× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network
1999 Lincoln Navigator 5.4L Whistle Noise, Vacuu
Posted to Ford Driveability on 9/11/2009 9 Replies

Hi, thanks for taking time to read this. I have a 1999 Lincoln Navigator w/5.4 DOHC in the shop that has a very strange whistle noise coming for the engine compartment. I am 95% sure it's a vacuum leak, even though there are no lean codes or any other codes in...

9 Replies Received (View Replies)

  Related Documents & Media  1999 Lincoln Navigator

 
Message Closed w/Summary

car Vehicle Data

1999 Lincoln Navigator

VIN 5LMPU28A4X
Engine5.4 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsWhistle Noise, Vacuu
OccursAlways
Message Closed w/Summary

car Vehicle Data

1999 Lincoln Navigator

VIN 5LMPU28A4X
Engine5.4 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsWhistle Noise, Vacuu
OccursAlways