My 01 XJR started having a rough idle. It has about 70K miles. The check engine light came on. Then, this morning, the car wouldn't start. When I jumped it using cables, it started, but still rough idle. Once I start driving it, the car seems fine...it is just a rough idle when I come to a stop.
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Re: My 01 Jaguar XJR started having a rough idle.
You may need a tune-up what you do is at night start the car with hood open and look at all the wires and see if they are sparking if so then tune the car up.start here frist,good luck hope this helps.
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P0443 - Evaporative Emission Control System Purge Control Valve Circuit ... P0443 trouble code symptoms could be just an malfunction indicator lamp (MIL) ... But, it's also possible to have a lean condition or a rough running engine if the ...Missing: jaguar xj6
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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.
Bought a use 03 last week for very cheep because it was idling rough, read in a forum about focus vacuum leaks and to use small burst of starting fluid to find the leak, spray around engine, if you hear the engine level off and run smooth in a particular spot for a few seconds the leak is in that general area, check the hose in that area, i found a large elbow on my pvc valve line was cracked in half, repaired with copper plumbing elbow fitting and silicone. now runs perfect. be very careful with the starting fluid short burst in well ventilated are.