differences in the 4.0's from 93 and up - 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 10-05-2009
Member
Thread Starter
 
Join Date: Oct 2009
Location: Massillon, OH
Posts: 8
differences in the 4.0's from 93 and up

I might be putting in a newer engine into my 1994 4.0L ranger. I think this one might be on it's way down. I think I here a slight rod knock. It has 179,000 I think the speedo shows 79,000, but it most likely is the 179,000.

So I was wondering if I got a newer engine what years I should look at getting. I want something with a lot less miles, so it lasts me and is worth doing this. So most likely it has to be a lot newer. Also will my current computer and wiring harness work with the newer engines as well? Any help appreciated.
Reply With Quote
  #2  
Old 10-05-2009
Downey's Avatar
RF Veteran
iTrader: (1)
 
Join Date: Oct 2007
Location: Muncy, PA
Posts: 8,470
Reply With Quote
  #3  
Old 10-05-2009
Member
Thread Starter
 
Join Date: Oct 2009
Location: Massillon, OH
Posts: 8
Thanks Downey. That was a good read. It was more oriented for rebuilding though. That may be an option I might do, but for now I am just looking for an engine with lower miles, so I don't have to dig into it too much. Basically though in that article I seen that 99 and up are SOHC instead of OHV. so does this mean I will need an engine that is 93-98? Or would the SOHC engines work in these cars? Would my transmission just bolt up to any of these engines? I am more concerned with wiring and accessories bolting up and the engine mount locations and what not.
Reply With Quote
  #4  
Old 10-05-2009
Downey's Avatar
RF Veteran
iTrader: (1)
 
Join Date: Oct 2007
Location: Muncy, PA
Posts: 8,470
you will want an 90-94 motor that is obI. are you sure you have a 94 because 94 was the first year they put the 6 digit odometers in, my truck has 271,000 miles on the original motor. it has never been rebuilt but has had off the gaskets replaced. if you truck is running fine i would say don't touch it let it run it is. who knows you may get another 100k out of it
Reply With Quote
  #5  
Old 10-05-2009
Member
Thread Starter
 
Join Date: Oct 2009
Location: Massillon, OH
Posts: 8
Yea it is a 94. The owners manual says 94 and the date it was manufactured was 10/03, so it would have been sold in 94.

I'm not positive if what I'm hearing is a rod knock. I will take a video of the sound and make a new thread.

What does obl. mean though.
Reply With Quote
  #6  
Old 10-05-2009
Woods-Rider's Avatar
Member
iTrader: (2)
 
Join Date: Apr 2008
Location: Hillsboro, OR
Posts: 1,108
Might as well do a 5.0 swap!
Reply With Quote
  #7  
Old 10-05-2009
Member
Thread Starter
 
Join Date: Oct 2009
Location: Massillon, OH
Posts: 8
Quote:
Originally Posted by Woods-Rider View Post
Might as well do a 5.0 swap!

No I don't need another fast vehicle. I just want something with decent gas mileage this will be reliable and I am just worried about this with so many miles.

I had a friend come over and he said it sounds like my piston is tapping something a tiny bit, but it isn't bad at all. Nothing is really missing. He said that my exhaust smelt a tiny rich, but I'm not sure when the last time this things spark plugs, wires, fuel filter was changed. So I'm going to do a tune up on it.

I will post that video tonight sometime.
Reply With Quote
  #8  
Old 10-05-2009
Downey's Avatar
RF Veteran
iTrader: (1)
 
Join Date: Oct 2007
Location: Muncy, PA
Posts: 8,470
Quote:
Originally Posted by pfar54 View Post
Yea it is a 94. The owners manual says 94 and the date it was manufactured was 10/03, so it would have been sold in 94.

I'm not positive if what I'm hearing is a rod knock. I will take a video of the sound and make a new thread.

What does obl. mean though.

OBI and OBII are the different diagnosis programs for motors in 96 all cars went to the OBII system
Reply With Quote
  #9  
Old 10-05-2009
01_ranger_4x4's Avatar
Member
iTrader: (4)
 
Join Date: Mar 2009
Location: Muskegon, Michigan
Posts: 3,585
Quote:
Originally Posted by Downey View Post
OBI and OBII are the different diagnosis programs for motors in 96 all cars went to the OBII system
its actaully OBDI and OBDII. but downey is right, in order for the new motor to plug right into your wiring harness you will need a 90-94 OBDI motor. you can run a 95 or later model year OHV 4.0 but you would need to change over intakes and a few other things to make it work with your year setup.
Reply With Quote
  #10  
Old 10-05-2009
Downey's Avatar
RF Veteran
iTrader: (1)
 
Join Date: Oct 2007
Location: Muncy, PA
Posts: 8,470
Quote:
Originally Posted by 01_ranger_4x4 View Post
its actaully OBDI and OBDII. but downey is right, in order for the new motor to plug right into your wiring harness you will need a 90-94 OBDI motor. you can run a 95 or later model year OHV 4.0 but you would need to change over intakes and a few other things to make it work with your year setup.
yeah your right i forgot the D
Reply With Quote
  #11  
Old 10-05-2009
01_ranger_4x4's Avatar
Member
iTrader: (4)
 
Join Date: Mar 2009
Location: Muskegon, Michigan
Posts: 3,585
Quote:
Originally Posted by Downey View Post
yeah your right i forgot the D
yeah, way to go!! lol
Reply With Quote
  #12  
Old 10-05-2009
Member
Thread Starter
 
Join Date: Oct 2009
Location: Massillon, OH
Posts: 8
Quote:
Originally Posted by 01_ranger_4x4 View Post
its actaully OBDI and OBDII. but downey is right, in order for the new motor to plug right into your wiring harness you will need a 90-94 OBDI motor. you can run a 95 or later model year OHV 4.0 but you would need to change over intakes and a few other things to make it work with your year setup.
Yea that's what I mean. I'm willing to get a new wiring harness and computer if I need to as long as it isn't a ridiculous price because most likely I won't find a 90-94 with low miles at all.

Intake is in intake manifold or tube? What other things would I need to make it work?

Quote:
Originally Posted by Downey View Post
yeah your right i forgot the D

Yea I thought you put OBL it got me confused.
Reply With Quote
  #13  
Old 10-05-2009
Toms994x4's Avatar
Member
iTrader: (4)
 
Join Date: Jul 2009
Location: Sanford, NC
Posts: 1,300
OBD=On-Board Diagnostics. (Just for reference)
The last 4.0 OHV used was 2000. They went to the SOHC in 2001.

Read this. There is also a difference in the year engines you are looking for. Hope it helps.

Why is there a distributor spot on the 4.0L engine!? - The Ranger Station Forums
Reply With Quote
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
4r55e and 5r55e differences... shadow905 Drivetrain Tech 24 05-03-2009 10:09 PM
13-50 and 13-54 differences Toreador4x4 Drivetrain Tech 24 04-24-2009 10:50 AM
99 3.0 and 2001 3.0 differences wvcat 2.9L & 3.0L V6 Tech 4 12-12-2007 03:09 PM
differences between level i and ii moelll General Ford Ranger Discussion 5 10-24-2007 09:12 PM
Differences between 97 and 98 ranger? SouthernMudSlinger General Ford Ranger Discussion 17 08-30-2006 03:10 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 11:50 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.