exuast smell like gas codes p1194,p1192,p1191

1995 JAGUAR XJ6
216,000 MILES
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DILLONJ177
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My jags exuast smell strong with gas like its running rich and the gas mileage is horrible I scanned it and I got the 3 codes p1194,p1192,p1191 I know its a o2 sensor but witch one pre or post cat?


Thanks in advace
May 1, 2012 at 2:58 AM
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RASMATAZ
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Probable causes of an engine running rich are as follows:

1.Excessive fuel pressure can be cause by restricted fuel return line

2.Defective Oxygen Sensors.

3.Leaking injectors and fuel pressure regulator.

4.Coolant temperature sensor out of calibration.

5.Restricted air intake system.


May 1, 2012 at 3:56 AM