Question about 2002 Jaguar X-Type

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2002 jaguar x is running rough dying at stops. Check engine light is on and codes say sensor and fuel is too lean. Replaced the mass air flow valve this morning and it did not help. Any ideas?

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  • Jaguar Master
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Either the fuel filter is restricted,or the fuel pump is weak,and going out,check the fuel filter,see if it is restricted,if not,have the fuel pump pressure checked.

Posted on Jan 31, 2010

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My 2002 grand prix was running rough. I plugged my code reader in and the mass air flow sensor came up. I changed that.Then the o2 sensor came up and I changed that. misfire on multiple cylinders came


Check for a restriction of some kind, fuel--air--exhaust. Use a gage and check fuel pressure. What was the actual 02 sensor code? Can you tell if the system is running rich or lean? In park, will the engine rev normally?

You don't think the tranny has an issue?

Dec 15, 2014 | 2002 Pontiac Grand Prix

3 Answers

2003 Nissan Altima 2.5L Service Engine Soon Light is on, Auto Zone says codes are for MAF and O2 Sensors. Car hard to start after driving a while but when starts appears to run smooth. Auto Zone thi


ok lets start with the codes they say your getting. P??? which 1's and how many. there are few o2 sensors, are they next to the Exhaust next to the converter? MASS AIR FLOW -MAF use this, for now i am guessing, until i see the correct codes your are getting. this could be the 1 you may have below, please read it........
  • P0103
    Mass Air Flow Sensor Circuit High Input
  • Possible causes
  • Faulty mass air flow sensor
    - Intake air leaks
    - Dirty mass air flow sensor
    - Dirty mass air filter
    - Mass air flow sensor harness is open or shorted
    - Mass air flow sensor circuit poor electrical connection
  • Before replacing the mass air flow sensor, try replacing the air filter and cleaning the air flow sensor with low compress air or mass air flow sensor cleaner. Reset code and drive vehicle. If the code comes back, it may be necessary to replaced the mass air flow sensor.
  • possible symptoms Engine Light ON (or Service Engine Soon Warning Light)
    - Engine stall
    - Engine running rough
    - Excessive fuel consumption
    - Excessive smoke
  • the code is generated when An excessively high voltage from the sensor is sent to Engine Control Module (ECM).
2003 NISSAN Altima Sedan OBDII Codes List

Oct 22, 2014 | 2003 Nissan Altima

1 Answer

I went to go check my gen 3 wh Holden statesman as I was having problems with it sounding like it was about to die out, the motor was running rough the mechanic scanned it and it showed it was the O2...


O2 sensors reads the amount of left over fuel in the exhaust and converts to a voltage signal so when voltage is around .800mv this is a rich condition and computer is commanding less fuel and .200mv is a lean condition computer is command more fuel. for rich condition problems check the following components. Fuel pressure regulator, leaking injectors, mass air flow meter, engine coolant temp sensor, map sensor.for a lean condition check engine vacuum leaks, exhaust leaks, air injection, map sensor, mass air flow sensor,fuel pressure regulator, fuel filter,injection

Apr 30, 2014 | Cars & Trucks

1 Answer

Engine light flashing and engine running very rough


HAVE VECHICLE CODE SCAN AT ANY AUTO PARTS FOR FREE SOUND LIKE FAULTY EGR VALVE.SEVERE CYLINDER MISFIRE BAD SPARK PLUGS OR BAD COILS. COULD HAVE LEAN FUEL MISFIRE CLOGGED FUEL FILTER WEAK FUEL PUMP, FAULTY MASS AIR FLOW SENSOR.

Aug 19, 2011 | 2003 Volkswagen Passat

1 Answer

Vehicle running rough initial code misfire cyl 2 replaced plugs and coil pack still rough recheck codes and got P0172/P11341/P1151 O2 or mass air flow sensor ?


May be fuel injector on Number two cylinder, normally if it's the mass air flow it would affect all cylinders. You may have a sticking EGR valve or a PUrge canister valve stuck open, if you need to know how to check this let me know and I will give you more instructions. I also need to know if it's the 4 or 6 cylinder engine and if it has a automatic or standard shift I need this to help diagnose the problem more. The other codes is for the 02 sensor but you need to check the other stuff first before you mess with the 02 sensor. Thanks for using fixya

Jul 01, 2010 | 2002 Ford Taurus

2 Answers

2005 Pt Cruiser idles rough at stop lights/ poor gas mileage.


i hav a 2003 pt cruiser 2.2 crd touring it wont go over 3000 revs engine light cums on. error code p0243 i hav replaced wastegate solenoids cleaned egr valve cud it be the mass air flow sensor that has a problem thanx

Sep 18, 2009 | 2005 Chrysler PT Cruiser

1 Answer

Engine light on 3 codes in system


The lean running codes are related to the p-1000 code...

Running lean on bank 1 and bank 2 means your oxygen sensors sense too much oxygen in your exhaust flow. This means either your engine is getting unmetered air (air that the engine does not know is coming in, therefore does not send fuel to compensate for...) (air that your mass air flow sensor does not see). You could have either a bad mass air flow (MAF) sensor (in the intake piping after the filter; this sensor tells your engine how much air it's taking in, so it can send the right amount of fuel through the injectors to properly burn with the air available with as little emissions as possible), or you could also have a cracked/broken intake piping after this sensor which lets air in the intake that the sensor does not measure... A large vacuum leak could also let unmetered air in the engine.

Or... Another possibility here would be low fuel pressure (bad fuel pump, bad fuel pressure regulator, fuel leak), as not enough fuel for the air would also cause the same lean condition.

It could be that some oxygen sensors are bad...

These conditions are hard to pinpoint exactly unless you have a scanner that can read sensor data (MAF Flow, fuel pressure, oxygen sensor values)...

The first thing I'd do would be to check for cracks or damage in the intake piping... If there is none, then it might be a low fuel pressure issue, or sensor problems...

May 08, 2009 | 2003 Jaguar X-Type

2 Answers

2002 grand prix runs rough,dies service engine


sounds like you have a vacuum leak, check all the vacuum hoses and replace any broken or kinked ones, also check around the intake manifold gasket for leaks. any air leaks after the air flow meter creates 'un-metered' air which inturn will make the car run rough and stall, hope this helps

Apr 04, 2009 | 2002 Pontiac Grand Prix

1 Answer

I have a 1999 oldsmobile intrigue that is misting a lot. It idels rough, and runs rough. I can still take off it is a little slow, but I can still go pretty fast, but it still mist at the high speeds...


fuel pressure regulator on the fuel rail is probably it or the egr valve is stuck open allowing burnt fuel to flood the intake, im leaning towards the fuel pressure regulator because the o2sensor is probably reading rich or if its reading lean then i would choose the egr valve . good luck

Jul 06, 2008 | 1999 Oldsmobile Intrigue

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