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#669034 - 04/04/06 07:54 AM How reliable is Ford's 4.0L V6?
bigwillie Offline


Registered: 04/22/05
Posts: 202
Loc: oklahoma city, ok
Hey guys, just wondering if anyone has had any experiances with Fords 4.0L engines, specifically the OHC versions? How reliable are these motors? I was just given a '95 Ford Explorer, and was wondering what parts are prone to failure, hopefully it's not prone to cracked heads like the 2.9L. All I have replaced so far is a stuck open thermostat, and the fuel filter.

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#669035 - 04/04/06 08:14 AM Re: How reliable is Ford's 4.0L V6?
heynow Offline


Registered: 05/09/05
Posts: 391
Loc: Nevada
My buddy has a ranger with the 4.0 v6 and has has the heads of many times, I believe because of cracks in the head.

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#669036 - 04/04/06 08:21 AM Re: How reliable is Ford's 4.0L V6?
Boomer58 Offline


Registered: 07/23/05
Posts: 26
Loc: Chesapeake,VA
If its a SOHC , intake manifold leaks and timing chain tensioners(rattle). We have about 50 trucks with the SOHC 4.0 at work and 40 have been to warranty for both of the above.So far no cyl head probs. Thank goodness for the 3 year 60k warranty. Strong running engines though, but troublesome. The DOHC is a lot better.

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#669037 - 04/04/06 08:27 AM Re: How reliable is Ford's 4.0L V6?
racer12306 Offline


Registered: 10/06/05
Posts: 2273
Loc: Baltimore, MD
there is a DOHC 4.0?

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#669038 - 04/04/06 08:39 AM Re: How reliable is Ford's 4.0L V6?
bigwillie Offline


Registered: 04/22/05
Posts: 202
Loc: oklahoma city, ok
Sorry guys in my post I mentioned the OHC I mistyped, what i really want to know about is the OHV engines, sorry for the confusion

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#669039 - 04/04/06 08:46 AM Re: How reliable is Ford's 4.0L V6?
1040 WreckerMan Offline


Registered: 10/04/05
Posts: 785
Loc: Western Washington
There is not a DOHC 4.0 V6 to my knowledge. There is a SOHC, one cam in each head. This is the current production 4.0 used in the Explorer/Ranger/Mustang lineups. There is a 4.6 DOHC engine, but has nothing other than the 4 in common with the SOHC 4.0 V6.

The SOHC 4.0 has a very stout bottom end and has a lot of potentail. The intake leaves something to be desired, but I haven't had any issues yet with any of the ones I deal with. The OHC 4.0 has more economical performance parts and is also a good engine. Nothing is without design flaws.

Check out Super Six Motor Sports for hotrod 4.0 parts.

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#669040 - 04/04/06 08:54 AM Re: How reliable is Ford's 4.0L V6?
Eric Smith Offline


Registered: 02/26/05
Posts: 2951
Loc: Kansas, USA
Drove one at work with 250k.. it was a 2001 and this was in 2003. The only thing that died on it was the water pump. Security companies are good test on trucks/cars.

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#669041 - 04/04/06 06:48 PM Re: How reliable is Ford's 4.0L V6?
02supercrew Offline


Registered: 06/15/04
Posts: 244
Loc: South Dakota
The 4.0L in your 95 is not a SOHC 4.0L motor.

They a very stout engine thatwill give you years of trouble free operation if it isn't neglected.

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#669042 - 04/05/06 09:27 AM Re: How reliable is Ford's 4.0L V6?
Jim 5 Offline


Registered: 05/25/05
Posts: 4009
Loc: Calgary Canada
Worry about the transmission behind it.

The transmissions in explorers and rangers behind those 4.0L engines were known to fail at around 120k miles.

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#669043 - 04/05/06 01:26 AM Re: How reliable is Ford's 4.0L V6?
Boomer58 Offline


Registered: 07/23/05
Posts: 26
Loc: Chesapeake,VA
My bad, SOHC only, thanks 1040, was thinking of the OHC. Neither has the durability or proven design of the 3.0 vulcan, IMHO.

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#669044 - 04/05/06 06:44 PM Re: How reliable is Ford's 4.0L V6?
GROUCHO MARX Offline


Registered: 07/24/02
Posts: 11410
Loc: The Sandhills of NewYorkistan
I, too, worry about the tranny in my Exploder.

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#669045 - 04/06/06 12:46 AM Re: How reliable is Ford's 4.0L V6?
bigwillie Offline


Registered: 04/22/05
Posts: 202
Loc: oklahoma city, ok
quote:
Originally posted by Jim 5:
Worry about the transmission behind it.

The transmissions in explorers and rangers behind those 4.0L engines were known to fail at around 120k miles.

That is one of the reasons I'm currently using Auto-Rx in the transmission, and then switching to SF Autoglide.

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#669046 - 04/06/06 12:58 AM Re: How reliable is Ford's 4.0L V6?
JK Offline


Registered: 11/02/05
Posts: 421
Loc: WI
pretty **** reliable i would say


Mine has 140,000 thousand miles and runs strong no coolant-consuming issues although it does leak oil

my brother's ranger with the 4.0 has 212,000 miles, no coolant loss, burns 1 quart of oil every 3,000 miles and runs strong.

the early 90's didn't have the greatest heads, but they were ok as long as you didn't overheat the motor, then they would start using coolant
i've heard some problems with the intake gaskets, but i never had the issue with mine or known of anyone who's had problems.

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#669047 - 04/06/06 02:46 AM Re: How reliable is Ford's 4.0L V6?
Colt Offline


Registered: 02/28/05
Posts: 1694
Loc: NJ
quote:
Originally posted by bigwillie:
quote:
Originally posted by Jim 5:
Worry about the transmission behind it.

The transmissions in explorers and rangers behind those 4.0L engines were known to fail at around 120k miles.

That is one of the reasons I'm currently using Auto-Rx in the transmission, and then switching to SF Autoglide.
I went with Amsoil ATF at 13K miles in my '05.

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#669048 - 04/06/06 03:32 AM Re: How reliable is Ford's 4.0L V6?
JK Offline


Registered: 11/02/05
Posts: 421
Loc: WI
some ways of pro-longing.


i added a secondary cooler next to the factory cooler....and i added and Auxilary spin-on filter to help clean the fluid clean and particle free


fluid was red when i bought it at 95,000 miles, i've dropped the pan twice since then, and now i change the auxilary filter every other oil change, with 140,000 miles the fluid is still red, i dunno if its the original transmission though.

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