When I reset the codes it runs perfectly for about an hour. Then it throws these codes and lags when trying to accelerate.
I noticed it runs rough when it started but gets better after warmed up.

Codes:
Restricted performance
0171-Too lean bank 1
0174-Too lean bank 2
0300-Random multiple misfire
0301-Cylinder 1 misfire
0305-Cylinder 5 misfire
0782-2-3 shift
1316-Manufacturer control
1549-Manufacturer control
1647-Manufacturer control
1000-Manufacturer control

What I have replaced in the last year:
Spark plugs and ignition coils
O2 sensor-Upstream
Both intake manifolds
Radiator
Battery
Gas cap
Air filter
Engine filter
Cleaned Maf sensor

I'd really appreciate any advice on what to try next.
Thanks!!

 

What is fuel pressure?

Use DTC list in forum stickies to get proper definitions.

 

I have no clue what fuel pressure is. I looked at the sticky and couldn't find an answer, forgive my ignorance. I am trying to learn.

 

A basic question, or two...

(okay, perhaps more than two) Which engine is your S-type equipped with? Where did you get your codes? Do you, yourself, have a scanner which can real all codes on a Jag?

A proper scan tool with live data should be able to get your fuel pressure. Depending on which engine you have, there should also be a connection for a mechanical gauge to read the actual fuel pressure. The scanner will tell you the pressure the sending unit is seeing.

To use a phrase often employed here, it appears that you have fired the "parts canon" at your Jag. Were you attempting to sort a specific problem, or just performing "maintenance"?'

 

Actually, the preferred term is “parts catapult” (Pull!). With the cannon, the shock is excessive and delicate parts can be damaged. The catapult by design has a much smoother delivery sequence and is less likely to cause damage. Pretty much the same overall efficiency for effective repair, though.

All seriousness aside, a brief bit of history will be very helpful. Specifically, did the symptoms change with any of these new parts? For example, bargain-brand ignition coils have been known to cause headaches right out of the box. I’ve had a quality name brand coil fail soon after installation.

 

Codes PDFs are also on JagRepair.com - Jaguar Repair Information Resource

Or search forum - #1 to fix is probably P1647, then P0171/P0174

NOTE: DO NOT LEAVE THE LEADING LETTER OFF THE CODES!

 

I also have the P1647 on my X308.
If you enter P1647 into google, it tells you that it is one of the upstream sensors (=O2 sensor on catalyst).
This would be nonsense on my X308, since I have replaced them all recently. It also does not cause problems on my X308.
I also just had briefly P0332 (=knock sensor) on my X308 AND restricted performance, but I am sure that was because I used (even though very carefully) a water pressure cleaner on the engine. This issue disappeared by itself. I assume, when the water had evaporated, so did the P0332.

So, yes, if you are sure that your OBD2 reader gives you correct codes, check on google as to what they all mean.

 

The S-Type code PDFs point out it doesn't have to be the sensor itself. Probably true for your car too.

Also, you can fit the wrong kind or a faulty one so that the code doesn't go away.

I think you're fooling yourself there. Chances are it's not got the right AFR and that has consequences such as destroyed cat.

 

@ JagV8: Well, maybe I am fooling myself, but I got currently no other choice - lack of time - I might revisit my P1647 issue at a later stage.
I just started a paid Engineering Job again - half way thru changing the rear crank shaft seal (i.e. tranny has to come off) on my X-Type - it's sitting there and waiting.
On my S-Type I suddenly have a major major pwr. steering fluid leak (I am waiting for the replacement hose/pipe, which I hope is the problem).
And I have to get rego (MOT) for my X308, hoping that disintegrated lower rear shock bushes are not a rego-fail... (I am waiting for those parts, too).

 

All the codes have a P (Powertrain) in front.
I've used a generic OBDII scanner but have also taken it to three mechanics, who also scanned it. One of them specializes in European cars.

The codes didn't change or go away after the repairs, so there was no change. However, the restricted performance mode ONLY happened AFTER the intake manifold motor was installed. My mechanic recommended replacing the other IMM, so I did, but still no change. I can't even get it out of their lot before the codes pop.

In researching a possible solution to this, I've looked at the PDF and researched Google to find out what all the codes mean. That's how I determined what parts to replace. I have been in the process of elimination, which I now know is "catapult"!

What I have replaced in the last year:
Spark plugs and ignition coils
O2 sensor-Upstream
Both intake manifolds
Radiator
Battery
Gas cap
Air filter
Engine filter
Cleaned Maf sensor