Question about 1991 Ford F150

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Vacuum line diagram for 1991 ford f-150 - 1991 Ford F150

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Posted on Jan 02, 2017

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  • 124 Answers

SOURCE: 1987 Ford Ranger 2.0 Liter Vacuum Line Diagram

can you see the diagram under the hood? if not try searching a junkyard for either the diagram or a complete motor

Posted on Mar 23, 2009

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  • 144 Answers

SOURCE: 1989 ford f 150 v-belat installation diagram

Hello! Which engine do you have? I will enclose belt routing for all possibilities. Hope this information helps!2e91594.gif74265e4.gif362da85.gif

Posted on Sep 16, 2009

SOURCE: emissions/vacuum lines

Check the library,they have books that can help.you need the engine size,manual or automatic trans,and engine calibration number,on the valve cover
(if it is there)

Posted on Oct 07, 2009

  • 1 Answer

SOURCE: vacuum leak need diagram

diagram for glove department
need to fix lock

Posted on Oct 22, 2009

  • 168 Answers

SOURCE: vacuum line diagram for 1998 windstar

look on the engine compartment either on the finder or the hood

Posted on Dec 13, 2009

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2 Answers

I need a vacuum line diagram for a 1987 4.9 f150


I FOUND THIS FOR A 1986 IT SHOULD BE THE SAME THEY ARE IN THE CHILTONS BOOK BUT IF YOU CAN'T GET IT YOU MAY ABLE TO AT THE LIBRARY TO COPY ALL 4.9 DIAGRAMS WILL BE THE SAME VAN / PICK-UP SO ANOTHER MODEL FORD BOOK WILL HELP YOU BUT I ACTUALLY DO HAVE ONE BUT ITS 150 MILES FROM ME IN STORAGE IN ANOTHER STATE GOOD LUCK
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Feb 19, 2015 | 1987 Ford F 150

1 Answer

Vacuum lines diagram 1991 ford econovan


You aren't going to find vacuum diagrams on this site, you are going to have to find an old haynes manual on amazon or somewhere

Apr 02, 2014 | 1991 Ford Econoline

1 Answer

I have a 1991 ford f150 6cyl. when I give it a light gas its runs ok, but if I give it a hard gas it seem to bogg down and shake, sputter. why is it doing this? I did change the fuel filter and still...


Ahhh. you have one of the first verisions of fuel injection... check all your vacuum lines, had a 89 ford f-150 I-6 with a similar problem years back. did everything from change vieciel speed sensor to the oxygen sensor... it was a tiny leak in vacuum line... Good luck!!

Feb 24, 2012 | 1991 Ford F150

1 Answer

My 1991 ford 150 with a 351 engine fuel injection is reving up to 25000 turns just sitting parked it goes up and down on the revs. can the problem be my egr???


Yes it can be an EGR valve which would be like a vacuum which sounds like your problem. You can take a can of carb cleaner and spray it around the EGR valve an vacuum lines as well as along the intake manifold. If the idle changes when spraying in a certain location, you have found the area where the vacuum leak is & can narrow it down from there. I hope this helps and good luck.

Jul 19, 2011 | 1991 Ford F150

2 Answers

1982 f-150 need diagram of vacuum lines to carborator


their is a diagram under the hood its the best i have found thus far

Dec 11, 2010 | 1982 Ford F 150

1 Answer

I have a 1970 ford f-150 with a holly four barrel carb im missing all the vacuum lines but one i was needed a diagram map to show where they run an connect


go to the library, the auto manual section and look it up. If not successful, try going on-line and browse google. Type-in Ford F-150 repair manual. Good Luck

Apr 25, 2010 | Ford F-150 Cars & Trucks

2 Answers

Ford F-150 2001 when you run the A\C and go to


this is very common problem, theres a vacuum leak.check the vacumm lines under the hood also check the one that goes inside to heater controls, whats happening is that it looses vacuum when you accel because the motor takes it,theres a one way valve that holds the vaccum when this happens but with a leak it cant hold vacuum,heres a vacuum diagram to help you check the vacuum lines,i dont know which engine you have in that 150 but this will be close. take good look at the circled areas in the diagrams,good luck, hope this helps you.d3fa7c0.giff57ca3c.gif

Mar 06, 2010 | 2001 Ford F150 Styleside SuperCrew

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