Question about Cars & Trucks
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.
Posted on Jan 11, 2013
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Posted on Jan 02, 2017
I had the same problem on my 1998 XJ8. My dealer told me it was the Mass Airflow Meter, which needed replacing to the tune of around $500. After a second opinion at my local Jag mechanic, it turned out to be a hose that was broken on the lower part of the front of the engine. Check the vacuum hoses for breaks or loose fittings.
Posted on Mar 16, 2009
SOURCE: Is it safe to drive my car
Restricted performace means the power has been cut for some reason, its probably safe to drive but needs to be serviced. Check your manual for possible causes of the light being on to determine your next course of action..
Posted on Aug 24, 2009
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.
Posted on Mar 01, 2010
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Ignition coils can cause these problems, and a code scanner can tell you which one or more that are bad. If there are more than one that's bad its cheaper to buy a set.
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