2000 4.0 OHV engine swap into a 2001 4.0 SOHC 5 speed manual Sport Trac....Will it link OK to 5 speed manual and the rest.......
like the mod box. Also would I need to get a 4.0OHV that was manual???

thanks

 

No, the 2001 4.0l SOHC computer(PCM) can't run the 4.0l OHV engine, there would be many codes and sensor issues along with running issues

Engines are the same for manual or automatic use in any vehicle

You could use a 2001-2011 4.0l SOHC from any Ford Model or Mazda B4000 for a replacement engine, you may need to swap over your intake to the later model engine because of wiring connection changes
Always replace the 2 long chain tensioners on any used 4.0l SOHC engine, they need to be replaced every 100k miles after that
Also change Knock sensor
And rear main seal<<<on any engine when transmission is off

 

Ron D .......does this change anything on a 2000 OHV to 2001 SOHC........thanks saw this post somewhere....I assume the 2001 is the same as
the 2000 OHV they are talking about the 2000 was on the line for newer SOHC .........PCM might work below if the below is correct in 2001???????

PCM pinouts

I found the following differences in the PCM pinouts from my 2000 wiring diagrams. Probably the same for a 1999

SOHC
#32, knock sensor rtn
#43, message center (fuel flow)
#46, fuel cap indicator
#57, knock sensor input
#61, heated oxygen sensor #22
#96, heated oxygen sensor #22

OHV
#32, not used
#43, not used
#46, not used
#57, not used
#61, not used
#96, not used

Electrically the SOHC PCM should support the OHV engine. The PCM will need to be reprogrammed. Do you have a flash reprogrammer? My SCT X3 Power Flash cost about $400.

 

Sorry not following you

4.0l OHV and 4.0l SOHC used different wiring harness and computers
4.0l OHV runs 9.0:1 compression and 160HP, 4.0l SOHC runs 9.7:1 compression and 207HP, totally different animals for fuel and spark, i.e. computer controls
You CAN do anything you want, but seems like alot of work for marginal results

4.0l SOHC had knock sensor so it can run regular gas(87 octane)
Both years would have O2 sensor "12", 1995 and up had this O2 sensor
Dual exhaust would have O2 sensor "22"
"O2 sensor 2's" are after the Cats, so "single" exhaust would only need the one, O2 "12"

O2s "11" and "21" are upstream O2s near exhaust manifolds

Explorers had "message centers" Rangers did not, but not involved with engine operation
Gas cap indicator may or may not be on Ranger dash, it was an EVAP system "gross leak" indicator, not involved with engine operation

 

Thanks Ron.....Question was reading some on google search it was implied that the Mustang 4.0 2008 up the timing chain issue was fixed...may 2005 ....Did they "Ford" ever fix the time chain issue or thats a corp. lie .....still see "time chain issue" post on 2005 up.....You seem quite knowledgeable on diff. issues....or was this a manufactured problem for the service dept. to have something to do like take someones money with a candy *** T. Chain problem...
Seems like they forgot to chrome the bolt.....also....
thanks RD...........................gray

 

Winston Churchill I have counter your Quotes......RD
"If you have ten thousand regulations you destroy all respect for the law."
"The empires of the future are the empires of the mind."
"Tact is the ability to tell someone to go to hell in such a way that they look forward to the trip." -and...
"I may be drunk Miss, but in the morning I will be sober and you will still be ugly."

 

Timing chains were never the issue with the 4.0l SOHC, the 2 long chain tensioners were the issue

The original tensioners had issues with the internal springs, wasn't 100% failure but up towards 15% so way too high
These are hydraulic tensioners so oil pressure holds them out and tight when engine is running
On startup the SPRINGS need to hold then tight
So when spring failed the chain would BANG on guide when cranking and over time this would break the guide loose, and you get THE RATTLE, damage done, no warning for this, which is why I recommend changing the tensioners every 100k miles, like changing the oil or trans fluid or tires or brakes, you do it BEFORE these things NEED to be changed, preventative maintenance

4.0l SOHC came out as an optional engine in Explorers in 1997, by 1999 there were quite a few timing chain issues showing up at Ford dealers which Ford chalked up to lack of oil service, blame the customers, lol, always the first thing to do, ALWAYS
Then Ford Dealers told Ford it was happening to DEALER SERVICED ENGINES...........................oops
Anyway, Ford was on the case by 2001 and looked at/cut apart the old tensioners to discover the issue
Redesign on the spring and the new models were being install in new 4.0l SOHCs assembly plants in 2003 so most 2004 vehicles with 4.0l SOHC had the new tensioners, but could be a roll of the dice, 2005 model years would for sure have them

But all parts can fail, even it its less than half of 1%, it could be YOURS, lol, so preventive maintenance

 

So its the hydraulic tensioners...not the chain assembly.......So is their a fixed hydraulic tensioners now or Ford still thinking about....
thanks RD....

 

Re-design was in 2001 so in engines after 2003/4 model years

This was never a high enough failure rate to warrant a "recall" just became a "known issue"

Only buy Motorcraft tensioners, they will all be the new design, cost more but having to PULL THE ENGINE costs even more, lol

 

........So the 2001 had the redesign tensioner in them ????.....Those new tensioner dont come with washer can you use the old one?
..Thanks RD

 

NO, 2001 is when they figured out there was a problem with the tensioners, sometime in 2003/2004 is when the fixed the problem.

 

+1 ^^^^

Once the problem was found then new tensioners could be built to those specs, that takes time, say end of 2002
Then the newly designed tensioners are shipped to the Engine Assembly plants, so started to be put into engines in say 2003 as they are assembled
Then these engines are shipped to Vehicle Assembly plants, where they sit, and its usually first in first out, so engines assembled in 2002 go into 2003 vehicles, but a 2001 engine may still be left over so it goes into a 2003 vehicle
Depends on how many 4.0l SOHC engine were assembled vs how many 4.0l SOHC vehicles were sold
So save bet is 2005, 2004 would most likely be OK as well

But not an issue at all if 4.0l SOHC does NOT have "the rattle" when you get it and YOU CHANGE the tensioners to the new design, then its done regardless of the year of the 4.0l SOHC

Long chain tensioners can fail in ANY engine, and with all the DOHC engines around now they DO
Nice thing about the 4.0l SOHC is that these tensioners can be changed without much disassembly, same can't be said for 99% of the other engines with long timing chains, lol

 

 

Great video

Tells you why you NEED to change these two tensioners every 100k miles

Saw another video years ago, pre-youtube, that showed broken spring inside a failed tensioner

 

RD....I never thought about it...but.....the other blogs...with 4.0 timing chain problems .......might all be
from not the chain, but waiting for the chain to make noise vs. putting in the tensioners before it happens
when you here the chain its prob.....to late???? or close....
Thanks....

 

"The rattle" is from a BROKEN chain guide, so damage done
There is no warning sign, or sound, it just happens

You can not change the oil in the engine and wait for a rod knock noise and THEN change the oil, but I wouldn't recommend it, lol

Before a guide breaks there would be no noise from a failed tensioner, just like there would be no noise until a rod bearing over heated, once there is a noise, damage is done