Petrol X Type 2.1 2003 A/T and poor performance
#1
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Good evening from Cyprus!!
Hi to all of you, i am Dimos!!
I am a new owner of an old lady, car lover (this is my 49th) and wannabe technician (would love to be a professional...!!)
I had no problems with my car since one day i decided to replace the fuel pump - previous owner pured some very bad quality petrol, as he said. Changed the battery too, but the issues (difficult cold start and shaking like a drunk train in idle etc) and codes starting to appear one by one, until i decided that hard reset was a good option, and so i did it. OBD today gives me only P1647, an issue i knew it existed since the beggining of my co-existance with this beauty. I don't think fuel pump needed to be replaced after all...
- Cold start is difficult
- Is this O sensor issue enough to cause such a poor performance when the car moves in low speed? when accelerating it "gaps", chocking like and it changes the speed after 5000rpm. It all becomes normal after 60Mph but when decellerating and steping the gas to change speed the problem returns.
- Does the "relearning" process after hard reset takes so long and is it so annoying?!
- I haven't change the sparking plugs but i don't know what and if the benefit will be...
- Today i spoted that dash light was fading out when steping at the gas to accelerate...
I apologize for my English, is not one of my strong points as you see -)
This is my first post but i am messing around quite some time and admiring your knowledge and the "bypasses" and "short cut" solutions you find!!!
Thank you in advance for your time and you kind help!!!!
Hi to all of you, i am Dimos!!
I am a new owner of an old lady, car lover (this is my 49th) and wannabe technician (would love to be a professional...!!)
I had no problems with my car since one day i decided to replace the fuel pump - previous owner pured some very bad quality petrol, as he said. Changed the battery too, but the issues (difficult cold start and shaking like a drunk train in idle etc) and codes starting to appear one by one, until i decided that hard reset was a good option, and so i did it. OBD today gives me only P1647, an issue i knew it existed since the beggining of my co-existance with this beauty. I don't think fuel pump needed to be replaced after all...
- Cold start is difficult
- Is this O sensor issue enough to cause such a poor performance when the car moves in low speed? when accelerating it "gaps", chocking like and it changes the speed after 5000rpm. It all becomes normal after 60Mph but when decellerating and steping the gas to change speed the problem returns.
- Does the "relearning" process after hard reset takes so long and is it so annoying?!
- I haven't change the sparking plugs but i don't know what and if the benefit will be...
- Today i spoted that dash light was fading out when steping at the gas to accelerate...
I apologize for my English, is not one of my strong points as you see -)
This is my first post but i am messing around quite some time and admiring your knowledge and the "bypasses" and "short cut" solutions you find!!!
Thank you in advance for your time and you kind help!!!!
Last edited by Dimos; 09-27-2021 at 03:20 AM.
#2
Join Date: Mar 2015
Location: Dural, Northwest Sydney. Australia.
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#3
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Welcome to the forums Dimos,
Good to have you with us.
If you haven't already found it, follow this link https://www.jaguarforums.com/forum/x-type-x400-14/ to the X-Type forum for help, advice and information. The 'HOW TO' thread at the top is a good place to start for information on regular issues. You can also use the Europe Region forum by following this link https://www.jaguarforums.com/forum/europe-42/ to find other members in your region.
Please read the guidance for new members ( https://www.jaguarforums.com/forum/n...ned-up-241802/ ) which answers many of the most frequent questions about getting started.
Enjoy the forums.
Graham
Good to have you with us.
If you haven't already found it, follow this link https://www.jaguarforums.com/forum/x-type-x400-14/ to the X-Type forum for help, advice and information. The 'HOW TO' thread at the top is a good place to start for information on regular issues. You can also use the Europe Region forum by following this link https://www.jaguarforums.com/forum/europe-42/ to find other members in your region.
Please read the guidance for new members ( https://www.jaguarforums.com/forum/n...ned-up-241802/ ) which answers many of the most frequent questions about getting started.
Enjoy the forums.
Graham
#4
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Grant Francis (09-27-2021)
#10
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Dimos (09-27-2021)
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#14
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Dear all, i am back!
So, today i did something because i was pissed off and i didn' t know what to do, before i remove the TPS and TB to clean them, as better as i could.
I started to uplug some of the sensors while the car was working and guess what: unpluging the Alternator light from manifold intake, the car stopped shaking and started to behave as a lady!!! i re-pluged it and there it was again, a delirious tremens!!!
I drove it a little unplugged, and it wasn't as good as it should but it was definetely better!
As far as ot concerns the TPS cleaning, it was dirt, very dirt, very very dirty. I throw carb spray, left it for a long time to dry, wiped as much as i could the intake body with a towel and rebuilded all as it was.
It now works better and i am wondering: is the "relearning" procedure after the hard reset a possible root cause to all this lean issue thing, when in low speed?
So, today i did something because i was pissed off and i didn' t know what to do, before i remove the TPS and TB to clean them, as better as i could.
I started to uplug some of the sensors while the car was working and guess what: unpluging the Alternator light from manifold intake, the car stopped shaking and started to behave as a lady!!! i re-pluged it and there it was again, a delirious tremens!!!
I drove it a little unplugged, and it wasn't as good as it should but it was definetely better!
As far as ot concerns the TPS cleaning, it was dirt, very dirt, very very dirty. I throw carb spray, left it for a long time to dry, wiped as much as i could the intake body with a towel and rebuilded all as it was.
It now works better and i am wondering: is the "relearning" procedure after the hard reset a possible root cause to all this lean issue thing, when in low speed?
#15
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#16
#17
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I cannot locate it in this diagrammas, sorry... let me explain you, if i can:
as i am standing in the front of the car, looking at the motor, in the left side up - lets say next to the ECU, on its right side (toward my right hand) - there are 3 sensors, in the body of the motor. I unplugged the middle one, the one who has more cables and a wider plug than the 2 others. After unplugging it, the OBD says about Alternator Light something...
But i want to share something more with you: today, as i drove it, it gave the impression that the issue starts from the pedal. As a matter of fact, a few months ago i recall i had the same sence but i didn't pay much attention. Steping at the pedal it lacks, it chockes and it accelarates but poorly, forgeting to react like this from time to time.
Otherwise, the idle is perfect, it works smoothly, no shaking, easy start...
Tell me oh Graham, show me the light!!!
as i am standing in the front of the car, looking at the motor, in the left side up - lets say next to the ECU, on its right side (toward my right hand) - there are 3 sensors, in the body of the motor. I unplugged the middle one, the one who has more cables and a wider plug than the 2 others. After unplugging it, the OBD says about Alternator Light something...
But i want to share something more with you: today, as i drove it, it gave the impression that the issue starts from the pedal. As a matter of fact, a few months ago i recall i had the same sence but i didn't pay much attention. Steping at the pedal it lacks, it chockes and it accelarates but poorly, forgeting to react like this from time to time.
Otherwise, the idle is perfect, it works smoothly, no shaking, easy start...
Tell me oh Graham, show me the light!!!
#20
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Good Morning Dimos,
We need advice from X-Type owners with the same model. I have therefore copied this thread to X-Type forum. Here is the link to it:
https://www.jaguarforums.com/forum/x...rmance-251733/
I have removed all the "welcome" and "thanks" posts from the new thread just leaving the "technical" ones. Please use the new thread in X-Type forum to continue this topic.
Regards,
Graham
We need advice from X-Type owners with the same model. I have therefore copied this thread to X-Type forum. Here is the link to it:
https://www.jaguarforums.com/forum/x...rmance-251733/
I have removed all the "welcome" and "thanks" posts from the new thread just leaving the "technical" ones. Please use the new thread in X-Type forum to continue this topic.
Regards,
Graham
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Dimos (09-28-2021)
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