Inherited NA S type with a bunch of issues
#21
#26
#30
https://www.jaguarforums.com/forum/s...-4-2-a-154102/
Going to continue this line of troubleshooting/repair on this thread.
Going to continue this line of troubleshooting/repair on this thread.
#31
Ditto on the fuel trims for me Toybreaker. Lucky for me most all of my rough running issues on our 2 Jags thru the years were resolved with the replacement of one or more ignition coils, zip tieing the connectors here and there, (mainly the throttle motor). and re-timing and associated repairs to the exhaust cam left bank.
A quick check thru the Jag engine stalling reference reminded me of the importance of having the right spark plugs. If the OHM is different, the PCM, ECM ECU whatever, won't read correctly. The other thing comes to mind is the sealing of the air boxes, since the flow thru dictates the fuel and spark delivery. Something else that seems to mess with peoples heads is the grounding of the battery to the engine block and particular sensors. I have seen grounds contribute more than their fair share of weirdness. Just because they crank over, might not mean good enough. Sorry If I am repeating what anybody else has already stated.
A quick check thru the Jag engine stalling reference reminded me of the importance of having the right spark plugs. If the OHM is different, the PCM, ECM ECU whatever, won't read correctly. The other thing comes to mind is the sealing of the air boxes, since the flow thru dictates the fuel and spark delivery. Something else that seems to mess with peoples heads is the grounding of the battery to the engine block and particular sensors. I have seen grounds contribute more than their fair share of weirdness. Just because they crank over, might not mean good enough. Sorry If I am repeating what anybody else has already stated.
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