Re:Rough idle, no power up hill lots of fuel, help please!

Yes bought code reader and was clear with no codes and even after it had another bout of the symptoms it still remained clear.

But the tool was only £20 on Amazon and I am happy to have it, I am sure it will be useful in the future.

Well that's weird! Noteworthy for the future though.

Kirkynut

How so?

Would you normally expect the failing coil pack to put a code in the log?

Maybe my write up was not good enough, I think both the original Cam and Crank sensors were actually not the problem, they were just cheaper than the coil packs, so I changed them first, as I had no way to know which of the 4 things the collective minds on here thought may be the problem, was the problem. Turns out I was just unlucky in that the 4th thing I changed fixed the issue.

But I am happy as I don't see any way I could have done it differently as I had no other donor parts that I could have tested with. I did think that the cold water on the crank sensor made a difference but maybe that was just wishful thinking on my part at the time.

Yes, eventually a failing coil pack shows a code for misfire on cylinder x (whichever one is failing) or on two cylinders sometimes as the Jimny shares 1 coilpack for 2 cylinders.

I had it on my 6 cylinder BMW earlier this year where it would go into limp home mode if I gave it the beans but would start ok and run fine if I turned it off and back on again. It showed no codes though. I guessed it was a sensor or coilpack breaking down but it could have been any of the parts you changed and I wasn't prepared to replace them all as you have on a BMW!

Eventually it did it with not a great deal of throttle and put a code up for misfire on cylinder 3, which narrowed it down to the coilpack on that cylinder but it took a while. No engine management light mind!

Kirkynut

As you say a much more expensive game on a BMW!

Sounds like I was just unlucky in that case.

That said, the parts were not that expensive for the Jimny and at least I know they are right going forwards.

All good learning as far as I am concerned and made so much easier by the great input from this group.

Yes, a tad more expensive on a Beemer but I got a Bosch coilpack from Eurocarparts for £27, which is genuine really, so with 10 minutes to change it was ok!

This is a great forum and I'm so pleased that Facebook hasn't killed it like others.

Kirkynut