Question about 1996 Mercury Grand Marquis

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The check engine light came on last night. I stopped by the local parts store, they checked the vehicle with a meter, and it showed the code was P1120. They had no idea what the code was. I did have a raw gas smell the night before, however I had just fueled up, and put it on that.

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This P1120 code is indicating that you have a problem with the trottle position sensor, thes could cause a rich fuel mixture and raw gas smell

Posted on Oct 09, 2010

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