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Jaguar seems to have wired these cats as if they were all going to get
every option. Since most of them did not receive all these options it is
logical we might find MANY unused connectors. Interestingly, most of
most of them have current available.
Jaguar seems to have wired these cats as if they were all going to get
every option. Since most of them did not receive all these options it is
logical we might find MANY unused connectors. Interestingly, most of
most of them have current available.
Considering the nature of the car, it's likely these cars would've been ordered with a decent volume of options, of which there are a number of variations. Single harness for the entire model range simplifies installation of options at the refit factory.
Phil
I drove mine today! I finally decided to take it on a long enough drive to monitor the ignition timing etc to see if it was retarding when warm as I'd suspected after Philip_A said he'd seen that happen due to old knock sensors getting noisy when hot. It doesn't seem to be happening, but I did notice for the first 5 mile or so the STFTs were -8-9% most of the time, but once the car was warmed up they were +4-5%. Is that typical? I can't recall what the long term trims are, but I'm sure they're under 10%.
I'm still trying to work out why the MPG is much worse than it should be once fully warmed up. It's got to be something that only happens when the engine etc is fully heat soaked as if I leave home & head off along the A1 (dual carriageway) for the first 10-15miles the instant MPG at 70MPH keeps climbing slowly until it clears 24mpg slightly. After that, with no difference in driving as typically on cruise it'll drop again till I'm down to 21.7mpg. According to the book it should get near 28mpg & both other Jags I've had have done the book figures so something is wrong.
I'll ask the place it's going in tomorrow for ideas, but figured I'd ask the wisdom this place too. It had one O2 sensor replaced with I got it due to a code, I'm wondering if the others are lying because they're old, does that happen? I did notice Bank2 is often richer on the trims, but I honestly can't remember which side the sensor was replaced, or if it was the upper or lower.
Beside failures, wider tyres or driving in sport mode may have little part in it, or maybe you got few pounds extra since last time thus mpg struggles ?
Managed to break the screen wash bottle on a high curb.
I see JB Weld in my future.
I did the same on a snow and ice rutted land a few months ago. I'm lucky that my indie has a new in "in stock" that a customer never picked up so it get installed along with a few other catch-up odds and ends when he's finished with the catch-up odds and ends he's currently tidying up on the Series 3 VDP.
Old slowly disinitegrating polypropylene. Waiting for it to fully drain out and I'm gonna slap some sealant on it.
Cannot find a definite answer- are both the tensioner and idler pulleys for the main drive belt the same? I can hear the bearings in mine getting a touch noisy.
Also, oil leak was the cam cover bolt I forgot to tighten.
Hooli said: "I'm still trying to work out why the MPG is much worse than it should be once fully warmed up. . . ."
What temperatures are you seeing in the live data, at startup and once fully warmed. Possible the sensor in the cross-over pipe is stuck.
Engine temp once warm in the live data was showing 91-96C, whatever that works out to in F. Seems about right to me as it warmed up a touch when slowing into traffic & dropped when back on the open road for a mile or two until it came back up to 93-94C on a run.
My XJR got put in a garage this week for replacement front spring pans and a coolant leak I just couldn't see.
I collected it this morning, having been told they've put a replacement front spring in too as one was broken. that's cured the pulling to side under braking at least. The coolant leak was fixed* with a new small hose off the expansion tank. When almost home though the low coolant warning came up...
That turned out to be a bit of a blessing as I poked about to see which hose they'd replaced and found one had been misrouted behind an AC pipe. That caused the small hose to rub on a different coolant hose and it already had a 1/8" deep half moon worn in it. So I've rerouted that correctly, much better to have found it than the hose burst when driving about. Topped the coolant up too and I'll continue to monitor it for a bit, I bet they just didn't bleed it right as you have to fill the intercoolers as well despite it all being the same system.
This before, if you can see the clean bit on the medium hose where the small one was rubbing.
And after rerouting so they're well apart from each other. It also means it's not rubbing the AC pipe or side of the rad as it connects to the front. The hose that was rubbing is now the furthest away from the medium pipe.
Why can't garages ever do things right? this is why I've always tried to do my own stuff, apart from saving money it means it's done right. I can't always these days though & there was no way I was doing the suspension work as those springs worry me.
I did some part number matching up & found bleed hose the garage replaced on mine wasn't the misrouted one, but I know they touched it as the joints both ends have got fresh red grease on. I found the hose for £28 so I've ordered it & I'll replace it. It'd cost me half that just to drive to the garage & back to show them the issue, so it's not worth the hassle.
Personally, I have found that most "modern" mechanics...aren't. They claim to know
how to repair our cars but really have no experience doing so. The sole exception for
the Duchess locally, was an older mechanic at a general repair shop. He had a Jaguar
himself, and knew what he was doing. Unfortunately he has recently retired.
