 
				
	| 2003 Ford F-150 Lariat 5.4L Differential vent I had a vacuum whistle that I traced to the front differential. It had vacuum connected to the vent above the axle actuator of the differential and the pinion seal was whistling. Talk about fun trying to find that noise. My question, did it come from the f... 
                        
                            FIX posted 4/26/2019
                               
                    iATN Members:  Login to view full TechHelp request Auto Repair Pros: Join iATN to read this TechHelp request Vehicle Owners: Find a nearby iATN member to repair your vehicle 11 Replies Received (View Replies)11 Replies Received (Hide Replies)
 | Message Closed w/FIX 
 | 
| VIN | 2FTRX08L03 | 
| Engine | 5.4 L / 8 cyl / GAS | 
| Trans | 4-speed Automatic (Electronic) | 
| Delivery | Fuel Injection | 
| Affected | Differential Vent | 
| Conditions | Vacuum Whistle | 
Message Closed w/FIX
            
             Vehicle Data
 Vehicle Data
                2003 Ford F-150 Lariat
| VIN | 2FTRX08L03 | 
| Engine | 5.4 L / 8 cyl / GAS | 
| Trans | 4-speed Automatic (Electronic) | 
| Delivery | Fuel Injection | 
| Affected | Differential Vent | 
| Conditions | Vacuum Whistle | 
 11 Replies Received
11 Replies Received
 11 Replies Received
          11 Replies Received
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