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Apparently the throttle body on my wife's 2004 is failing. There is also a throttle position error code as well. Is the throttle positions sensor part of the throttle body, or is it a separate part?
The tps (throttle position sensor) is part of the throttle body and it needs no programming. That means that you can take your bad throttle body and simply replace it (30 minutes by yourself) with a good unit. It's a really easy swap. I've had to take my throttle body off many times.
If it were me doing the repair I would buy a used part, because it's so cheap and it's such an easy part to get at. If you want a new one, they will destroy you on the price unless you buy one of these (just make sure it fits!!!!) 4x43 9F991 AA Throttle Body for Select Jaguar x Type Models | eBay
Thanks all. I had hoped that I wouldn't need a computer to complete the repair. I'm traveling without tools and I don't have a garage. A local repair shop said that they could put it on without difficultly, but didn't know if it would have to be programmed.
I had the same exact problem in my X. It got so bad to the point I couldn't drive it more than a block without my throttle completely cutting out and going into limp home mode, at which point I would try restarting 5 or more times or just push it home.
It was pretty easy and my TPS didnt seem dirty at all but FIXED MY PROBLEM!! It has been 25,000 miles since I did this and has been knock on wood. Worth a try before shelling out big bucks.
Thanks for all the help. We got the car repaired and we're now back home. I kept the old throttle body, so I'll clean and keep it as a spare. Thanks for the link.
I have a 2003 xtype 2.5, it threw a few codes, I was told it was TPS it goes into limp mode and cruise control comes on saying not available etc, so I bought the whole throttle body assembly. Do I have to get reprogramed from jaguar after installing the TB? Please let me know asap, thanks guys
Bsmokey8, myself and one other member have been playing with failed throttle bodies. Atleast the ones we have played with, the problem is not the TPS unit, but the control motor for the throttlebody. This is where you will need to make a decision. You have 3 options as I see it. You can spend the $1600 roughly to get a new throttle body from the dealership and install it yourself (very easy to do, 2 plugs, a snap band, 4 bolts, and 2 hoses), you can spend $400 on a rebuilt throttlebody, but now you are going to be without a car for a few days as the throttlebody goes back and forth, or finally you can remove the throttlebody yourself and get into the control motor and tighten up the springs a little bit. If you tear into the throttlebody, you will need a set of pentalobe bits to access the motor.
In short, what is happening is the brushes that feed power to the motor are not providing sufficient contact to maintain the control motor. So, the car sees the throttle as not responding and therefore it assumes it is a TPS issue.
Thank you for the reply, I am picking up the throttle body assembly tomorrow and I will try it, if I have issues I will contact you. Thank you once again
Good question.As you say throttle position sensor then must be part of the throttle . This part is a black color plastic with two screws connected to front head of the throttle body with a large hornes wire .to replace first determinate gas timing line on the housing where upper screw is located or is two fix hole . Then disconnect the horned wire by pull back the red part and push the lock behind the red part ,then pull the Horne’s out .If has timing position you will see a line and screw housin is oval shape to time the sensor .with a pen or scratch on throttle body mark that position ,then replace with new one. Notice first you must disconnect the battery heads in order to after installation computer read the new information .After replacing turn on the car and let run in normal idol 750RPM for at least 1 minute ,then push the pedal and check if change appear .this will be recognize by feeling engine has no hazitatiin a It get gas as you pushing the pedal .Give a test drive and check your RPM during gear shifting If gears are change on 2.7 till 2.9 “under the 3000RPM then engine is operate correctly and problem is fixed.
Are you saying to create a hatch mark along the black plastic body of the old TPS and extend the mark to the aluminum of the TB? This would help you remove and reinstall the same TPS, but how do you clock a new TPS to an old throttle body?
Originally Posted by John khamis hesar
This part is a black color plastic with two screws connected to front head of the throttle body with a large hornes wire .to replace first determinate gas timing line on the housing where upper screw is located or is two fix hole . Then disconnect the horned wire by pull back the red part and push the lock behind the red part ,then pull the Horne’s out .If has timing position you will see a line and screw housin is oval shape to time the sensor .with a pen or scratch on throttle body mark that position ,then replace with new one.
Patterson: Those elongated holes in the TPS are to position it at the proper angle for correct output / signal voltage from the pink and yellow wires. With the ignition key in the run position and engine off, here are the DC voltages specified by Jaguar:
orange / yellow wire: 5 V reference input from the ECM
black / green wire: ground
pink wire: 0.74 V at idle, 3.97 V at full throttle
yellow wire: 1.65 V at idle, 4.20 V at full throttle
As Thermo notes earlier in this thread, sometimes when you suspect a bad TPS, the real issue is worn brushes in the servomotor controlling the throttle plate. Both can cause erratic air / fuel ratio. After installing the TPS to the correct output / signal voltage, it would be good to check the fuel trims at idle and ~2.5K rpm to see if the ECM is adjusting your fuel trims properly.
12-22-2012, 04:25 PM
