Can't find Vacuum hoses and leak - Ranger-Forums - The Ultimate Ford Ranger Resource


4.0L OHV & SOHC V6 Tech General discussion of 4.0L OHV and SOHC V6 Ford Ranger engines.

Reply
 
LinkBack Thread Tools Search this Thread
  #1  
Old 12-09-2013
Member
Thread Starter
 
Join Date: Oct 2013
Location: Portland, OR
Posts: 6
Can't find Vacuum hoses and leak

Hi, I have a 2000 4.0. A couple weeks ago i got po171 and po174. I read on here that it could possibly be a leak in an elbow on a vacuum hose. I can not find that hose and elbow for the life of me, I have searched for hours. I've looked at other diagrams for other years and engines, all they're all different from my engine compartment. I cant find any diagrams for my year. Any help or knowledge of diagrams would be much help.
Thanks!
Reply With Quote
  #2  
Old 12-09-2013
Member
 
Join Date: Oct 2013
Location: Maine
Posts: 45
Quote:
Originally Posted by winchesterbc View Post
Hi, I have a 2000 4.0. A couple weeks ago i got po171 and po174. I read on here that it could possibly be a leak in an elbow on a vacuum hose. I can not find that hose and elbow for the life of me, I have searched for hours. I've looked at other diagrams for other years and engines, all they're all different from my engine compartment. I cant find any diagrams for my year. Any help or knowledge of diagrams would be much help.
Thanks!
If it is the PCV hose, check drivers side at the rear of the valve cover. short s shaped hose connection the intake to the PCV.
Reply With Quote
  #3  
Old 12-09-2013
Member
Thread Starter
 
Join Date: Oct 2013
Location: Portland, OR
Posts: 6
I checked that i didn't see any tears or holes in it.
Reply With Quote
  #4  
Old 12-09-2013
Member
 
Join Date: Oct 2013
Location: Maine
Posts: 45
Quote:
Originally Posted by winchesterbc View Post
I checked that i didn't see any tears or holes in it.
One way people here have indicated to find leaks is ... Spray Carb cleaner, ether/engine starter fluid, in light bursts around the top of your engine, near the manifold, hose connections, where ever you see vac lines, or manifold connections, while the engine is running. Any pick up in RPM's will indicate a possible vac leak. you may find that hose this way.
Reply With Quote
  #5  
Old 12-09-2013
Member
Thread Starter
 
Join Date: Oct 2013
Location: Portland, OR
Posts: 6
Thank you, I'll try that and get back. thanks
Reply With Quote
  #6  
Old 02-01-2014
Member
Thread Starter
 
Join Date: Oct 2013
Location: Portland, OR
Posts: 6
Took me along time to get back but I've tried all the things to find if i have a vacuum leak and come to the conslusion that it must be something else causing the codes. So what else could be going on that are causing lean 02 sensor bank 1 and 2 codes. I've cleaned the MAF already. thanks!
Reply With Quote
  #7  
Old 02-03-2014
Member
 
Join Date: Oct 2013
Location: Maine
Posts: 45
Possible ... Low fuel pressure (pump weak or clogged, filter clogged) Bad O2's (not likely lose both upper O2's at the same time) Third O2, down stream sending wrong signal confusing ECM. Other sensors sending wrong info to ECM.

All these possibles require testing of each sensor and fuel pressure, to see if they all fall in Manufacture's parameters. Not an easy nor quick task. But there are vids posted to guide ya thru this.

I bought a OBDII program that works thru my laptop, giving me real time reads on all sensors and engine data. Not only gives me codes, it explains those codes and possible solutions if I enter that data on a website.

Good Luck, lets us know how your doing.
Reply With Quote
  #8  
Old 02-03-2014
Member
 
Join Date: Dec 2013
Location: Maryland
Posts: 5
I just went through this recently and tried quite a few things. Drove fine so not a big rush. I changed my upper intake gaskets and codes were gone. They would show up when cold and started last winter. When they came back this fall I started to slowly check all the usual suspects.
Reply With Quote
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Vacuum troubles, hoses dangling AGraham 2.9L & 3.0L V6 Tech 0 10-01-2014 05:45 PM
Vacuum leak? Vents no longer work jtslmn720 2.9L & 3.0L V6 Tech 25 03-21-2011 12:54 PM
How can I put Seaform through the vaccum hoses? briz General Technical & Electrical 8 09-17-2010 09:07 PM
Can't find the source of my coolant leak? TNorbe03 4.0L OHV & SOHC V6 Tech 4 10-20-2009 06:43 PM
can anyone show me how to extend hoses? TippnOver Drivetrain Tech 17 01-17-2005 05:15 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -6. The time now is 03:17 PM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.