"Sport" Switch
#1
"Sport" Switch
Reading in the owners manual the function of the "Sport" mode, to extend the range of the transmission to make full use of the engine's reserves?
I gather that this only pushes the rev limits of each shift point, or has anyone got a better explanation of this switch. Also, has anyone done a a mpg determination of the use of this switch? or is this a case of," if you have to ask, you do not need to ask?"
I gather that this only pushes the rev limits of each shift point, or has anyone got a better explanation of this switch. Also, has anyone done a a mpg determination of the use of this switch? or is this a case of," if you have to ask, you do not need to ask?"
#2
#3
The following users liked this post:
Johnken (02-26-2019)
#4
#5
Sam, I've always found mileage to be better with Sport turned on. I once posted a query about this same topic a while back and was surprised how many of us found the same thing.
Maybe it has to do with the length of time it is turned on. My sport switch is enabled 99% of the time. It's just the times my dog steps on it (turning it off), or there occasions that I want to feel it winding out in a higher gear at full throttle that I turn it off.
Ttytt turning it off often it falls into the "just creates stress" category. I know in the back of my mind when and where downshifts should occur. When sport is off the shift points change . God knows I've read about these trannys dying at high miles and I catch myself thinking "uh oh what's wrong- is the tranny ok?" before I recall that sport is off. Shes not supposed to shift or downshift there (whew).
John
Maybe it has to do with the length of time it is turned on. My sport switch is enabled 99% of the time. It's just the times my dog steps on it (turning it off), or there occasions that I want to feel it winding out in a higher gear at full throttle that I turn it off.
Ttytt turning it off often it falls into the "just creates stress" category. I know in the back of my mind when and where downshifts should occur. When sport is off the shift points change . God knows I've read about these trannys dying at high miles and I catch myself thinking "uh oh what's wrong- is the tranny ok?" before I recall that sport is off. Shes not supposed to shift or downshift there (whew).
John
#6
Sam, I've always found mileage to be better with Sport turned on. I once posted a query about this same topic a while back and was surprised how many of us found the same thing.
Maybe it has to do with the length of time it is turned on. My sport switch is enabled 99% of the time. It's just the times my dog steps on it (turning it off), or there occasions that I want to feel it winding out in a higher gear at full throttle that I turn it off.
Ttytt turning it off often it falls into the "just creates stress" category. I know in the back of my mind when and where downshifts should occur. When sport is off the shift points change . God knows I've read about these trannys dying at high miles and I catch myself thinking "uh oh what's wrong- is the tranny ok?" before I recall that sport is off. Shes not supposed to shift or downshift there (whew).
John
Maybe it has to do with the length of time it is turned on. My sport switch is enabled 99% of the time. It's just the times my dog steps on it (turning it off), or there occasions that I want to feel it winding out in a higher gear at full throttle that I turn it off.
Ttytt turning it off often it falls into the "just creates stress" category. I know in the back of my mind when and where downshifts should occur. When sport is off the shift points change . God knows I've read about these trannys dying at high miles and I catch myself thinking "uh oh what's wrong- is the tranny ok?" before I recall that sport is off. Shes not supposed to shift or downshift there (whew).
John
The following users liked this post:
Johnken (02-26-2019)
#7
Join Date: Jan 2018
Location: on the road in NE Oklahoma
Posts: 2,838
Received 1,686 Likes
on
1,001 Posts
if 60 is your minimum speed, what is the maximum speed when getting 28 mpg ? I'm not seeing anywhere close to that on my '02 XKR even when I'm stuck with interstate travel at a steady 80 mph set on the cruise control.. Stock 4,0 s/c.
Z
Trending Topics
#8
Fellas
I'm super impressed with RJ237's 06 XK8's 28mpg! Wow! I presume that's with a 4.2L. For my 1999 XK8 4.0L na I get 16 to 17mpg in normal mode. In sports mode, this drops to 14mpg. This obviously is from the trip computer, but tallies up with the odometer & fuel I put in the car.
BTW Fuel is cheap in Bahrain so I don't mind. With a 4L engine, fuel efficiency shouldn't be what you're looking for in the car.
I'm super impressed with RJ237's 06 XK8's 28mpg! Wow! I presume that's with a 4.2L. For my 1999 XK8 4.0L na I get 16 to 17mpg in normal mode. In sports mode, this drops to 14mpg. This obviously is from the trip computer, but tallies up with the odometer & fuel I put in the car.
BTW Fuel is cheap in Bahrain so I don't mind. With a 4L engine, fuel efficiency shouldn't be what you're looking for in the car.
#9
#11
Join Date: Jan 2018
Location: on the road in NE Oklahoma
Posts: 2,838
Received 1,686 Likes
on
1,001 Posts
Now when you (understandably) step on the go-go pedal, well, just don't examine the mpg too closely. Whenever I've had the sport mode on for some exercise, I generally zero out the mpg /odometer/ . That way I'm not confronted with the cost of my good times.....
When I'm in town, I never use the sport mode, theres just no satisfaction in driving in traffic when the engine is rarin' to go, but can't. That just adds to the satisfaction when a twisty 2 lane & deserted road is on the horizon.
Z
#12
Most of you verified what I suspected, that the 'Sport' switch just extends the shift points on the tranny for the XK8. On my F-Type, the "Dynamic Mode" does quite a bite more(shocks, shift pints, exhaust cutout). I would expect reduced mileage, especially around town driving.
I am still trying to find the steps to reset the Avg.accumulated Mpg. I am getting it displayed, and accumulated, but cannot get it cleared/reset. Maybe it is just me, but it seems the that the owner's manual is not the most explicit. Seems to leave a lot to the imagination.
I am still trying to find the steps to reset the Avg.accumulated Mpg. I am getting it displayed, and accumulated, but cannot get it cleared/reset. Maybe it is just me, but it seems the that the owner's manual is not the most explicit. Seems to leave a lot to the imagination.
The following users liked this post:
Johnken (02-28-2019)
#13
Join Date: Sep 2008
Location: Damon /Houston, Texas
Posts: 7,254
Received 2,193 Likes
on
1,359 Posts
it may be counter-intuitive, but many supercharged cars are getting better gas mileage when the rpm is kept low, as it will be w/ highway cruising while in cruise control mode. Low rpm forced induction actually improves engine efficiency. Even my shelby''s w/ vintage paxton ball drive superchargers would break 20 mpg @ 80+ mph with a 1:1 top gear (4 speed). Whereas they they wouldn't get that mpg before the supercharger was put on.
Now when you (understandably) step on the go-go pedal, well, just don't examine the mpg too closely. Whenever i've had the sport mode on for some exercise, i generally zero out the mpg /odometer/ . That way i'm not confronted with the cost of my good times.....
Were you sensing that the transmission never shifted into high gear, as has been reported is the case ? No high gear going to be the mpg killer.
When i'm in town, i never use the sport mode, theres just no satisfaction in driving in traffic when the engine is rarin' to go, but can't. That just adds to the satisfaction when a twisty 2 lane & deserted road is on the horizon.
Z
Now when you (understandably) step on the go-go pedal, well, just don't examine the mpg too closely. Whenever i've had the sport mode on for some exercise, i generally zero out the mpg /odometer/ . That way i'm not confronted with the cost of my good times.....
Were you sensing that the transmission never shifted into high gear, as has been reported is the case ? No high gear going to be the mpg killer.
When i'm in town, i never use the sport mode, theres just no satisfaction in driving in traffic when the engine is rarin' to go, but can't. That just adds to the satisfaction when a twisty 2 lane & deserted road is on the horizon.
Z
As for the sport switch i always leave mine on because of the biggest benefit. "passing" when you punch it to pass. It drops down 2 gears not just one giving much better acceleration
#14
the supercharger is bypassed when not in boost. Either with vacuum or with electric solenoid for the newer 5.0 and 3.0.
As for the sport switch i always leave mine on because of the biggest benefit. "passing" when you punch it to pass. It drops down 2 gears not just one giving much better acceleration
As for the sport switch i always leave mine on because of the biggest benefit. "passing" when you punch it to pass. It drops down 2 gears not just one giving much better acceleration
#15
Join Date: Sep 2008
Location: Damon /Houston, Texas
Posts: 7,254
Received 2,193 Likes
on
1,359 Posts
#16
VVT retards the cam timing
Gents,
We all love the sports mode albeit maybe not the resulting mpg drop in fuel economy/efficiency. FYI just let you know how the VVT works.
The VVT solenoid fires to allow oil pressure into a VVT body connected to the camshaft, retarding the revs, thus opening up the valves a bit longer. See pic below
a common problem is old oil blocking the solenoid or the solenoid doesn’t switch (it should have audible click on)
We all love the sports mode albeit maybe not the resulting mpg drop in fuel economy/efficiency. FYI just let you know how the VVT works.
The VVT solenoid fires to allow oil pressure into a VVT body connected to the camshaft, retarding the revs, thus opening up the valves a bit longer. See pic below
a common problem is old oil blocking the solenoid or the solenoid doesn’t switch (it should have audible click on)
#18
Join Date: Apr 2018
Location: Hampton Roads, eastern Virginia
Posts: 243
Received 89 Likes
on
52 Posts
I am still trying to find the steps to reset the Avg.accumulated Mpg. I am getting it displayed, and accumulated, but cannot get it cleared/reset. Maybe it is just me, but it seems the that the owner's manual is not the most explicit. Seems to leave a lot to the imagination.
You have to have one of the trip counters displayed while doing it, so the display needs to start with A: or B:. That is to say, you can't do the reset while looking at something like inst. MPG.
#19
It should be reset by holding down the 000 button in the group of buttons that control the trip counters, up on the dash. Hold it for five to ten seconds.
You have to have one of the trip counters displayed while doing it, so the display needs to start with A: or B:. That is to say, you can't do the reset while looking at something like inst. MPG.
You have to have one of the trip counters displayed while doing it, so the display needs to start with A: or B:. That is to say, you can't do the reset while looking at something like inst. MPG.
Thread
Thread Starter
Forum
Replies
Last Post
Newjag
XK8 / XKR ( X100 )
9
02-04-2019 12:10 AM
JimC64
Jaguar Forums Feedback & Suggestion Center
0
02-12-2012 06:05 PM
45Wheelgun
XJ XJ6 / XJ8 / XJR ( X350 & X358 )
6
10-05-2011 03:44 PM
afonda
X-Type ( X400 )
19
03-08-2011 01:48 AM
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)