Two in depth questions about a 2006 4.0L - 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 11-13-2007
wydopnthrtl's Avatar
Member
Thread Starter
iTrader: (2)
 
Join Date: Dec 2005
Location: SE, Mi
Posts: 2,342
Two in depth questions about a 2006 4.0L

Hey Guys, I'd scoping out a few things and needs some answers that I can't find after searching.

1) Where is the IAT (intake air tempature sensor) on my 2006 4.0L?
I don't see one & am wondering if it's apart of the MAF??

2) Could someone tell me how far into the combustion chamber a known spark plug protrudes? If anyone has a head off a motor please take this measurement for me!

Regards,
Rich
Reply With Quote
  #2  
Old 11-13-2007
lifted97ranger's Avatar
Member
 
Join Date: Nov 2005
Location: Charlestown, IN
Posts: 1
i believe the IAT is on the driver side of the intake manafold......not for sure though..
Reply With Quote
  #3  
Old 11-13-2007
wydopnthrtl's Avatar
Member
Thread Starter
iTrader: (2)
 
Join Date: Dec 2005
Location: SE, Mi
Posts: 2,342
Up by the TB all I see is the TPS and the IAC. There are no other wires in that area. Do you mean down in of the runners? (the lightning has one in the runner)

Rich
Reply With Quote
  #4  
Old 11-13-2007
lifted97ranger's Avatar
Member
 
Join Date: Nov 2005
Location: Charlestown, IN
Posts: 1
i was thinking about the IAC Rich.....sorry for the cornfusion
Reply With Quote
  #5  
Old 11-13-2007
V8 Level II's Avatar
RF Veteran
iTrader: (4)
 
Join Date: Nov 2004
Location: Michigan
Posts: 7,835
2001+ Rangers have the ACT (formerly called the IAT) sensor in unit with the MAF sensor. Earlier trucks had the IAT separate from the MAF.
Reply With Quote
  #6  
Old 11-13-2007
wydopnthrtl's Avatar
Member
Thread Starter
iTrader: (2)
 
Join Date: Dec 2005
Location: SE, Mi
Posts: 2,342
Thanks Bob. I've never seen that before.. but seeing no other wires or sensors that's what I was thinking.

Excellent!

Now, anybody got a 4.0L head & spare spark plug laying around?

Rich
Reply With Quote
  #7  
Old 11-13-2007
greygooseranger's Avatar
Member
 
Join Date: Apr 2006
Location: SE Michigan
Posts: 3,293
^^^Hahaha.... What are you up to Rich?!?!?
Reply With Quote
  #8  
Old 11-13-2007
zabeard's Avatar
who?
iTrader: (8)
 
Join Date: Nov 2004
Location: IN
Posts: 26,045
Quote:
Originally Posted by wydopnthrtl
Thanks Bob. I've never seen that before.. but seeing no other wires or sensors that's what I was thinking.

Excellent!

Now, anybody got a 4.0L head & spare spark plug laying around?

Rich

NicksterSVT might. you need it for the measurements? I'll point him this way if i remember.
Reply With Quote
  #9  
Old 11-14-2007
wydopnthrtl's Avatar
Member
Thread Starter
iTrader: (2)
 
Join Date: Dec 2005
Location: SE, Mi
Posts: 2,342
Well.. I have an agenda. Not going to say what it is until the work is done. Just suffice to say that the plug is a key ingredient to making clean power.

After pulling one of my stock plugs I found that the nose length was 5mm longer than the favorite ones I was going to replace them with?

I've seen so many people report bad experiences with aftermarket spark plugs.
They blame the brand.. and I really don't think it's the plug makeup/brand. I think it's the nose length. I am suspecting that the ones people are using are too short and the spark is shielded.

And so before I setting on a plug.. I need to know how far the plug sticks into the chamber.

Any help is appreciated.

Regards,
Rich
Reply With Quote
  #10  
Old 11-14-2007
zabeard's Avatar
who?
iTrader: (8)
 
Join Date: Nov 2004
Location: IN
Posts: 26,045
eh i see what your saying but idk. i bought some NGK plugs and ran them for a while, it didnt run bad but it was nothing like the stock plugs so i changed them back.

if i remember correctly the plugs looked pretty much the same.

maybe i am mis-understanding you
Reply With Quote
  #11  
Old 11-14-2007
wydopnthrtl's Avatar
Member
Thread Starter
iTrader: (2)
 
Join Date: Dec 2005
Location: SE, Mi
Posts: 2,342
If you measure from the chamfer of where the plug bottoms out to the tip of the center electrode you'll see the measurement I'm looking for. The plug I want to use is 5mm shorter than the factory original one.

That means the spark kernal and therefor the flame front as it propigates away from the plug may or may not be shielded depending on how far it protrudes into the chamber.

I suspest that people who have complained of poor performance just might have used too short of a plug. Relying on Autozone or the like to determine which one is a correct replacement is a common mistake people make.

Rich
Reply With Quote
  #12  
Old 11-14-2007
Member
 
Join Date: May 2006
Location: Altoona, IA
Posts: 91
no thread of the plug should actually be visable in the head. In fact, I think the threaded portion is a universal length.

If your talking about the ground tab I believe that is also a universal dimension.

The differances are in the ceramic insulator on the center electrode. This is what decides the heat range. go here to see how a spark plug works and how the heat range influances spark plug performance.





Quote:
Originally Posted by wydopnthrtl
If you measure from the chamfer of where the plug bottoms out to the tip of the center electrode you'll see the measurement I'm looking for. The plug I want to use is 5mm shorter than the factory original one.

That means the spark kernal and therefor the flame front as it propigates away from the plug may or may not be shielded depending on how far it protrudes into the chamber.

I suspest that people who have complained of poor performance just might have used too short of a plug. Relying on Autozone or the like to determine which one is a correct replacement is a common mistake people make.

Rich
Reply With Quote
  #13  
Old 11-14-2007
wydopnthrtl's Avatar
Member
Thread Starter
iTrader: (2)
 
Join Date: Dec 2005
Location: SE, Mi
Posts: 2,342
Brant, I'm 5 steps ahead of ya..

The threaded portiton of a plug is not universal. They are differing in lengths.

Rich
Reply With Quote
  #14  
Old 11-14-2007
Member
 
Join Date: May 2006
Location: Altoona, IA
Posts: 91
well probably the best thing to do if you want to cross the autolites to another brand is to actually look it up on the manufactuers website or in their info book
Reply With Quote
  #15  
Old 11-14-2007
wydopnthrtl's Avatar
Member
Thread Starter
iTrader: (2)
 
Join Date: Dec 2005
Location: SE, Mi
Posts: 2,342
Quote:
Originally Posted by 99RangerXLT
well probably the best thing to do if you want to cross the autolites to another brand is to actually look it up on the manufactuers website or in their info book
No... because that's only limiting myself to the original design which is an "unknown" to me and what I'm wanting to do. I want to know how far into the chamber the plug sticks. Some are flush by design.. some are proud.

Regards,
Rich
Reply With Quote
  #16  
Old 11-14-2007
Z1K's Avatar
Z1K Z1K is offline
Member
 
Join Date: Oct 2007
Location: Courtice, ON
Posts: 62
While you are at it index your plugs for a couple cheap hp.

http://www.fordmuscle.com/archives/2000/07/indexplugs/
Reply With Quote
  #17  
Old 11-14-2007
wydopnthrtl's Avatar
Member
Thread Starter
iTrader: (2)
 
Join Date: Dec 2005
Location: SE, Mi
Posts: 2,342
That little tid bit is older than me! Been doing that myself for over 20 years now.
Reply With Quote
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Water Depth maximums and potential problems JeffLord General Ford Ranger Discussion 10 03-07-2012 07:07 AM
speaker mounting depth??? rangers dont die Audio & Video Tech 3 02-18-2011 12:02 PM
pinion depth, bearing preload and such thadirty530 Drivetrain Tech 20 01-07-2011 03:25 AM
In-Depth Video Questions sniper_101 Audio & Video Tech 5 03-03-2009 06:26 PM
How in depth would it be to install one of these? vansnxtweek Interior Semi-Tech 5 06-01-2008 06:54 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 07:44 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.