84 CJ7 i6 258 ..first transmission issues.. Need HELP - JeepForum.com
Search  
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back JeepForum.com > Models > Jeep CJ Forum > 84 CJ7 i6 258 ..first transmission issues.. Need HELP

FS: Wranger BRIGHT License Plate LED! Just $3! Great valueIntroducing MONSTALINER™ UV Permanent DIY Roll On Bed LineG2 Disc Brake Conversion Kit for Jeep Wrangler YJ TJ LJ Ch

Reply
Unread 10-14-2013, 03:32 PM   #1
rickscj7boom
Registered User
1984 CJ7 
 
Join Date: Apr 2011
Location: imperial, ca.
Posts: 182
84 CJ7 i6 258 ..first transmission issues.. Need HELP

Hello Fellow Jeepers... My issue is while driving in 5th gear down the road I heard a clanking noise that what felt was coming from right under the gear shifter, as I pulled over and down shifted it did the same noise with all the gears except 4th gear.. after costing it to a stop I got under the jeep to take a look. I known that the TC has a lil leak that I haven't fixed, but I wasn't aware that the tranny also had a leak and it ran out of fluid is my guess.. I sent my buddy In his jeep to get me some trans oil, shell station only had 2 quarts and the tranny took them both without over spill, I made it home but now need help in where to start looking to fix this or what could of broken.. after I put oil it still clanked in every gear other than 4th gear..

I will get under the jeep tonight and see what kind of tranny I have and take some pics

rickscj7boom is offline   Reply With Quote
Unread 10-14-2013, 05:58 PM   #2
LumpyGrits
Registered User
1985 CJ7 
 
Join Date: Jul 2010
Location: The Mojave Desert Palmdale Ca. U.S.A.
Posts: 4,847
Sounds like you 'smoked' the tranny for sure and it's rebuild/replace time.
You better ck both diffs to see if they are low.
Got to learn about preventive maintenance.
FYI, don't use std 85w-90 gear oil. The T5 was never spec'd for that lubricant. You want 75W-80 syn. gear oil.
A bottle of Lucas power steering stop leak works well in either the tranny or t'case.
LG
__________________
Have'n you along, is like loose'n 2 good men
LumpyGrits is offline   Reply With Quote
Unread 10-15-2013, 11:09 PM   #3
rickscj7boom
Registered User
1984 CJ7 
 
Join Date: Apr 2011
Location: imperial, ca.
Posts: 182
Thanks for the info lumpygrits, so today I called a used jeep parts in San Diego and they guy on the phone said that around $550 - $600 plus tranny trade would get me a "used good" tranny. With 3 months warranty on it. My question to you sir does that sound like a ok deal or should I look elsewhere .. I do have the Mexico border 30 min away and could always cross over and take my tranny for them to rebuild, I'm currently working on getting a price on that option.. Thanks

Rick
rickscj7boom is offline   Reply With Quote
Unread 10-15-2013, 11:25 PM   #4
LumpyGrits
Registered User
1985 CJ7 
 
Join Date: Jul 2010
Location: The Mojave Desert Palmdale Ca. U.S.A.
Posts: 4,847
$500-$600 for a 'box' you have no clue about it's history, is not how I would go.
Why don't you just get yours rebuilt?
LG
__________________
Have'n you along, is like loose'n 2 good men
LumpyGrits is offline   Reply With Quote
Unread 10-16-2013, 03:27 AM   #5
BagusJeep
Web Wheeler
 
BagusJeep's Avatar
1981 CJ7 
 
Join Date: Jul 2009
Location: Bali, Indonesia
Posts: 4,412
SOunds like you have a T5 problem, so this is your opportunity to either rebuild that old box or upgrade.

The 650 for a used box is steep, it is only a T5 light car transmission.

Do you need 5th gear? If not there are stronger and shorter 4 speeds out there, such as the medium duty T176. You will need the box, driveshafts and boots and will have the simple fab of the transmisison tunnel cover. With buying the secondhand parts and rebuild you coul dbe looking at 600 but the end result will be a reliable box that will take some abuse.
__________________
BagusJeep lives in Bali, the Land of Temples.
With a Jeep every prayer counts.

1981 CJ7 258ci - Bagusjeep
1984 CJ7 258ci - Puthijeep
1981 J20 258ci - Gladys
1995 Cherokee 4.0 - CHEROKEE
BagusJeep is online now   Reply With Quote
Unread 10-16-2013, 04:23 AM   #6
CJ7nvrstk
Registered User
1985 CJ7 
 
Join Date: May 2011
Location: Prosper, Tx
Posts: 695
As previously stated, you have a T5 problem. Weak tranny. If it were me, I would replace it with something better. Yesterday I saw a T176/D300 combo for sale for $300. Will post up the link if I can find it again. Personally, I wouldn't waste any time or money on another T5 just to have it crap out on me again. That's why I'm now running a T18.
__________________
4" shoe sucking mud, uphill, 2wd, no slippage on Cooper AT3? Ya, sure! NOT!
CJ7nvrstk is offline   Reply With Quote
Unread 10-16-2013, 06:06 AM   #7
keith460
Jeep. There's Only One
 
keith460's Avatar
1984 CJ7 
 
Join Date: Jan 2007
Location: Doylestown, PA
Posts: 4,847
For the T5 trans, you may get lucky and only need to replace a failed bearing and maybe the shaft it rides on. Rebuild kits cost around $200 but you wont know what you need until you pull it.

Your profile only shows the 258 engine and 35" tires. If your CJ has the standard 2.73 gears, 35" tires and the T5 trans, that combo will never get you far no matter how many times you rebuild or replace that transmission. It is entirely to much stress for that light duty transmission is capable of taking. Invest in some 4.56 or 4.88 gears if you want to keep the T5 for its overdrive.
__________________
.
1984 CJ-7 Renegade
__________________

Restoration Thread:http://www.jeepsunlimited.com/forums...d.php?t=434226
keith460 is offline   Reply With Quote
Unread 10-17-2013, 11:50 AM   #8
CJ7nvrstk
Registered User
1985 CJ7 
 
Join Date: May 2011
Location: Prosper, Tx
Posts: 695
T176/D300 combo

http://www.hardlinecrawlers.com/foru...?topic=28450.0
__________________
4" shoe sucking mud, uphill, 2wd, no slippage on Cooper AT3? Ya, sure! NOT!
CJ7nvrstk is offline   Reply With Quote
Unread 10-17-2013, 05:21 PM   #9
rickscj7boom
Registered User
1984 CJ7 
 
Join Date: Apr 2011
Location: imperial, ca.
Posts: 182
thanks guys for the info/links, I think I will take the tranny out and learn how to rebuild it on my own time... and also keep an eye out for a used tranny around town.. I also found this link here on the forum with the factory manualsl, I printed out the P. T-4 & T-5 transmission overhaul , would that be the correct guide to follow for my t5?
rickscj7boom is offline   Reply With Quote
Unread 10-17-2013, 08:58 PM   #10
PERK
Senior Member
1983 CJ7 
 
Join Date: May 2007
Location: Castro Valley Ca
Posts: 615
there's 2 T-5s for sale on craigslist up here in the bay area for way less than that price
PERK is online now   Reply With Quote
Unread 10-18-2013, 04:06 PM   #11
rickscj7boom
Registered User
1984 CJ7 
 
Join Date: Apr 2011
Location: imperial, ca.
Posts: 182
Hey guys, will a Borg Warner T5 Transmission out of a 1985 Jeep CJ-7 fit my jeep.. swap out?
rickscj7boom is offline   Reply With Quote
Unread 10-18-2013, 04:59 PM   #12
shadoow
Registered User
1985 CJ7 
 
Join Date: Nov 2006
Location: Granbury, Texas
Posts: 467
Quote:
Originally Posted by keith460 View Post

Your profile only shows the 258 engine and 35" tires. If your CJ has the standard 2.73 gears, 35" tires and the T5 trans, that combo will never get you far no matter how many times you rebuild or replace that transmission. It is entirely to much stress for that light duty transmission is capable of taking. Invest in some 4.56 or 4.88 gears if you want to keep the T5 for its overdrive.
This is good info and worth thinking about. You're kinda between a rock & hard place with your setup so you need to make a plan on how to get your jeep set up better; either upgrade your trans to a T176 (which will require other changes like driveshaft lengths, bell housing modification or change out, different tunnel cover, etc) or change out your wheels and tires or re-gear as mentioned above. If all you do is replace/fix the T5 you'll likely be in the same predicament down the road.

as far as the BW T5 bolting up to your bellhousing the answer is yes it will. All the T4 and T5 transmissions were made by BW including the one that's in your jeep and broke. Here's a link to jeep transmission info:

http://www.novak-adapt.com/knowledge...on_gateway.htm
shadoow is offline   Reply With Quote
Unread 10-18-2013, 06:00 PM   #13
rickscj7boom
Registered User
1984 CJ7 
 
Join Date: Apr 2011
Location: imperial, ca.
Posts: 182
thanks! Great info..
rickscj7boom is offline   Reply With Quote




Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. JeepForum.com is not in any way associated with Jeep or the Chrysler Corp.