Wining sound f250 sd 5.4 1999

Asked by Jun 19, 2016 at 10:21 AM about the 1999 Ford F-250 Super Duty XL 4WD LB

Question type: Maintenance & Repair

Wining sound in truck. Sounds like powee
steering but is definately not. Was told to
change pcv valve any rhoughts

3 Answers

11,725

The PCV in the 5.4? made no change? Pitch of the whine increases with the rpms and eventually goes away. Regards

50

It's the hose that runs from pass. Side pcv to back of intake by firewall it's either cracked on rubber hoses or off

50

I am a 15 yr ford tech by the way Good luck

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