What is the rubber hose (elbow) that comes out of the back of the throttle body that runs into the resonator and back to the valve cover?

Tiny
GOVOLS
  • MEMBER
  • 1999 FORD F-250
  • 100,000 MILES
Changed my plush and must have lost the small curved hose coming of of throttle body. Must have fallen in a crevice that I can’t get to.

Truck starts but won’t run.

Barry
Monday, February 10th, 2025 AT 2:26 PM

3 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 50,584 POSTS
Engine size? Images? I need more information to help you. Check out the images (below). Please upload pictures or videos in your response of any problems so we can see what to help you with.
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Tuesday, February 11th, 2025 AT 10:29 AM
Tiny
GOVOLS
  • MEMBER
  • 25 POSTS
It’s a 1999 F250 with 5.4.
It’s a hose that comes out the back of the throttle body and goes to the bank 3 valve cover. It has a resonator in between. The hose is there but it must be missing a fitting that attaches to the throttle.

I can’t take pictures. Line in East Tennessee and we’re having 6-8 inches of rain between now and Thursday.
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Tuesday, February 11th, 2025 AT 1:32 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 50,584 POSTS
Oh wow, that's a lot of rain. There is a hose that goes to the rear of the intake manifold. Please check the image below; let us know how it goes.
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Wednesday, February 12th, 2025 AT 9:06 AM

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