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I cannot find the other end of a vacuum-hose routing

Tiny
DUMO JACK
  • MEMBER
  • 1998 FORD F-150
  • 250,000 MILES
Please help me. Give me a vacuum hoses routing picture for my truck XL, 4.2L gasoline engine. I greatly appreciate your previous advice.
Monday, February 13th, 2012 AT 4:17 AM

30 Replies

Tiny
CJ MEDEVAC
  • MECHANIC
  • 11,004 POSTS
I found this diagram. The only f-150 with a 4.2

this was the heading:

1998 ford pickup f150
fig. 7: vacuum diagram (f-150 & van - calibration no. 8-44r-r05 (nlt1) - 4.2l)
courtesy of ford motor co.

Check out the diagrams (Below). Please let us know if you need anything else to get the problem fixed.
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Monday, February 13th, 2012 AT 7:45 AM
Tiny
BEAMS
  • MEMBER
  • 1 POST
  • 1998 FORD F-150
Engine Mechanical problem
1998 Ford F150 6 cyl Two Wheel Drive Automatic

Where can I find diagrams for hoses and Vacuum lines? I'm replacing the engine and I'ts not in my Hanes manual.
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Tuesday, April 9th, 2019 AT 2:35 PM (Merged)
Tiny
BMRFIXIT
  • MECHANIC
  • 19,053 POSTS


https://www.2carpros.com/forum/automotive_pictures/99387_f150_98_1.jpg

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Tuesday, April 9th, 2019 AT 2:36 PM (Merged)
Tiny
2CP-ARCHIVES
  • MEMBER
  • 4,540 POSTS
  • 1998 FORD F-150
  • V8
  • 2WD
  • AUTOMATIC
  • 95,000 MILES
I installed the top intake gasket. I have one vacuum hose I can’t find to reinstall. Could you send me a diagram please?
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Tuesday, April 9th, 2019 AT 2:36 PM (Merged)
Tiny
2CP-ARCHIVES
  • MEMBER
  • 4,540 POSTS
Your best bet now is to take your vehicle to your local mechanic or find another 1988 Ford like yours and note the location of the vacuum hoses or buy a shop manual. In the future, take a picture of your engine before starting the work to refer to later, as you need it.
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Tuesday, April 9th, 2019 AT 2:36 PM (Merged)
Tiny
KBSINCO1
  • MEMBER
  • 1 POST
  • 1987 FORD F-150
  • V8
  • 4WD
  • AUTOMATIC
  • 130,000 MILES
I recently had to remove my carbeurator for repair and when I replaced it I think I have crossed some vacuum lines because now the engine idles rough especially after it warms up. How do I find out where I went wrong
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Tuesday, April 9th, 2019 AT 2:36 PM (Merged)
Tiny
BMRFIXIT
  • MECHANIC
  • 19,053 POSTS


https://www.2carpros.com/forum/automotive_pictures/99387_carb_1.jpg

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Tuesday, April 9th, 2019 AT 2:36 PM (Merged)
Tiny
ALINXIE
  • MEMBER
  • 1 POST
  • 1997 FORD F-150
  • 150,000 MILES
Vacuum line 1997 ford f150 very short elbow on top of intake
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Tuesday, April 9th, 2019 AT 2:36 PM (Merged)
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,747 POSTS
The one I think you are refering to you runs to the intake and is well know for dry rotting and causing an engine rough idle.
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Tuesday, April 9th, 2019 AT 2:36 PM (Merged)
Tiny
ARCHER_SKI
  • MEMBER
  • 1 POST
  • FORD F-150
Can you please tell me where I can find the vacuum hoses on my 1990 Ford f-150 v6?
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Tuesday, April 9th, 2019 AT 2:36 PM (Merged)
Tiny
BLACKOP555
  • MECHANIC
  • 10,371 POSTS
Front of the hood usually is wehre the vacum canister is located. The lines come off of it
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Tuesday, April 9th, 2019 AT 2:36 PM (Merged)
Tiny
TIDBUM
  • MEMBER
  • 1 POST
  • 1989 FORD F-150
Engine Mechanical problem
1989 Ford F150 V8 Two Wheel Drive Manual

I need a free downloadable diagram for a 5.0 e.F.I. Vacum line diagram for whole engine Please help, HELP !Thanks wendy
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Tuesday, April 9th, 2019 AT 2:36 PM (Merged)
Tiny
BLACKOP555
  • MECHANIC
  • 10,371 POSTS
Chances are your not going to find that for free.

https://www.2carpros.com/kpages/auto_repair_manuals.htm

would be yoru best bet or you could try a local library for diagrams, but they wont be as detailed.
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Tuesday, April 9th, 2019 AT 2:36 PM (Merged)
Tiny
GUNSTER
  • MEMBER
  • 3 POSTS
  • 1999 FORD F-150
  • V8
  • 4WD
  • AUTOMATIC
  • 130,000 MILES
I noticed a black vacuum type hose bundled with a red and green hose located to the left against the firewall. The red and green(maybe blue it's faded)connected to two connection points which also have electrical connections. The black hose is not connected to anything and I can't find anywhere it would go, doesn't seen to affect perfornance, it has a sort of bend in the last couple of inches.I just replaced the upper vacuum tank as it was busted.I had been looking for any other possible leaks and noticed the hose, it is not connected to the vacuum side but goes downward on the left side of the engine.
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Tuesday, April 9th, 2019 AT 2:36 PM (Merged)
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,747 POSTS
Is thre any vacuum to it when the engine is running?
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Tuesday, April 9th, 2019 AT 2:36 PM (Merged)
Tiny
GUNSTER
  • MEMBER
  • 3 POSTS
With the engine running it does not pull any vacuum. This is a plastic line, there is no swell near the end of it like the ones with rubber boots, just curved near the end.
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Tuesday, April 9th, 2019 AT 2:36 PM (Merged)
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,747 POSTS
If it is plastic, chances are it broke and the other end is hidden in a place you can't see it. Have you tried spraying starting fluid around the area where it may have been to see if the RPM's go up? If you do it, be careful. It could catch fire if it hits an area that is hot enough on the engine.
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Tuesday, April 9th, 2019 AT 2:36 PM (Merged)
Tiny
GUNSTER
  • MEMBER
  • 3 POSTS
It doesn't appear broken and doesn't seem to have any effect on anything.I have an excellent picture of it but I can't get it to appear here.
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Tuesday, April 9th, 2019 AT 2:36 PM (Merged)
Tiny
IDELPINO
  • MEMBER
  • 1 POST
  • 1997 FORD F-150
  • V8
  • 4WD
  • AUTOMATIC
  • 101,500 MILES
I have replaced the DPFE Sensor, EGR Regulator, EGR Valve. Cleaned the intake EGR from the vacuum head checked the vacuum hoses. The only thing that I have noticed is that the green vacuum hose that comes off the EGR is that I can not feel a suction on the hose. Is this normal?
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Tuesday, April 9th, 2019 AT 2:36 PM (Merged)
Tiny
2CARPRO JACK
  • MECHANIC
  • 11,533 POSTS
The green line wont have any vacuum until the PCM wants to apply EGR, usually at light throttle cruising. If yyou have access to a vacuum gauge, run a line to the green line (EGR disconnected) so that you can watch the gauge when driving to see if the EGR is being applied. This system also should have an EGR solenoid that could fail keeping it from applying vacuum to the valve
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Tuesday, April 9th, 2019 AT 2:36 PM (Merged)

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