Oil Pressure Gage - Ranger-Forums - The Ultimate Ford Ranger Resource


2.9L & 3.0L V6 Tech General discussion of 2.9L and 3.0L V6 Ford Ranger engines.

Reply
 
LinkBack Thread Tools Search this Thread
  #1  
Old 01-01-2014
Member
Thread Starter
 
Join Date: Jan 2011
Location: Easthampton, Ma
Posts: 17
Oil Pressure Gage

I have a 99 Ranger 3.0L 4x4 XLT. The pressure gage is fluctuating. The engine had been running rough prior to the gage problem. I've replaced the oil pressure sending unit. After warming the engine up the gage still bounces around while idling in park. If I give it a little gas or put it in drive the needle reads normal. Not sure if I should check the Cam Position Sensor and shaft next or test for oil pump pressure next? I've read a lot of the threads here and I'm pretty sure the prognosis is not good but I like the truck. I'd hate to get rid of it. I've recently replaced the head gaskets and had the transmission rebuilt.
Reply With Quote
  #2  
Old 01-01-2014
djfllmn's Avatar
Moderator
 
Join Date: Mar 2009
Location: York, PA
Posts: 5,796
replace the camshaft sync
Reply With Quote
  #3  
Old 01-01-2014
Member
Thread Starter
 
Join Date: Jan 2011
Location: Easthampton, Ma
Posts: 17
Quote:
Originally Posted by djfllmn View Post
replace the camshaft sync
Is Cardrone a good part or should I stick with Motorcraft?
Reply With Quote
  #4  
Old 01-01-2014
djfllmn's Avatar
Moderator
 
Join Date: Mar 2009
Location: York, PA
Posts: 5,796
motorcraft only
Reply With Quote
  #5  
Old 01-02-2014
pearlkid9988's Avatar
Member
 
Join Date: Dec 2008
Location: Newnan Georgia
Posts: 828
Did you replace the sending unit with the factory original sending unit or the upgraded one that reads actual pressure? the stock unit is just an idiot light really it reads a set PSI and puts the needle in the center. If you bought the upgraded one then you also have to bypass the resistor on the back of the cluster to get it to read correctly. From your symptoms id say the synchronizer is the source of your rough idle but if the gauge is moving id say you got the aftermarket sending unit but have not bypassed the resistor so it doesn't know what to do with the signal its getting from the sending unit.
Reply With Quote
  #6  
Old 01-06-2014
Member
Thread Starter
 
Join Date: Jan 2011
Location: Easthampton, Ma
Posts: 17
Is it posible to not engage the oil pump shaft whem stabbing the sychronizer shaft. I went from a fluctuating oil pressure gage to no movement at all pegged to the low pressure side. The new sychronizer shaft is seated all the way no gap. There was a lot of sludge on the old sychronizer. The gear was worn but no teeth were missing.
Reply With Quote
  #7  
Old 01-08-2014
Member
 
Join Date: Jan 2014
Location: Spanish Fork, UT
Posts: 13
I'm having the same problem with my truck. Please post on here if you fix it! I have no idea what to do about it.
Reply With Quote
  #8  
Old 01-08-2014
Member
Thread Starter
 
Join Date: Jan 2011
Location: Easthampton, Ma
Posts: 17
What have you tried so far?
Reply With Quote
  #9  
Old 01-08-2014
Member
 
Join Date: Jan 2014
Location: Spanish Fork, UT
Posts: 13
Nothing yet. The guy at napa told me to get a gauge and see whats going on. But I don't really see how that is going to help
Reply With Quote
  #10  
Old 01-09-2014
Member
Thread Starter
 
Join Date: Jan 2011
Location: Easthampton, Ma
Posts: 17
I'm going to take apart my old synchronizer shaft and make a oil pump driver that will go on a drill and see if I can get the gage to move that way.
Reply With Quote
  #11  
Old 01-09-2014
Member
 
Join Date: Jan 2014
Location: Spanish Fork, UT
Posts: 13
Mine only does it when it's warmed up, not cold. Is that how yours is? And when I turn the motor off the gauge stays put and goes back to 0 very very slowly. I'm going to start by disconecting the gauge from sending unit. See if the gauge drops or not. If it does drop I'll replace the sending unit. After that I have no idea. I guess get a gauge and see what the pressure really is.
Reply With Quote
  #12  
Old 01-10-2014
Member
Thread Starter
 
Join Date: Jan 2011
Location: Easthampton, Ma
Posts: 17
Mine was bouncing back and forth between high and low when I came to a stop. It seemed to start once the engine was warmed up. I changed the sending unit and it had no effect. Next I changed the sychronizer and now I have no pressure at all. It's in the single digits temperature wise here so I've put the project on hold for now til it gets a little warmer. I'll let you know what happens. The 4.0L motor is a little different than the 3.0L keep that in mind.
Reply With Quote
  #13  
Old 01-12-2014
Member
Thread Starter
 
Join Date: Jan 2011
Location: Easthampton, Ma
Posts: 17
Low oil pressure mystery solved. Call me stupid I deserve it sending unit was un plugged.
Reply With Quote
  #14  
Old 01-15-2014
Member
 
Join Date: Jan 2014
Location: Spanish Fork, UT
Posts: 13
Mine was just the gauge!
Reply With Quote
  #15  
Old 01-15-2014
Member
Thread Starter
 
Join Date: Jan 2011
Location: Easthampton, Ma
Posts: 17
Kasey, my gage went 2 days with out flickering then started all over again. I'm going to try just letting it go. I'm pretty much convinced its the gage or an electrical problem. If it truely was low oil pressure my motor would be toast by now.
Reply With Quote
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
oil gage rangerstepside 2.9L & 3.0L V6 Tech 30 03-04-2012 09:57 PM
Oil Pressure Port Location for adding an aftermarket oil pressure sending unit FRXLT 2.9L & 3.0L V6 Tech 29 01-31-2012 11:05 AM
oil pressure gage dancing yellowbike 2.9L & 3.0L V6 Tech 1 01-16-2011 06:09 PM
Oil pressure gage dropped below peg IBTHOMAS General Technical & Electrical 1 05-20-2008 06:32 PM
Check gage light and no oil pressure reading Alon 4.0L OHV & SOHC V6 Tech 4 04-12-2007 02:24 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 04:38 AM.


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.