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1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

Code 311

Old Feb 11, 2009 | 06:17 PM
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Code 311

I have a 95 f-150 w/5.0 automatic. I scanned the codes and pulled a 311,Thermactor air system inoperative (right side). What can cause this code? The truck has been sputtering and missing from time to time, even after a tune up. All plug wires are routed as the diagram shows, with additional seperators.
 
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