XJ XJ8 / XJR ( X308 ) 1997 - 2003

Super V8 Transmission Issue?

Thread Tools
 
Search this Thread
 
Old Dec 20, 2020 | 08:52 PM
  #1  
trailless's Avatar
Thread Starter
|
Junior Member
Joined: Nov 2020
Posts: 25
Likes: 3
From: Atlanta
Default Super V8 Transmission Issue?

So today I was driving home and after a stop, I took a right turn. After taking the right turn, the gas pedal wouldn't do anything. No transmission fault or anything. I tried reverse and the same thing. I press the gas pedal and it wouldn't do anything. I put it in N and P, and when I press the gas pedal it would rev like normal. I turned the car off for about 20 seconds and turned it back on. Shifting into D and it would move but it would make a higher pitched squealing sound. Nothing to crazy but it was noticeable. Then it would just slip out of gear in about 10 - 20 seconds. At this point, the transmission fault error message came on and the check engine light came on. Turning the car off and back on would give me about 10-20 seconds of driving before slipping out of gear again.

I had the car towed to a shop and hopefully will have it looked at tomorrow. In the meantime, do you have any idea what it may be?
 
Reply
Old Dec 20, 2020 | 09:23 PM
  #2  
Highhorse's Avatar
Veteran Member
10 Year Member
Liked
Loved
Community Favorite
Joined: Feb 2013
Posts: 4,935
Likes: 1,928
From: Trying to escape Central Florida
Default

Low fluid and/or dirty filter.
 
Reply
Old Dec 20, 2020 | 09:27 PM
  #3  
Addicted2boost's Avatar
Veteran Member
10 Year Member
Liked
Loved
Community Favorite
Joined: Mar 2015
Posts: 3,125
Likes: 1,279
Default

Early on you said when you went to turn right, the gas pedal didn’t do anything. The engine didn’t rev up(?) or the engine revd up but it didn’t go anywhere? I know you mentioned it revd up in P & N, just trying to get more information. How many miles does the car have? A guess is that the transmission fluid level is low. I acquired my 98’ XJR because the engine mounts were so collapsed and one of the transmission oil cooler lines rubbed through the subframe and leaked a lot of ATF out. When you hear back from the shop, report it back here. These are generally very stout transmissions. Mine went out but it had about 242K miles on it then.
 
Reply
Old Dec 20, 2020 | 09:29 PM
  #4  
trailless's Avatar
Thread Starter
|
Junior Member
Joined: Nov 2020
Posts: 25
Likes: 3
From: Atlanta
Default

Originally Posted by Highhorse
Low fluid and/or dirty filter.
Thanks! I'll make sure that it gets looked at. BTW, do you know where I can find a owners manual for these cars? 2003 XJ Super V8?
 
Reply
Old Dec 20, 2020 | 09:34 PM
  #5  
trailless's Avatar
Thread Starter
|
Junior Member
Joined: Nov 2020
Posts: 25
Likes: 3
From: Atlanta
Default

Originally Posted by Addicted2boost
Early on you said when you went to turn right, the gas pedal didn’t do anything. The engine didn’t rev up(?) or the engine revd up but it didn’t go anywhere? I know you mentioned it revd up in P & N, just trying to get more information. How many miles does the car have? A guess is that the transmission fluid level is low. I acquired my 98’ XJR because the engine mounts were so collapsed and one of the transmission oil cooler lines rubbed through the subframe and leaked a lot of ATF out. When you hear back from the shop, report it back here. These are generally very stout transmissions. Mine went out but it had about 242K miles on it then.
It was after the right hand turn. I honestly don't think the right hand turn had anything to do with it. The engine didn't rev at all. It was like the gas pedal wasn't operational in D or R. But it N and P it would rev like normal. The car has 82k miles. I recently just purchased it so I'm learning all about it now. I'll report back. I'm hoping its just low on fluid.
 
Reply
Old Dec 21, 2020 | 07:50 AM
  #6  
Highhorse's Avatar
Veteran Member
10 Year Member
Liked
Loved
Community Favorite
Joined: Feb 2013
Posts: 4,935
Likes: 1,928
From: Trying to escape Central Florida
Default

Originally Posted by trailless
Thanks! I'll make sure that it gets looked at. BTW, do you know where I can find a owners manual for these cars? 2003 XJ Super V8?
A2B has one....lol. He could be the one to probably answer what I'm about to say (he does have a Super V8), but I believe they are the same ones given to all X308 models. So you could go to a scrap yard and most likely find one in a glove compartment.
 
Reply
Old Dec 21, 2020 | 01:00 PM
  #7  
trailless's Avatar
Thread Starter
|
Junior Member
Joined: Nov 2020
Posts: 25
Likes: 3
From: Atlanta
Default

Originally Posted by Highhorse
A2B has one....lol. He could be the one to probably answer what I'm about to say (he does have a Super V8), but I believe they are the same ones given to all X308 models. So you could go to a scrap yard and most likely find one in a glove compartment.
I was trying to find the dip stick to check the transmission fluid but I couldn't find it before the tow truck came. Do you know if these cars have one or where it's located?
 
Reply
Old Dec 21, 2020 | 01:06 PM
  #8  
Jdthomas's Avatar
Junior Member
Joined: Feb 2015
Posts: 15
Likes: 2
From: San Antonio
Default Hope this starts a new message thread on transmissions

Hi, About 2 weeks ago my 2000XJR started having difficulties shifting from Gear 1 to 2. I kind of just chalked up to a Jag occasionally nuisance. However it is becoming very much more noticeable and more frequent. On my year the transmission is basically sealed (it think it might be a Mercedes tranny, but not sure) and I cannot add transmission fluid. I really like the car and do not want to have to replace the tranny or trade-in the car. Any suggestions on what to do? It is 2000XJR with only 85k miles on it. I can usually shift it manually with the J or pull over and slip into neutral at a full start and then it shifts fine until I turn car off. Then sometimes it acts up. I read a thread about when pressing on the gas, that their car didn't want to start moving. I have experienced that too.

Thanks for your suggestions or any questions.

Darrell
 
Reply
Old Dec 21, 2020 | 01:10 PM
  #9  
xalty's Avatar
Veteran Member
5 Year Member
Liked
Loved
Community Favorite
Joined: Dec 2019
Posts: 3,695
Likes: 1,222
Default

Originally Posted by Jdthomas
Hi, About 2 weeks ago my 2000XJR started having difficulties shifting from Gear 1 to 2. I kind of just chalked up to a Jag occasionally nuisance. However it is becoming very much more noticeable and more frequent. On my year the transmission is basically sealed (it think it might be a Mercedes tranny, but not sure) and I cannot add transmission fluid. I really like the car and do not want to have to replace the tranny or trade-in the car. Any suggestions on what to do? It is 2000XJR with only 85k miles on it. I can usually shift it manually with the J or pull over and slip into neutral at a full start and then it shifts fine until I turn car off. Then sometimes it acts up. I read a thread about when pressing on the gas, that their car didn't want to start moving. I have experienced that too.

Thanks for your suggestions or any questions.

Darrell
Tranny is not sealed for life in any way shape or form. You have a drain plug and a dipstick hole, just get the dipstick for it

it might be leaking 13 pin connector o-rings causing your issues
 
Reply
Old Dec 21, 2020 | 03:22 PM
  #10  
Highhorse's Avatar
Veteran Member
10 Year Member
Liked
Loved
Community Favorite
Joined: Feb 2013
Posts: 4,935
Likes: 1,928
From: Trying to escape Central Florida
Default

So you have the SC V8, which means you have the 722.6 trans. You don't have a dip stick per say, you have a red tab capped tube where you have to purchase a separate spring dip stick.

This should help, I fail to understand why the combo kits are way more expensive than buying separately?

https://www.ebay.com/sch/i.html?_fro...stick&_sacat=0

https://www.ebay.com/sch/i.html?_fro...722.6+dipstick

...and finally a get to the point video of checking it...

 
Reply
Old Dec 21, 2020 | 08:50 PM
  #11  
M. Stojanovic's Avatar
Veteran Member
Joined: May 2017
Posts: 1,699
Likes: 897
Default

Dipstick tube (capped):




 
Reply
Old Dec 22, 2020 | 09:28 AM
  #12  
trailless's Avatar
Thread Starter
|
Junior Member
Joined: Nov 2020
Posts: 25
Likes: 3
From: Atlanta
Default

Ok, so I just heard back from the shop. They said the error code is reading incorrect gear ratio. They're saying that it needs a transmission... has anyone else dealt with this? It seems like its so early for it to go out seeing as it only has 82k miles.

Edit: Debating on whether or not to just cut my losses...
 

Last edited by trailless; Dec 22, 2020 at 09:39 AM.
Reply
Old Dec 22, 2020 | 10:05 AM
  #13  
trailless's Avatar
Thread Starter
|
Junior Member
Joined: Nov 2020
Posts: 25
Likes: 3
From: Atlanta
Default

The mechanic also said the fluid was gross but it was full of fluid.
 
Reply
Old Dec 22, 2020 | 10:32 AM
  #14  
xalty's Avatar
Veteran Member
5 Year Member
Liked
Loved
Community Favorite
Joined: Dec 2019
Posts: 3,695
Likes: 1,222
Default

doesn’t sound good and definitely not normal for a 722.6 to just quit especially the ones made after 2000. ask your mechanic if the red tamper tab on the dipstick cap was still there

either way i’d say fix it, if you can get your car onto bring a trailer it should get 5 digits no problem.
 

Last edited by xalty; Dec 22, 2020 at 10:37 AM.
Reply
Old Dec 22, 2020 | 10:43 AM
  #15  
trailless's Avatar
Thread Starter
|
Junior Member
Joined: Nov 2020
Posts: 25
Likes: 3
From: Atlanta
Default

Originally Posted by xalty
doesn’t sound good and definitely not normal for a 722.6 to just quit especially the ones made after 2000. ask your mechanic if the red tamper tab on the dipstick cap was still there

either way i’d say fix it, if you can get your car onto bring a trailer it should get 5 digits no problem.
Yeah, I was hoping that this transmission would last a bit longer. I have a wrangler with the same transmission and it's taken a lot of abuse offroad and still going...

This car was actually on BAT a couple years ago. It was also on cars & bids recently, where I purchased it.
 
Reply
Old Dec 22, 2020 | 10:44 AM
  #16  
trailless's Avatar
Thread Starter
|
Junior Member
Joined: Nov 2020
Posts: 25
Likes: 3
From: Atlanta
Default

Originally Posted by xalty
doesn’t sound good and definitely not normal for a 722.6 to just quit especially the ones made after 2000. ask your mechanic if the red tamper tab on the dipstick cap was still there

either way i’d say fix it, if you can get your car onto bring a trailer it should get 5 digits no problem.
Mechanic said that he could source a used transmission and have it replaced for $1900. Do you think that's a decent deal?
 
Reply
Old Dec 22, 2020 | 10:58 AM
  #17  
xalty's Avatar
Veteran Member
5 Year Member
Liked
Loved
Community Favorite
Joined: Dec 2019
Posts: 3,695
Likes: 1,222
Default

Originally Posted by trailless
Mechanic said that he could source a used transmission and have it replaced for $1900. Do you think that's a decent deal?
wow never saw that auction you stole that thing lol 😂 my 99 probably would’ve done even worse if i decided to sell it on there

$1900 isn’t too bad for all the labor involved
 
Reply
Old Dec 22, 2020 | 02:54 PM
  #18  
Highhorse's Avatar
Veteran Member
10 Year Member
Liked
Loved
Community Favorite
Joined: Feb 2013
Posts: 4,935
Likes: 1,928
From: Trying to escape Central Florida
Default

Originally Posted by trailless
The mechanic also said the fluid was gross but it was full of fluid.
Well, it can be full of fluid, but if it can't get past the filter for the pump to push it, its worthless.

What code did he pull, its kind of important?

Here's a site you can get a list of trans in your area for price reference. https://www.car-part.com/ I'm pretty sure you'll just have to prompt the Search for the Atlanta zip.

Remember, these are recycle yards, the listed price isn't always the accepting price. If you need to go with another, I'd have someone go through it first. No sense paying the kind of money only to have that one keel over because of something that should of been taken care of beforehand.
 
Reply
Old Dec 22, 2020 | 03:02 PM
  #19  
trailless's Avatar
Thread Starter
|
Junior Member
Joined: Nov 2020
Posts: 25
Likes: 3
From: Atlanta
Default

Originally Posted by Highhorse
Well, it can be full of fluid, but if it can't get past the filter for the pump to push it, its worthless.

What code did he pull, its kind of important?

Here's a site you can get a list of trans in your area for price reference. https://www.car-part.com/ I'm pretty sure you'll just have to prompt the Search for the Atlanta zip.

Remember, these are recycle yards, the listed price isn't always the accepting price. If you need to go with another, I'd have someone go through it first. No sense paying the kind of money only to have that one keel over because of something that should of been taken care of beforehand.
I'll give him a call and ask for the specific code it pulled. It was so weird though. It was just so sudden. No warning signs or anything...
 
Reply
Old Dec 22, 2020 | 06:32 PM
  #20  
Highhorse's Avatar
Veteran Member
10 Year Member
Liked
Loved
Community Favorite
Joined: Feb 2013
Posts: 4,935
Likes: 1,928
From: Trying to escape Central Florida
Default

Well, you have to keep in mind, your in a luxury car of its era (20ish yrs old or not) and the sounds you'd normally hear in a lesser vehicle, you won't hear with this one. But this trans is, as stated previously by Addicted, is generally quite stout. That is why the code is important.

If this was a ZF5, in a standard XJ8, we'd have a real good idea what that problem was.
 
Reply



All times are GMT -5. The time now is 11:35 PM.