Jaguar F-Pace Non Runner

[B'stard Child]

Escy said:

Having done a bit of research on the internet, I saw something about if you remove the top part of a diesel injector which has the solenoid the ECU calibration is lost. Not sure how true that is, can't find much else on it.

It also seems fairly common for people with newly fitted injectors to get an injector knock. The ECU re-calibrates the fuel quantity values and the knock goes after some driving. So I guess I just need to drive it and see what happens.

Does powering down the ECU cause all learnt values to be reset?

Sometimes that helps to reset when the ECU is a little lost calibration wise

[Megaflow]

Escy said:

Having done a bit of research on the internet, I saw something about if you remove the top part of a diesel injector which has the solenoid the ECU calibration is lost. Not sure how true that is, can't find much else on it.

It also seems fairly common for people with newly fitted injectors to get an injector knock. The ECU re-calibrates the fuel quantity values and the knock goes after some driving. So I guess I just need to drive it and see what happens.

Removing the solenoid from the top of the injector should not change the calibration of the injector, providing the same solenoid goes back onto the same injector. You also need to make sure the injector go back in the engine in the same cylinder they came out of.

Apologies if what follows is sucking eggs, but just for clarity. An injector has a certain flow rate, let’s say 250cc/min. When the injectors are built they are selectively assembled because tolerances are so tight, once they are built they are tested and the exact flow established. That exact flow is accounted for in the trim code that is in the data matrix on the injector, that trim file is loaded into the ecm along with the cylinder it is fitted to. The injector therefore has to go back in the cylinder it came out of so the trim file matches

Edited by Megaflow on Saturday 1st April 10:26

[Arnold Cunningham]

Re. Ecu calibration. Yes, I have had this, although on a different motor. In fact, I did worse. I correctly coded the new injector in, but then rather than leave it at that as I should have, I also did an ecu calibration reset. So it still had the codings, but not the “learnt” offsets. Took about an hour of driving for it to relearn them all, sounding generally like a bag of nails and about to self destruct. All fine in the end, fortunately, but I certainly made things harder for myself than they needed to be

[QBee]

Re earlier posts about Jaguar LandRiver’s problems, there’s a £3 billion class action starting about manufacturing defects in these cars made between between 2017 and 2022.

URL is www.jlryouoweus.co.uk

[Captain_Morgan]

QBee said:

Re earlier posts about Jaguar LandRiver’s problems, there’s a £3 billion class action starting about manufacturing defects in these cars made between between 2017 and 2022.

URL is www.jlryouoweus.co.uk

Would that be the short lived, ill fated aquatic spinoff?

[Escy]

Rather than drive it and hope it sorted itself out I decided to pull the injectors back out and have another look. This proved to be a good decision. In the picture bellow you can see a little washer that is a seat for the spring. One was missing, it had all sprang apart on removal of the solenoids and I didn't realise it was missing as I did them one at a time to make sure nothing got mixed up and it was the first injector I did.

IMG_20230331_142143008_HDR

Looking for that was like a needle in a haystack. Luckily there was a local breaker that had one listed on ebay. £55 later I was the owner of the scabbiest looking injector. Rather than fit this then try and code it in I elected to just swap the spring seat into my injector.

IMG_20230401_113506775

I couldn't get new bolts and washers so had to re-use the old ones so I'm basically back to square 1, the reason I pulled them out was I wanted to fit new. I'll order some more and do it again just to be sure. If you get a small leak you can't really tell. The good news is the car is back up and running, drives nicely again now.

The bad news is it still sounds like a Massey Ferguson. The DPF mods haven't made the difference I hoped.

The brake pad warning light came on, it needed rear pads.

IMG_20230401_180639095

Changing the charge cooler pump hasn't solved the warning that keeps coming up. Not going to look into this for a while, had a guts full of it.

IMG_20230401_203002265_HDR

[Macron]

Mate, surely they time has now come....

[AW111]

If I ever have to re-use copper sealing washers, I heat them to anneal them.

[Escy]

I did do that but there are groves in them from where they previously were clamped down so probably best to replace them again just to be sure it's not leaking slightly.

[AW111]

Escy said:

I did do that but there are groves in them from where they previously were clamped down so probably best to replace them again just to be sure it's not leaking slightly.

I'd do the same.

[stevemcs]

PF Jones are reasonable for injectors

https://www.pfjones.co.uk/diesel-fuel-pumps-and-in...

[I-am-the-reverend]

I read this start to finish, then used my 2007 Auris daily banger to nip down to Aldi. This tediously reliable Jap is the best £3000 I ever spent, 4 years ago. It's probably worth £1500 now, 70,000 miles later with a total of almost 180,000 on tbe clock. Petrol four, regular 40+ mpg.

You can keep the JLR stuff - and modern diesels. They're just a hiding to nothing.

Good effort Mr Esc but I think the time to offload this thing is approaching.

[smn159]

I-am-the-reverend said:

...then used my 2007 Auris daily banger to nip down to Aldi.

Living the dream

Only kidding, I have a daily that's older than yours, but I can see why people want nicer stuff

Kudos to the OP for persevering with this one

[I-am-the-reverend]

smn159 said:

Living the dream

Indeed.

But I look at all this stuff, broken BMW/Merc/Audi engines for one reason or another and I'm puzzled. Can it really be so hard to make an engine that just.....you know.......works?

[Monkeylegend]

To be fair the Mercedes 4 pot diesel works very well and if serviced properly is very reliable.

I drove a C220CDi and three E220CDi's over a period of 12 years a collective mileage of 1.1 million miles, the three E Classes did over 300k miles each, with no engine issues whatsoever. The last one is still happily running around at 332k miles.

Edited by Monkeylegend on Monday 3rd April 15:44

[Escy]

It's all manufacturers. The engine used in 2007 Auris diesel wasn't exactly the last word in reliability either and that's before all the DPF business came along.

[QBee]

Escy said:

It's all manufacturers. The engine used in 2007 Auris diesel wasn't exactly the last word in reliability either and that's before all the DPF business came along.

It all seems to have gone tits up when all manufacturers suddenly started quoting mpg numbers that were about 25% better than the previous year/model.
Around 2010 to 2012 IIRC.
Just look at a range of ages of, say, BMW X3 2 litre diesels and you will spot this straight away. Othrer makes and models seem to follow suit.
Better economy, but far more issues with reliability (not to speak of class actions re lies about fuel consumption).

[I-am-the-reverend]

Monkeylegend said:

To be fair the Mercedes 4 pot diesel works very well and if serviced properly is very reliable.

I drove a C220CDi and three E220CDi's over a period of 12 years a collective mileage of 1.1 million miles, the three E Classes did over 300k miles each, with no engine issues whatsoever. The last one is still happily running around at 332k miles.

Edited by Monkeylegend on Monday 3rd April 15:44

Thje OM646 is a cracking engine, the last of the really good diesels as was the OM612.

[anonymous-user]

It is amazing how used you can get to rough old four cylinder diesels. It is only when you go back to a petrol car do you realise how noisy and agricultural they really are.

I guess the more premium brands have a lot more sound deadening in the car to hide this more.

[I-am-the-reverend]

Escy said:

It's all manufacturers.

Not really.

Go to any fly blown third world country and most cars are Japanese or Korean. There is a very good reason for that.