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P0171 JAGUAR - System Too Lean ENGINE CYLINDER Bank 1 (only "V" engines (V6,V8 etc.) have more than one bank of cylinders.
Possible causes- Intake air leaks - Faulty front heated oxygen sensor - Ignition misfiring - Faulty fuel injectors - Exhaust gas leaks - Incorrect fuel pressure - Lack of fuel - Faulty Mass Air Flow (MAF) sensor - Incorrect Positive Crankcase Ventilation (PCV) hose connection Tech notes If the P0171 is combined with the P0174 code, it's very likely that the problem is caused by an intake leak. If there are no intake leaks, the next step is to replaced the air filter and clean the air flow meter. If the problem persist the front oxygen (O2) sensor may need to be replaced.
if you didn't just change the wipers? then you're wiper motor is wasted and you need a new one...can you maunually shut the switch off when the wipers are IN the right rest spot? if so just do that for now till you replace the wiper motor
Its issue with fuel filter.Have you also replaced the fuel filter too.If its blocked then it can also cause this problem.Also in some cases its seen that new fuel pump comes out faulty.Was it original fuel pump or aftermarket fuel pump.Get the fuel pressure checked.If the pressure is low,then it can be issue with the new fuel pump.------------For more help Click the link below:-----http://repairhelpcenter.blogspot.in/2012/05/jaguar-fuel-pump-problems.html -------------This will help.Thanks.
A failed fuel injector will do it also. Compare the injector coil resistance with that of another injector. If it's open or significantly different, the injector coil is bad. The injector could also have a mechanical problem such as a clog.
PO171 is fuel system lean, bank 1. If you haven't changed fuel filter, I would start there. It should be in line back by tank. Follow line from tank. If you have fuel pressure tested and it's low, try filter and see if pressure increases. If no increase, and pressure still low, it sounds like a fuel pump needs replacement.
CODE PO171 FUEL TRIM BANK 1 MIXTURE TOO LEAN. POSSIBLES CAUSES, INTAKE AIR LEAKS, AIR FLOW SENSOR 1, CLOGGED FUEL INJECTOR, EXHAUST GAS LEAKS,INCORRECT FUEL PRESSURE CLOGGED FUEL FILTER, LACK OF FUEL FAULTY FUEL PUMP,FAULTY MASS AIR FLOW SENSOR,INCORRECT PCV HOSE CONNECTION.
To get to the cabin air filter on an XK8 or XKR, you have to do the following steps (I know these steps sound ridiculous...as in many cars there is just a simple cover in the engine compartment... but...): The air filter is under the black plastic cowl or plenum that is just under the windshield wiper blade connectors. To get to that, you must 1. carefully lift off the plastic covers that reveal screw heads. Remove the screws. 2. lift off the plastic covers that are on the top of each windshield wiper connector - under the cover you will then see a nut or bolt that has to be unscrewed. 3. Using a small puller (the puller that lifts off battery terminals works for this) lift off each windshield wiper and disconnect the rubber hose from each. 3. lift the car's front hood, and remove the plastic cowling (you also have to lift the side rubber runners and a rubber strap from each side that holds up the rubber drain hoses). Once you remove that plastic cowling, you will see the air filter plenum at the back of the engine area. The air filter should come vertically out of that. (This air filter does not exist on my 2000 and earlier editions...I am not sure what year Jaguar installed them.) Full instructions are on the Jaguar JTIS CD which you should obtain...look online for that.
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