P0022 then P0021

This is the problem with Jaguar. While Jag did design the AJ V8 (and own the patents)... the Ford manufacturing facility in Lima, Ohio took a back seat to Jaguar's priorities.

The "powers that be" handed everything over to Jaguar, which as we see now is biting LS owners in the a$$.
 
This is a diagram from the Jag service manual. You can see that if the VVT solenoid valve potentially gets stuck in the "fully advanced position" that could cause the P0021 code over advanced code.

1695318343280.png
 
04_Sport_LS said:
Good find!!!

Makes sense since any moving part can fail.

So what's the plan???

New VVT solenoid first?
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Yes, problem is that the OEM part is unavailable through the dealership and FPG. Jag is >$300 for just the VVT!!!!

So, aftermarket is the only option. I'm ordering now from RA. What a pain to undo what I had just done with the front cover. Been there, got the greasy T-shirt. Hopefully this time it might be easier.
 
Ummm... I think the only thing you need to pull to remove the VVT solenoid is mostly the valve cover and the ignition coils.

If you didn't do it already... Get new rubber grommets for the VVT solenoid.

Those are easy to do, and the last thing to install, since they just pry out and push in.
 
04_Sport_LS said:
Don't buy the cheapest solenoid...
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I did not!!!! I know better than that! LOL!

04_Sport_LS said:
I think the only thing you need to pull to remove the VVT solenoid is mostly the valve cover and the ignition coils.
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That would be great! It depends if I need to remove the bush carrier to get them out.

I also noticed that my oil filler neck is leaking a bit from where it joins the valve cover. Does that have a gasket? If not, I'll put a bead of RTV on it.
 
rgorke said:
I did not!!!! I know better than that! LOL!


That would be great! It depends if I need to remove the bush carrier to get them out.

I also noticed that my oil filler neck is leaking a bit from where it joins the valve cover. Does that have a gasket? If not, I'll put a bead of RTV on it.
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There is a gasket, but good luck finding a replacement one. RTV is the right idea. You can twist and pop the filler out to better apply the RTV and then reinstall it.
 
The seepage at the filler neck is normal. I replaced the O-ring on the filler neck at one point (total PITA)... only to have it start seeping a number of months later. So it's normal, and just live with it.
 
I would assume (since you hit almost everything else) that there would be no reason.

If you change out the VVT grommets... be aware that they will slightly seep oil similar to the oil fill.
 
I was reading through this thread and you posted links to the Jaguar forum, specifically this on with the suggestion of changing the oil and filter and putting in 1 quart of Mercon V to clean the passages of the VVT. Now, they had a different code of P1386 and P1388 but still dealing with the VVT.

VVT issues p1386 p1388 p1386 solenoid - Jaguar Forums - Jaguar Enthusiasts Forum

I am also scratching my head on the DTC "Intake (A) camshaft Position timing - Over-Advanced (Bank 2). Bank 2 is driver's side, right?
 
On the Jag forum...The tranny fluid addition was to try and clean out any gunk in the phaser so that the lock pin would operate properly when full oil pressure was reached.

If you never noticed a rattle at engine start up, you don't have that issue.

And yes... bank 2 should be drivers side. The intake (A) camshaft is driven by the cam phaser, which then drives the exhaust camshaft through the secondary chains. At least that's the way I understand it works.

It seems like you have a drivers side cam phaser issue like Joe suggested.

Maybe you should contact Vintage Parts, or Terry's Jag to verify.
 
04_Sport_LS said:
Maybe you should contact Vintage Parts, or Terry's Jag to verify.
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good idea, I'll do that tomorrow.

I got the solenoid out with just taking the valve cover off on the drivers side. When I examined it, the shuttle valve was stuck and I couldn't move it up or down very easily. After gently pushing on it, it seemed to work it's way loose again. Not sure if there was something lodged in there or the spring is loosing its springyness or what but it moves easier now.

I do have a new one that should be coming tomorrow. Hopefully that is the issue. Looking at this picture, having the shuttle valve stuck in the down position would cause an advanced situation.

1695345396950.png
 
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