HI, i have a 2001 Jaguar S-type 4.0. When the engine is cold it runs smooth,But when its been driven for a while it seems likethe tansmisssion acts up during hard acceleration.. Its almost as though it not enough fluid in the transmission.No Check Engine Light or nothing. I want to check ****** fluid but cant find a dipstick help!!

run the fault codes
check for vacuum leaks on all vacuum hoses
check fuel pressure
use quality injector cleaner

It probably got overfilled at some point. There's a max line on the reservoir that you shouldn't fill it over. Coolant expands as it heats up so if there's too much in the system, it's normal for it to overflow.

If a whole side has failed, as much as I hate to say it, the ECM/PCM has failed. More specifically the "drivers" for the injectors and should also fire spark. Let me know if you need anything else.

engine will not rev above 3000rmp in neutral or park its a safety feature ,as for the driving problems i honestly havent a clue ,but if its a 2001 model then maybe the ford software will read this car ,after all it is a ford or was till recently.Wondering if something stupid is wrong like the plug leads ??or the wrong grade of spark plugs

Jaguar runs there cylinder numbering different then the north american engines. They go from 1-2-3-4- front to back and bank 1 and bank 2. Bank one is on the passenger side and bank 2 is on the drivers side. This is the s type DOHC V8 (AJ28) engine for your car.

All Jaguar engines are CHAIN driven

Hi m just drain refill  turn the heater to full hot run engine or drive for a couple of miles let it cool and top up   never had any problums with a s type      D

According to Jaguar, the engine has a heater fitted inside the engine which automaticly switches on when you start the engine and switches of at a pre-determaned time, this expells steam from underneath the car, and considered as normal.
Therf are other answers in the Jaguar forum, take a look there. I have the same effect with my X-Type.

does it ever shut off? there is a temperture switch that might need replacing.good luck

I have had this problem on and off with my '02 X-type. I have taken it to a place where they will read and interpret the error codes for free. Every time it came back with a evap leak code. We had the dealer look the entire car over twice, but they could not find anything wrong. So we asked him if we should be worried. His response: "Nothing to worry about as long as the engine does not cut out or does into "limp home" mode." What it comes down to is that some of the sensors on this car are a little too sensitive. Even something as simple as hitting a bump can cause this code to pop up. There seem to be several possible solutions:

1: replace gas tank cap
2: replace air filter located behind the golve compartment
3: Open the hood. Remove the plastic cover from the engine block. There will be several hoses running between the engine block and the plastic over you just removed. Check those for leaks. (They get hot from being so close to the engine block and the rubber gets brittle).
4: Have the fuel nozzles cleaned/replaced
5: Clean out the air intake

Essentially I have not done any of this because my engine is running lean (meaning it is using less gas than it should). Seeing as though it is running fine, I can't see paying what the dealer wants per hour to look for something they have looked for twice already and didn't find.

I'd say try any of the above, but I cannot guarantee a solution. I'm sorry.

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BelgianAlien.