Are the codes both fixed and at least 2 warm-ups since they were to make sure they're not coming back?

yes

It's never going to run right until they're all fixed.

but i say, they are fixed. no idea what to check / do now

OK... what pending codes? You should have P1111, but may have P1000 and/or others.

still p1000

OK, so which monitors are not happy?

While looking, check every sensor you can figure out for plausibility (e.g. ECT, IAT).

You've got to realize you have an unusual situation and are in somewhat uncharted territory here. It's not as if any of us are experts or have seen this before. We can't conclusively state, "This sounds like a defective XYZ sensor" or anything like that. You may just have to make some educated guesses and try a few different things.

Personally, I'm big on reviewing the history of when the problem started. Unless I've missed something, I'm still unsure if the rough running got better or worse after all that recent work.

One thought is to use a mechanical gauge to check the fuel pressure. The computer adjusts the fuel pump output to maintain a certain pressure range. Fuel scheduling assumes a certain pressure is present. If the pressure sensor is inaccurate, the computer will happily adjust pump output to this invalid signal. The end result is too much or too little fuel, with no fault codes.

i bought this car after he stays 2 years, it happend from begening, then i do all that work, and he drive a lot better, but its not good at all , as u can see. i will check that fuel pressure

Ah, making some progress.

You're saying the car sat for two years? These cars are notorious for fuel pump problems after sitting idle for extended periods. I'm not saying to rush out and replace the pump, but certainly check it out.

How much have you driven the car since bringing it out of storage? Is it still running on the same old fuel in the tank from storage?

the fuel pump was changed to new one bc i havent got fuel guage up when i tank

no no, i drive car now about 1 year

Definitely check the pump output with a mechanical gauge and compare it to the scanner value that the computer sees. There are no guarantees the new pump is good, or is receiving a correct command.

Where are you located? Even if the fuel is fresh, could quality be a problem? These engines require high octane fuel. If the fuel quality and/or octane is low, preignition may result. But in that case, the knock sensors may be doing their job and retarding the timing to prevent engine damage. This could easily cause low power under full throttle, but with no fault codes.

Im from poland , rather not, quality is good

The P1000 is bad news, so post #27 is one of the very few remaining hopes.

By clearing the codes, thus causing P1000, you may have put the car into Catch-22 where it can no longer flag up what's wrong.

im thinking about the P1245 this is CKP sensor . this code just disaapear without do anythyng, the CKP sensor can do this symptoms ? what RPM should be on idle in P, and D?

Would it help to drive very gently for several cycles, and hopefully satisfy the monitors?

Another thought about fuel pressure. Set up your scanner to show live data. Have a helper watch the scanner while you drive on an empty road and floor the gas pedal. IIRC, the fuel pressure is supposed to rise with increased load on the engine. If the pressure stays the same, that points to the computer not receiving a proper input (fuel pressure regulator?). If the pressure drops, that's probably a physical fuel delivery problem, such as a marginal pump or a clogged pickup sock. Won't cost anything to check...

It might help, but it's not specifically the gentle part - rather, follow the drive cycle stuff in the various PDFs. But first look at which monitors are unset so you know what to concentrate on (and which codes are suppressed).

You don't have a CKP sensor fault. CKP sensor is the generic definition of code P1245, applicable to most vehicle brands.

For Jaguar, however, this code translates to "Engine crank signal low voltage". You've got to be real careful to always follow the Jaguar definition of a code, not the generic definition your scanner may be telling you.

Details here:

http://jagrepair.com/images/AutoRepa..._OBD_II_R2.pdf


If P1245 hasn't returned, it was probably just a nuisance thing. I'd only worry about it if it keeps returning.

Except that, with unset monitors the car is unable to flag many codes. That may be one of them.

What progress on identifying which are unset?

And what on the relevant driving per the relevant drive cycles for each unset monitor?