Why I have this massage in my car 750BMW cornering ability restricted.

Hi Susan:
Since this is the Cars & Trucks section, I can only assume that you must be using the massager to polish your vehicles. Unfortunately, massagers were not intended for continuous use so the wiring has probably overheated and shorted out.
Sorry to bring you the bad news.

with a car like that i'd go straight to a beamer garage !

Make model and the details of the problem might help.

You need to get an ODB2 analyzer and read the codes in the main computer of the engine. Those codes will help you get the correct parts to improve the performance of your Jag.

Could be a long list of things that would affect the cooling ability of the engine, or things that produce heat.
A restriction in the exhaust, a restriction in the coolant flow thru the engine or radiator, even air flow thru the radiator.

Vague information, but generally it is caused by low fuel pressure, plugged fuel filter, or restricted exhaust. does it have a dead miss? A check engine light? Check connectors to the Mass Air Flow in the intake stream, and also look for a vacuum leak that might be throwing off the engine computer's ability to adjust.

Check out this link, the anti theft has the ability to block/stop fuel from reaching injectors. http://vatspasslockpasskeysecurityhelp.yolasite.com/

I had the same problem. Restricted performance and running rough at 3000 RPM. I have an OBDII code reader and found that the problem was in the air mass flow sensor, which is just after the air filter. I pulled this out and found it was dirty and had butterfly wings in it. The last shop where I had the oil changed replaced the filter for me but put in the wrong size. Close but no cigar. Bought some *** Flow Sensor cleaner at auto store and fixed the problem. Get an OBDII reader with the ability to erase the codes. Comes in real handy.

yes change the pump.