Ford Explorer Forum - Forums for Ford Explorer Enthusiasts


Reply
 
Thread Tools Search this Thread Display Modes
 
Old 07-27-2011, 03:55 PM   #1
DoraDaExplora
Member
 
DoraDaExplora's Avatar
 
Join Date: Jan 2011
Location: East Coast, Australia
Posts: 33
Replacing Tensioner can fix timing Chain problem???

I went into FOrd the other day ( not my usual dealer) and spoke to a mechanic, He said that if the timing chain issue wasnt to bad, they could replace the tensioners without taking the engine out, and that SHOULD fix the problem.... ($500)

I went to my local Ford dealer and they said you shouldnt do it as the Cogs could be warn etc and that its a bad idea.....

I can see what he is saying as I dont know if the guides are stuffed etc... I got a feeling its just the tensioner as the noise isnt always there....

Ie: When I first start the truck in the morning I get the rattle, If I turn it straight off and start it again its not there, for the rest of the drive..... SOme days I dont hear it at all, other days its all I can hear....

Just wondering if I should go the cheaper way first....? ANy suggestions.....
__________________

__________________
DoraDaExplora is offline   Reply With Quote
Old 07-27-2011, 08:38 PM   #2
CDW6212R
Senior Member
 
Join Date: Feb 2004
Location: Knoxville, TN
Posts: 11,919
Jump over to the Explorer forum(the big one) and hunt "SOHC tensioners cassettes".

The external tensioners have a lifespan of about 75k miles, they have a mechanical spring in them which wears out. That's almost always the first symptom you hear, but it's not the worst danger.

Inside the engine, at the end of each head(one in front, one in back), the cam chains leading to the center jackshaft, both ride on a plastic cassette. That plastic from the 1997 first SOHC, to the 2001 SOHC, all are a lower quality plastic which will fail eventually. When those wear or break apart, the chain gets way too loose, and the engine is killed. At that point your choice will be a new engine or a rebuilt engine.

Your local dealer likely quoted you the cost to change the external tensioners, which cost about $45 and $25. The front one can take an hour or two to change, the back one is about ten minutes to do. Find any decent mechanic to do those.

The internal chain cassettes are about $60 or so each to buy. The back one rarely fails evidently, so people avoid messing with that unless there is a symptom. It requires pulling the engine or trans out, it's between them.

There are a few parts wise to also replace if you get into the front to do that cassette, maybe $100 total more. The special tool to time the chains is a kit that runs about $150. That's a good sized job for a good mechanic, about five hours at least to R&R the whole front of the engine parts. There are a few things along the way which can slow things down.

It's best to plan to get the front cassette and tensioners done at the first 75k mile mark for pre 2002 SOHC 4.0 Ford engines.
Attached Images
     
__________________

__________________
Don

98 Mountaineer 18's Zexel-Torsen diff, suspension work,12.75" x 1.25" rotors etc., 347 4WD soon.
Be American, Buy American(MANUFACTURER)
CDW6212R is offline   Reply With Quote
Old 08-27-2012, 10:21 AM   #3
CAR48085
Junior Member
 
Join Date: Oct 2011
Posts: 15
Thakks for the "expert" info!!! And the pics. The tensioners gave out on my engine and the engine just stopped....like the key was turned off. I am getting new tensioners and have the timing cover and valve covers off. I can still turn the engine over with a socket and wrench. Since, the timing chain "jumped" is there a way to make sure the timing chain and OHC is in time before trying to start it? My Chiltons only references the 1st cylinder "TDC" with the cam sensor on the damper pulley...is this all that needs to be done to assure timing is correct? Thanks for the help.
__________________
CAR48085 is offline   Reply With Quote
Old 03-10-2013, 10:58 AM   #4
HendershotRacing
Junior Member
 
Join Date: Mar 2013
Posts: 1
I did a '97 4.0 shoc that was out of time. Ford did not put a pin between the cam gear & cam, so the bolt tension holds time (beat that engineer to death.) There r slots on the cam that hold it in place to tighten cam gear in time. The passenger side is the one the valve springs will push the came past the correct spot for TDC on the crank. I drilled a hole in the gear and made my own pin to match a hole inthe end of the cam.
__________________
HendershotRacing is offline   Reply With Quote
Reply

Tags
guides, tensioner, timing chain

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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


Similar Threads
Thread Thread Starter Forum Replies Last Post
99 4.0 SOHC Timing Chain Repairs 99SportX 2nd Generation Explorers | 1995-2001 37 07-27-2013 02:19 PM
Timing chain help. KJ4JOA 2nd Generation Explorers | 1995-2001 5 04-11-2012 04:54 PM
4.0 SOHC Timing Chain Issue Need Help! 4D2Envy 2nd Generation Explorers | 1995-2001 25 04-12-2007 12:39 PM
4.0 SOHC CAM TIMING CHAIN hot rod fozzzie 2nd Generation Explorers | 1995-2001 3 11-24-2006 01:43 AM
timing chain MDPuckett84 Off Topic 5 06-22-2004 07:30 PM

Powered by vBadvanced CMPS v3.2.3

All times are GMT -6. The time now is 06:03 PM.


ExplorerTalk.com is in no way associated with or endorsed by Ford Motor Company.


Content Relevant URLs by vBSEO 3.6.0