When the car is turned on.It has a rough idle.Sounds like its gonna shut off.Restricted performance.When i drive it around the block and then stop at stop sign.The car shuts off.What can be the problem?
I own an '01 S-Type and have had to many problems to list, however 3 months ago mine started riding rough, the check engine light actually started blinking and it shook pretty bad especially at stop lights (although it didn't shut off) I drove it straight to the shop and they said it was a bad ignition coil (coil #4) - $135 total and it ran fine. 2 months later coil #5 went. I was advised that if you take it to the dealer they will replace all 6 ignition coils at once charging you over $1,000. They are only about $60 a part stores. Good Luck I'm getting rid of my Jag this week! What a pain in the neck beauty!
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sounds like classic symptoms of air leaking into engine after air meter, check air hoses to engine then when engine at idle - spray detector spray around the inlet manifold and if this is leaking at its gasket (very common problem on V6 at the rear of the engine) the engine note will change. see earlier posts with similar problems.
hope this helps - good luck.
Rent a scanner, read out any code(s), and pursue to repairs. It may be as simple as bad spark plugs and wiring, or worse, fuel problems from the injectors back to the fuel tank. A worn O2 sensor can cause improper fuel/air problems.
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.
o2 sensors often cause a rough idle at stand still. Previously my xj8 had crank case ventilation (pvc valve essentially) issues that caused the check engine w/ restricted performance. I noticed a severe drop in gas mileage as well. Jaguar dealer fixed my problems in a few hours and it was surprisingly cheap. Its worth taking it to advanced or auto zone to see what the computer says. Then decide if you want to shell out for a dealer fix or if you can tackle it yourself. BTW, just to justify myself this is my third jaguar. I have a '94 xj6 with a chevy 350 inside it, previously owned a 95 XJ6 and currently have the xj8. They are wonderful cars if you can put up with their rough times.