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Jaguar XJ Transmission Questions

64 messages,  Last post on Nov 26, 2009 at 7:24 AM

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#55 of 64 Re: jagowner [jagowner] by waits Sep 19, 2009 (9:55 am)
Replying to: jagowner (Sep 19, 2009 9:11 am) My 2000 XJ8 shifts when going up a hill. But usually the case is that it shifts down. And we have some mothers here in S.F.(hills) My transmission lasted till 72,000. I also needed to have my shifter assembly changed, as it started to get a loose grab..(noticed at the same time) I was bummed about doing it, since I bought the car used and it went out after one year...but then I realized I paid 9000 for the car with 63,000 miles on it, and if I (try to sell a car with a bad tranny) sold it and got another used car...I had no guarantee on it's transmission. So, I bit, and one forgets, that as soon as the money is spent...you really don't think about it, and now I have a brand new transmission, with a guarantee...and I'm driving a gorgeous titanium jag with a black interior. Now I use the auto speed thing when I get on the freeway, set it and forget it....saves tickets, my unusually sensitive foot, saves gas. Great habit to get into. When I go on a big rise on the freeway, though I notice that it's more efficient for me to get out of auto speed, (or whatever it's called) as the tach shows too high revs on the hill climb, but drops down to 2 or less when I go back to using my foot on the gas. At 100,000 miles one is supposed to change plugs on a 2000, and when they change them, they are supposed to look at the chains. By the way, when a 2000 XJ8 trans. starts to go, it moves into a special zone...I believe it's the third gear called something like limp home mode. The trans light will come on, or probably just the check engine light. Good luck...I say, change your transmission...or get a 2000. Replies to this message: jagowner (Sep 20, 2009 12:01 pm) waits (Sep 20, 2009 5:55 pm)
#56 of 64 Re: jagowner [waits] by jagowner Sep 20, 2009 (12:01 pm)
Replying to: waits (Sep 19, 2009 9:55 am) Thanks for the information - maybe I should upgrade to a newer model. Except had the whole front end redone for lots of money, and so I am indebted to the car. Plus we like it. My problem is the oposite of what you described - it does not shift going up hill, but it never did that anyhow. My bigger concern is the delayed shifting - it sometimes holds a gear before shifting, and if you take your foot off the gas to get it to shift, it just slows down, but does not shift. However, it does not happen all the time.   So my question is - does clearing the codes really help, and does this type of shifting problem mean the transmission is going? Replies to this message: waits (Sep 20, 2009 5:55 pm)
#57 of 64 Re: delayed or late shifting on your jag by waits Sep 20, 2009 (5:55 pm)
Replying to: jagowner (Sep 20, 2009 12:01 pm) I think it's either the shifting mechanism or the transmission or both. At your mileage, it's to be expected. You should only be using a jag mechanic.
#58 of 64 Re: Looking for a great Jaguar mechanic/tech [OME_OMY] by digit_girl Sep 28, 2009 (8:23 am)
Replying to: OME_OMY (Dec 11, 2008 12:25 pm) Hi, Digital girl here, did you find a good jaguar mechanic? I am looking for one myself. Have 1994 xjs-6. Help would be greatly appreciated.
#59 of 64 Re: XJ Transmissions: Any Problems? [Mr_Shiftright] by jagernut Oct 12, 2009 (5:02 pm)
Replying to: Mr_Shiftright (Nov 05, 2006 1:25 pm) MY 98 xj8 does not shift into 4 or 5th ( higher than 3rd). In drive, it runs through 1St 2 nd and 3rd, then at 2200 rps it disengages and the trans fault lights up. If I start on the other side of the j gate in 3rd its stays engaged. 4th is the same as drive. The ASC light has been on since way before this problem started.   Im so close!! Anybody out there that can help? Thank You. Replies to this message: waits (Oct 12, 2009 7:59 pm)
#60 of 64 Re: XJ Transmissions: Any Problems? [jagernut] by waits Oct 12, 2009 (7:59 pm)
Replying to: jagernut (Oct 12, 2009 5:02 pm) Jeez Chriiiis...take the car in before you hurt somebody. In regards to the ASC light...some guy on the web replaced his throttle body and the light never came on again. I have no idea what a throttle body is, but I do know that British Motors wants about two grand to replace the computer for the ASC. I have the same problem..light comes on when it feels like it. ALways fun to drive a beta car, isn't it? andre in S.F
#61 of 64 XJ8 transmission and shifter not in sync by dmwill Nov 23, 2009 (11:41 pm)
I have a 2004 XJ8. When shifting from Drive to Park (brake pedal depressed), the shifter moved into park but the transmission went to reverse. The shift lever will not move out of park, but the car would drive backwards with the break released. Shut the car off, now it won't start. The shifter stays in Park, but the car will roll when the brake is off. With the ignition on, the shift indicator shows reverse and the back-up lights are on. Roadside assistance suggested letting it sit for 20 minutes to see if it would reset, didn't work. I hate taking anything to the shop. Any suggestions? Replies to this message: jagernut (Nov 24, 2009 6:38 am) dmwill (Nov 25, 2009 11:44 pm) jagernut (Nov 26, 2009 7:24 am)
#62 of 64 Re: XJ8 transmission and shifter not in sync [dmwill] by jagernut Nov 24, 2009 (6:38 am)
Replying to: dmwill (Nov 23, 2009 11:41 pm) Sounds like your mechanical linkage is loose. Try this: on the gear indicator for the j gate there is a plug with a star indent on it up by park. unscrew that plug, below it is a latch that keeps the car in park-or the shift lever in park. get a skinney driver put it down that hole and push down to release the park lock. Move the shifter to neutral and start the car. If you need to move it do it now, using 4th or 3rd. on the j gate.   when you get some where safe, take the shift indicator off. facing first, then shift indicator. You will need to put the car in neutral with the emergency brake one. to get these parts off but its simple to do-take your time. Get a strong light, look on the passanger side of the center counsole for the actual shifter cable: is it intact? firmly in place? You could shift into what would be park to see what happens. I'll guess that you have a broken neutral or rotary switch. Both are easy to replace. Let me know. Replies to this message: dmwill (Nov 25, 2009 11:44 pm) jagernut (Nov 26, 2009 7:24 am)
#63 of 64 Re: XJ8 transmission and shifter not in sync [jagernut] by dmwill Nov 25, 2009 (11:44 pm)
Replying to: jagernut (Nov 24, 2009 6:38 am) Thanks. I finally found some time to work on the problem, and you were right about the mechanical linkage being loose. I was able to get the console apart far enough to check the cable, and it looked fine. I then got under the car to look at the other end of the cable and found that one of the 2 bolts holding the cable bracket to the transmission was missing, and the other was loose. A new 8mm bolt and a few drops of locktight and I am back in business. Thanks again. Replies to this message: jagernut (Nov 26, 2009 7:24 am)
#64 of 64 Re: XJ8 transmission and shifter not in sync [dmwill] by jagernut Nov 26, 2009 (7:24 am)
Replying to: dmwill (Nov 25, 2009 11:44 pm) Good for you! How much would that have cost at a dealer? $2K minimum. Congratulations

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