How do you get the jaguar out restricted performanc mode after repairs

Xj8 vdp psds are the correct type

not advisable since limp mode is designed to protect drive train and occupants and can actually shut down

For the money you spent on another computer, you could have brought your car to a qualified mechanic and had the problem correctly diagnosed and repaired. 'Restricted performance' meant the computer saw something wrong in the engine, and restricted the performance to keep from destroying the engine. You killed the messenger and still have the same problem.

the restricted performance is the limp mode operating
the next step is to have the fault codes read to find the area of the fault ( engine or transmission or both) and have the fault rectified before more serious damage is done

Having a restoration shop and running several newer Jaguars I have seen similar situations. Intermittent multiple errors such as these can be caused by a low battery (or corroded connections) that "fool the computers". Also had a '99 XJ8 VDP have exactly the same issues over several months. Issue was a manufacturing fault in the sensors on the throttle body that caused the "limp home" mode - usually in stop and go traffic. Jaguar had an inspection and recall on the throttle bodies but that vehicle had gone through 3 different Jaguar dealers for service and none looked at TSB/Recall or performed the necessary checks on the throttle body. Tried cleaning the throttle several times (per Jaguar TSBs) but no change. Had to replace throttle body & problem solved (over 30,000 miles since then). Recommend making sure all air connections to throttle are clean and open and cleaning the throttle area to see if that helps.

On newer Jaguars (and other Al bodied cars) similar problems occur when the "ground" connections to the body become poor (usually through corrosion but sometimes through collisions). Connections may look perfectly normal but have high resistance. Careful when working with the connections - the posts are usually very loosely fastened to the bodies. The engine quit on a 2005 XJ8 VDP when I turned the wipers on (fortunately I was driving slow in a parking lot) because one of the forward bulkhead ground connections was corroded (looked normal but separated from body when removing the wires to clean them).

Also there occur occasional funny intermittent issues with all newer Jags that seem to be untraceable and non-reproducable computer "glitches".Good luck.

the car is in restricted mode...you must have the ecm codes read to see why its in restricted performance mode..it sounds like a vacuum leak which is causing a knock or misfire

Vehicle is in a restricted performance mode, limits the engine revs to below 3,000. Need to scan the vehicle and see what codes are present. could be a problem with the throttle body.

Have a 1989 Jaguar VDP the car crank and sounds as if it want to turn over but doesn't . What is the problem and what solution can you give me to fix my car. Thank U please respond

Hi, "restricted performance" is another name for "Limp Home Mode." You have a bad sensor or wire that is preventing proper operation of the fuel injection system. Recommend you get a scan of the OBD2 connection to extract trouble codes. If you live in the US, you can get a free scan at your local parts chain. Send us the trouble code for repair advice.
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You need to take to Jaguar technician to have Mil lamp codes read and cured the restricted performance is the engine protecting itself as there is a fault in the management system,usually fuel system related,It has gone into "Limp Home" mode to try to limit the damage done untill the fault is cured