S-Type 2003 3.0 Big Question RESOLVED
#21
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Norri (01-10-2019)
#22
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DTC P0430 refers to the Bank 2 catalyst, which usually indicates damage due to repeated misfiring on that bank of cylinders. In my experience, when P0420 or P0430 are present, the catalyst for that respective bank must be replaced once the misfire condition has been corrected.
DTC P0455 can be caused by a broken pipe or loose connection. Might also be simply caused by the fuel tank cap not being fully tightened or the seal on the cap being faulty.
DTC P0455 can be caused by a broken pipe or loose connection. Might also be simply caused by the fuel tank cap not being fully tightened or the seal on the cap being faulty.
#25
2003 s type 3.0 big question
is it working fine? It happens when has pedal is maximum range
https://streamable.com/tljli
https://streamable.com/tljli
Last edited by trycons; 01-19-2019 at 05:46 AM.
#26
Perhaps the throttle body is just keeping time to the music.
Are you noticing any problems while driving? Any fault codes? What led you to observe the throttle plate while flooring the gas pedal? In other words, is there more to the story?
Try this calibration procedure and see if it helps:
https://www.jaguarforums.com/forum/s...ection-176446/
I wouldn't especially worry about such behavior with the engine off. Doesn't seem right, but at the same time, you're putting the system in an abnormal scenario of key on but engine off and then holding the gas pedal all the way down. The true test is how it behaves under normal conditions.
Are you noticing any problems while driving? Any fault codes? What led you to observe the throttle plate while flooring the gas pedal? In other words, is there more to the story?
Try this calibration procedure and see if it helps:
https://www.jaguarforums.com/forum/s...ection-176446/
I wouldn't especially worry about such behavior with the engine off. Doesn't seem right, but at the same time, you're putting the system in an abnormal scenario of key on but engine off and then holding the gas pedal all the way down. The true test is how it behaves under normal conditions.
#27
#28
https://www.jaguarforums.com/forum/s...-3-0-a-212631/
This is my problem on this video. It cant accelerate well.
This is my problem on this video. It cant accelerate well.
#29
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Don B (01-20-2019)
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Hi trycons,
I have merged your new thread with your old thread. Please do not start any new threads on this same issue. It is most helpful to have all of the information and previous posts in the same thread to avoid confusion and duplicate effort on the part of other members who want to help.
Cheers,
Don
I have merged your new thread with your old thread. Please do not start any new threads on this same issue. It is most helpful to have all of the information and previous posts in the same thread to avoid confusion and duplicate effort on the part of other members who want to help.
Cheers,
Don
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JagV8 (01-20-2019)
#31
Ah, now we are getting somewhere.
As JagV8 has suggested, what are the fuel trims?
Also, I would recommend checking the fuel pressure. This requires two things:
1) First, what does your scanner shows for fuel pressure?
2) There is no guarantee the scanner value is accurate, so please also connect a mechanical test gauge to the injector rail. This second step is very important, in case the pressure sensor is feeding bad information to the computer. In that situation, the poor computer may be responding as programmed to what seems like a good value.
As JagV8 has suggested, what are the fuel trims?
Also, I would recommend checking the fuel pressure. This requires two things:
1) First, what does your scanner shows for fuel pressure?
2) There is no guarantee the scanner value is accurate, so please also connect a mechanical test gauge to the injector rail. This second step is very important, in case the pressure sensor is feeding bad information to the computer. In that situation, the poor computer may be responding as programmed to what seems like a good value.
#33
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#37
Thanks for humoring me and checking the fuel pressure.
One more thought on those same lines. Was that reading taken at idle? Maybe try watching the scanner while trying to accelerate, when the fault is active. Just a thought, free to check. Perhaps the fuel flow is partially restricted. You can get normal pressure when demand is low (idle or coasting, for example), but it drops off during high demand.
One more thought on those same lines. Was that reading taken at idle? Maybe try watching the scanner while trying to accelerate, when the fault is active. Just a thought, free to check. Perhaps the fuel flow is partially restricted. You can get normal pressure when demand is low (idle or coasting, for example), but it drops off during high demand.
#39