Jag X-Type 2.0D Turbocharger Problem?

Hello everyone,

Maybe someone has an idea...
(2004 Jaguar X-Type Estate/Wagon 2.0D with 250,000 km, engine similar to Ford Mondeo 3 TDCI 130hp).
Common rail.

The car just came out of the workshop; the water pump and power steering pump were defective and have been replaced.
Before the power steering pump was identified as the problem, I had replaced the power steering suction hose due to visible damage (possibly caused by a rodent). During the process of refilling the power steering fluid, the engine was briefly started several times, but air (foam) was always present after just a few seconds. We then determined that the pump was the cause and replaced it along with the water pump. The defective pump, of course, had spilled some oil in the surrounding area.
I'm writing this specifically because the car was started very frequently, but only for a few seconds each time.

After the repair:

The car initially produced a lot of black smoke, but after a few kilometers, it seemed to return to normal. I then drove about 60 kilometers without any problems, the performance was excellent, there were no unusual issues, and the power steering was working again.

Last night, while accelerating, I heard a strange noise, something like a dent popping out of a metal can, a metallic, quite loud sound. It was a single 'thud.' It was clearly audible, around 80 km/h.

Then there was an immediate loss of power, but I was able to continue driving slowly. Every time I tried to accelerate, there's a kind of 'whooshing' sound, almost like the noise of an internal fan, but obviously no turbo boost engaged (no extra power).
If you keep your foot on the gas pedal, you'll experience strong, unpleasant jolting.

I've never heard a sound like it; it's hard to describe. The typical quiet whistling sound that usually occurs when inserting a charger is not present or is inaudible.

'The engine idles normally, and there are no error codes, which I checked using an OBD2 scanner. The car feels sluggish, and there's no black smoke. The noise is not reproducible when the car is stationary.'

Does anyone have any idea what this could be?

Best regards, Thomas.

It sounds like there might be a leak in the charge air cooler system. It's best to have a pressure test performed.

Hello,

Quote:

Yesterday evening, when accelerating, there was a strange noise, something like a dent popping out of a metal can, metallic, quite loud, it was a single "thud". It was clearly audible, approximately at 80 km/h. Then there was an immediate loss of power, but I was still able to drive slowly. Every time I tried to accelerate, there's a kind of "whooshing" sound, almost like the noise of an internal fan, but obviously no power boost. (No extra power). If you keep your foot on the gas, you'll experience strong, unpleasant jolting.

What I would check first:
- Intercooler hose burst.
- Did the balloon burst?

Why isn't an error code detectable via OBD2? Either the software in the engine control unit is buggy, or the OBD2 tool is not working properly. In the event of a limp-home mode, an error entry should always be generated.

Best regards, Rainer.

Hello.

Thank you for the answers. I just found a problem area, namely:
the air hose that runs from the outlet of the LLK (Low-Pressure Coolant) to the AGR (Abgas Rückführung - Exhaust Gas Recirculation).
The hose runs vertically upwards to the AGR (Exhaust Gas Recirculation) valve. A sensor is located inside the hose, mounted on a coupling with hose clamps. One of the clamps is definitely rubbing against the alternator flat belt, and there are clear signs of wear on the belt itself. There is only about 5mm of clearance in that area when the engine is stationary.
However, I haven't yet figured out how the hose needs to be secured, or what the original method was.
was recorded.

The lower end of the hose feels too flexible, and unfortunately, you can't...
The flange for the low-level coolant sensor cannot be seen without removing a plastic trim piece that runs along the entire bottom front. As is unfortunately common with Ford, several of the screw heads are damaged.
so heavily rusted that I will probably have to drill them out/grind them off. Behind them, there is then...
The departure of the LLK. I'm curious to see what will be revealed there.

Best regards, Thomas.

Hello,

So, it was a completely rusted-through hose clamp at the outlet of the coolant reservoir, and the hose had slipped off the flange, which meant it could also rub against the serpentine belt.

The main challenge was dealing with several severely rusted screws that held the front, lower plastic cover in place. Removing them revealed even more rust underneath. But the machine is running again.

Greetings,
Thomas.

Thank you for the feedback!