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	 2002 Ford F-150 XL 4.2L Misfire 
		
		I was brought this truck after everyone else gave up on it. It has a strong flutter at approximately 1500 rpm and at acceleration under load. I did smoke tests on vac system- checked good, I did fuel pressure [...], I checked injectors- all were firing.I check... 
                        
                            FIX posted 11/13/2009
                             
                 
                            
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| VIN | 1FTRF17262 | 
| Engine | 4.2 L / 6 cyl / GAS | 
| Trans | 4-speed Automatic (Electronic) | 
| Delivery | FI | 
| Emissions | OBD-II Compliant | 
| Symptoms | Misfire | 
| Occurs | Under Load, on Accel | 
Trouble Codes
| P1131 | Electric Vacuum Pump System Related PGM-FI Sensor Signal Malfunction | 
| P1151 | Fuel Rail Pressure - Maximum Positive Deviation | 
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 Vehicle Data
                2002 Ford F-150 XL
| VIN | 1FTRF17262 | 
| Engine | 4.2 L / 6 cyl / GAS | 
| Trans | 4-speed Automatic (Electronic) | 
| Delivery | FI | 
| Emissions | OBD-II Compliant | 
| Symptoms | Misfire | 
| Occurs | Under Load, on Accel | 
Trouble Codes
| P1131 | Electric Vacuum Pump System Related PGM-FI Sensor Signal Malfunction | 
| P1151 | Fuel Rail Pressure - Maximum Positive Deviation | 
                            
18 Replies Received
          18 Replies Received
          
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