XJ XJ8 / XJR ( X308 ) 1997 - 2003

just a few questions from someone new to the jaguar scene...

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  #2  
Old 08-26-2009, 10:38 AM
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The "S" is the sports mode, which will give you a higher stall speed. The "gauge" is a speedometer. That is the speed control switch.
 
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Old 08-26-2009, 11:11 AM
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Originally Posted by ken@britishparts.com
The "S" is the sports mode, which will give you a higher stall speed. The "gauge" is a speedometer. That is the speed control switch.
I thought the 'S' button was to take the transmission out of 'comfort' mode? For example, letting the car actually utilize first gear? Some Mercedes tech told me that...
 
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Old 08-26-2009, 01:57 PM
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Sport changes RPM shift points, period. Message me if you would like to buy literature for your car.
 
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Old 08-26-2009, 02:44 PM
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I believe S, sport mode, does give you first gear atleast it feels like it but i know for sure that it rides the gears out longer (instead of shifting at 3 or 4 k it will go to redline when WOT, make sure to press all the way down there is a physical button mechanism that will allow kickdown to engage). Take traction off for even more performance especially in the R, it tends to slip at every speed if traction control is off on-ramps, off-ramps, passing, uturns... Traction on can make the car stumble at times i think it retards the timing not sure tho.
 

Last edited by hrand1987; 08-26-2009 at 02:46 PM.
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Old 08-26-2009, 05:48 PM
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Sport setting does indeed shift points. It does not change the stall speed. The MBZ tranny in the XJR does not have electronically controlled torque convertor where you can adjust stall speeds. The "comfort" setting does launch the car in 2nd gear under partial throttle starts. The sport setting will always launch the car in 1st gear. IMO the sport setiing should be normal and the other be called economy.
 
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Old 08-26-2009, 05:59 PM
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Thanks Waz, on the case again.

There was a discussion on another forum once started by a guy who felt he wasn't getting good-off-the line power. People started asking him if he was starting out in second. You can't do that unless your TCM or your transmission is broken, the car always starts off in first.
 
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Old 08-26-2009, 09:09 PM
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So which is it??? Does the car start in second with the 'S' not engaged? 1st gear if it is?
 
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Old 08-26-2009, 09:36 PM
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Buy a 1994 Jaguar XJ6, fitted from the factory with a ZF 4HP24 transmission and a selector switch that cancels first gear via the TCM, and you can start out in second gear all day long. Otherwise, you're starting out in first. Unless of course your transmission is baked, P1722 is flagged because normal stall speed is exceeded, and then you get to take off in fourth.

When did counting to five get so difficult...then pressing a button, and counting to five again?
 
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Old 08-27-2009, 07:35 AM
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I wondered where that starting in second gear story came from. Mosts myths have some root in a misread fact.
 
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Old 08-27-2009, 12:05 PM
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I guess that means you don't want to buy the owner's literature then.
 
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Old 08-29-2009, 06:24 PM
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I believe the valet button allows the valet to park the car without giving him access to the boot.
 
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Old 08-29-2009, 06:28 PM
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Or let him out of it?
 
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Old 09-28-2009, 06:35 PM
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Originally Posted by wazari
The MBZ tranny in the XJR ....
Am I missing something? I thought the XJRs got the same 5 speed ZF transmission the XJ8s got?
 
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Old 09-28-2009, 08:14 PM
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Yes Alex, you missed something. The XJR has a Mercedes Benz badged gearbox.
 
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Old 09-29-2009, 08:42 AM
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Is the XJR's transmission any more reliable than the ZF?
 
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Old 09-29-2009, 10:29 AM
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What's difficult about unlocking the doors ? All the doors on my car lock automatically when I put it in "Drive". When I stop and open my door, all the doors unlock automatically. If someone wants to get out and I'm not getting out, I hit the door lock button in the center console next to the valet button. Of course, from outside the car, I hit the remote fob unlock button once for me, or hit it twice to unlock all the doors.
 
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Old 09-29-2009, 07:31 PM
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Alex:
There are reported failures of the ZF transmission. By some folks reports, I believe there are some early failures on some ZF gearboxes. My MY'02 NA XJ8 has 160k on it's original. My MY'98 XJR has 215 on its original. My MY '99 XJR reportedly had a new box at 55 k miles, but still pulls fine at 165,000 miles. So, not every case has low mileage failures. Andyes, I run the Pi$$ out of all of mine.
 
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