I look at the scan tool readings, Ford IDS, the fuel trims are telling me the car is running lean under all conditions. I noticed the bar... Login to read more. 
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| Engine | 4.6 L |
| Trans | 4-speed Automatic (Electronic) |
Vehicle Data
1997 Mercury Grand Marquis GS 4.6L
| Engine | 4.6 L |
| Trans | 4-speed Automatic (Electronic) |
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