1995 XJS Accelaration hesitation and stalling at stops
#1
05-10-2022, 05:57 PM
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1995 XJS Accelaration hesitation and stalling at stops
Over last three months XJs (6 cyl) has started to hesitate and stall - seems to be getting worse. Took car in twice to local repair who looked at a number of issues, but were not able to resolve the issue. No issue restarting the car. Their summary follows. Car is unsafe to drive, I love the beast and an desperate to get it fixed. Suggestions please.
Lee
vehicle Time In: 5/6/2022
1995 Jaguar XJS black
Odometer In: 80779 Odometer Out: 80844 License: EX525MI VIN: SAJNX2741SC199665
Second Exam
Installed fuel pressure gauge, spark tester to try to narrow down if a spark , injector pulse or fuel problem
Noticed cracked intake boot. Repaired the boot because a new one is not available.
could not pinpoint direction?
fuel pressure -OK
never lost spark
injector pulse looked OK
cleaned and reset throttle plate- did not help
Installed scan tool to monitor pids while driving, all readings looked OK.
When concerns happen scan tool data resets and acts like lost power to everything when car acted up.
Monitored power, signal and ground at TP sensor- never dropped out?
Felt like tip in hesitation, possible throttle position sensor = installed sensor for test purposes – did not fix concern.
Vehicle Time Out 4/5/2022 3:44:16PM
First Exam
Checked fault memory and there were no faults found. Cleaned throttle body and found intake boot not sealing properly on the MAF. Re,installed boot properly and test drove about 20 miles and the vehicle never acted up.
Noticed while driving that the vehicle takes a very long time to get to operating temperature. Possible thermostat sticking open. Also noticed the ABS light went on and off and set a C1095 Pump motor failure. Recommend Diagnosis if light comes back on.
Lee
vehicle Time In: 5/6/2022
1995 Jaguar XJS black
Odometer In: 80779 Odometer Out: 80844 License: EX525MI VIN: SAJNX2741SC199665
Second Exam
Installed fuel pressure gauge, spark tester to try to narrow down if a spark , injector pulse or fuel problem
Noticed cracked intake boot. Repaired the boot because a new one is not available.
could not pinpoint direction?
fuel pressure -OK
never lost spark
injector pulse looked OK
cleaned and reset throttle plate- did not help
Installed scan tool to monitor pids while driving, all readings looked OK.
When concerns happen scan tool data resets and acts like lost power to everything when car acted up.
Monitored power, signal and ground at TP sensor- never dropped out?
Felt like tip in hesitation, possible throttle position sensor = installed sensor for test purposes – did not fix concern.
Vehicle Time Out 4/5/2022 3:44:16PM
First Exam
Checked fault memory and there were no faults found. Cleaned throttle body and found intake boot not sealing properly on the MAF. Re,installed boot properly and test drove about 20 miles and the vehicle never acted up.
Noticed while driving that the vehicle takes a very long time to get to operating temperature. Possible thermostat sticking open. Also noticed the ABS light went on and off and set a C1095 Pump motor failure. Recommend Diagnosis if light comes back on.
#2
05-10-2022, 06:10 PM
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#3
05-10-2022, 08:44 PM
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#4
05-11-2022, 02:06 AM
Welcome to the forums Chipperx525mi,
I've copied your question to XJS forum for advice from members with the same model. Here's the direct link to it:
https://www.jaguarforums.com/forum/x...-stops-258803/
Follow this link https://www.jaguarforums.com/forum/s...ed-v8-x200-15/ to the main SXJS 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 US Western Region forum by following this link https://www.jaguarforums.com/forum/us-western-38/ 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
I've copied your question to XJS forum for advice from members with the same model. Here's the direct link to it:
https://www.jaguarforums.com/forum/x...-stops-258803/
Follow this link https://www.jaguarforums.com/forum/s...ed-v8-x200-15/ to the main SXJS 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 US Western Region forum by following this link https://www.jaguarforums.com/forum/us-western-38/ 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
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