X300 ignition coil - the saga continues
#41
#42
The following 4 users liked this post by James83g4kadm:
Don B (11-01-2022),
littlelic69 (11-05-2022),
SKRTSKRTXJR6 (11-01-2022),
someguywithajag (11-02-2022)
#43
![Default](/forum/images/icons/icon1.gif)
https://www.maceengineering.co.nz/ep...ectID=78438764
I'm 200km into road testing a single coil, ive decided to order the other 5, So far running well in all conditions.
I'm 200km into road testing a single coil, ive decided to order the other 5, So far running well in all conditions.
The following 2 users liked this post by James83g4kadm:
Don B (11-06-2022),
someguywithajag (11-06-2022)
#44
#45
![Default](/forum/images/icons/icon1.gif)
Update on coils:
Still haven't installed the Prenco coil I mentioned earlier, as the Made In Japan ones I got back in 2016 are still running strong. I did notice that Walker Thunderspark coils (the ones with brass inserts that could be good) are, after a short time in stock, becoming out of stock or with limited supply all over the internet, so I just ordered the last five available on Rockauto and will report when they arrive.
Still haven't installed the Prenco coil I mentioned earlier, as the Made In Japan ones I got back in 2016 are still running strong. I did notice that Walker Thunderspark coils (the ones with brass inserts that could be good) are, after a short time in stock, becoming out of stock or with limited supply all over the internet, so I just ordered the last five available on Rockauto and will report when they arrive.
#47
#48
#49
![Default](/forum/images/icons/icon1.gif)
Spud,
odds on the idle issue is your TPS. There is no manual adjustment as such.
There is a heap of bedtime reading on the subject on here, but all roads seem to lead to Rome (TPS!)
Good luck finding someone who can do the reset, which won’t fix a worn out TPS. A new TPS likely won’t need a reset.
Ask me how I found all of this out…..!
odds on the idle issue is your TPS. There is no manual adjustment as such.
There is a heap of bedtime reading on the subject on here, but all roads seem to lead to Rome (TPS!)
Good luck finding someone who can do the reset, which won’t fix a worn out TPS. A new TPS likely won’t need a reset.
Ask me how I found all of this out…..!
The following users liked this post:
Don B (01-17-2023)
#50
![Default](/forum/images/icons/icon1.gif)
I noticed on the Walker website they offer a TPS for the X300
I am always temped to grab one at a salvage yard as a backup.
Search | Walker Products Catalog (opticatonline.com)
I am always temped to grab one at a salvage yard as a backup.
Search | Walker Products Catalog (opticatonline.com)
![Icon Dance Disco](https://www.jaguarforums.com/forum/images/smilies/icon_dance-disco.gif)
#51
![Default](/forum/images/icons/icon1.gif)
Spud,
odds on the idle issue is your TPS. There is no manual adjustment as such.
There is a heap of bedtime reading on the subject on here, but all roads seem to lead to Rome (TPS!)
Good luck finding someone who can do the reset, which won’t fix a worn out TPS. A new TPS likely won’t need a reset.
Ask me how I found all of this out…..!
odds on the idle issue is your TPS. There is no manual adjustment as such.
There is a heap of bedtime reading on the subject on here, but all roads seem to lead to Rome (TPS!)
Good luck finding someone who can do the reset, which won’t fix a worn out TPS. A new TPS likely won’t need a reset.
Ask me how I found all of this out…..!
got it booked in with Dr Jag (Greg Parsons) who is one of the top Jag guys round here.
he has all the equipment and knows these cars real well as he himself also has one. Which he has at some point rebuilt (as much as parts were available anyway).
if that fails i have been pointed to someone else around here Cambo who could likely do it also but when i spoke with him he was real busy at the time.
i assume it is the calibration of the TPS as when i hook up OBDII to Tourque app i am getting reading all the way from 12.5% @ idle to 100% at WOT. so it is reading, it may just p[otentially be out of sync with where it should be at
Last edited by Spud Maat; 01-18-2023 at 05:28 AM.
#52
![Default](/forum/images/icons/icon1.gif)
I noticed on the Walker website they offer a TPS for the X300
I am always temped to grab one at a salvage yard as a backup.
Search | Walker Products Catalog (opticatonline.com)![Icon Dance Disco](https://www.jaguarforums.com/forum/images/smilies/icon_dance-disco.gif)
I am always temped to grab one at a salvage yard as a backup.
Search | Walker Products Catalog (opticatonline.com)
![Icon Dance Disco](https://www.jaguarforums.com/forum/images/smilies/icon_dance-disco.gif)
if only i had one of those mythical money trees.
#53
![Default](/forum/images/icons/icon1.gif)
I should provide an update. Earlier this year, I changed the spark plugs on my XJR (same copper Champions as the updated TSB suggests), and while I had the (fully-working) Diamond coils out I replaced them with the mix of Prenco and Walker coils I'd gotten as shown above. So far it's been running identically; I have a slightly rough idle when warmed up, but that still happened beforehand and I suspect there's an issue with my fuel injectors. For now I can still vouch for Prenco and Walker coils so long as they don't change suppliers; as always, look for the signs that they're the right ones (brass bolt isolators and a rectangular piece in the dielectric material. Partsgeek and Rockauto still have the Walkers for roughly $30 apiece, while FCPEuro has the Prencos for $44 apiece, but it's hard to say if that's worth the higher price.
EDIT: And it looks like the good Eurospares may also be back! Haven't tested them myself though. https://www.partsgeek.com/29h21b8-ja...tion-coil.html
EDIT: And it looks like the good Eurospares may also be back! Haven't tested them myself though. https://www.partsgeek.com/29h21b8-ja...tion-coil.html
Last edited by labcoatguy; 10-09-2023 at 10:02 PM.
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