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Hi, I have a 2005 Jaguar VDP 4.2L. Very hard start. Have changed upper intake, Mass Air Sensor, Crank sensor, Fuel filter, some coils 3 & 5. Fuel pump is working. 180k miles

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  • Jaguar Master
  • 725 Answers

Chek fuel pressure test then do a compression test on all cylinders should be at least 150- 175 psi the early engines suffered from prematually worn out nicosil coated cylinder bores but your engine is poss way after that but 1st thing comes to mind is low compression, good luck

Posted on Dec 27, 2016

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Posted on Jan 02, 2017

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2005 jaguar VDP 4.0L. Very hard start. Have replaced map and crank sensor, egr valve and intake.


in what way is it hard to start does the engine turn over fast or slow, fast is low compression in the piston chambers slow can be the battery or the starter motor wearing out. ( starter motor has bushes to turn the motor these wear out and cannot turn the engine over fast enough to start.

Aug 10, 2017 | Jaguar Cars & Trucks

1 Answer

03 Nissan Altima showing codes P0304,P0102,P0154,P0113 what are they and how do i repair the problems.


Hi Chris.

p0304 = Number 4 Cylinder Misfire Detected

Faulty spark plug 4
Clogged or faulty fuel injector 4
Faulty ignition coil 4
Fuel injector 4 harness is open or shorted
Fuel injector 4 circuit poor electrical connection
Ignition coil 4 harness is open or shorted
Ignition coil 4 circuit poor electrical connection
Insufficient cylinder 4 compression
Incorrect fuel pressure
Intake air leak

The P0304 code means that the cylinder 4 is misfiring or is randomly misfiring. Start by checking for intake leaks an if no leaks are found the next step is to replace the spark plugs on cylinder 4.


p0102 = Mass or Volume Air Flow Circuit Low Input

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.


p0154 = O2 Sensor Circuit No Activity Detected Sensor 1 Bank 2

Faulty Front Heated Oxygen Sensor Bank 2
Front Heated Oxygen Sensor Bank 2 harness is open or shorted
Front Heated Oxygen Sensor Bank 2 circuit poor electrical connection
Inappropriate fuel pressure
Faulty fuel injectors
Intake air leaks may be faulty
Exhaust gas leaks

Replacing the Front Heated Oxygen Sensor Bank 2 usually takes care of the problem.


p0113 = Intake Air Temperature Sensor Circuit High

Faulty Intake Air Temperature (IAT) sensor
Dirty air filter
Intake Air Temperature (IAT) sensor harness is open or shorted
Intake Air Temperature (IAT) sensor circuit poor electrical connection

The Intake Air Temperature (IAT) sensor is built into mass air flow sensor or in some vehicles mounted to the air filter duct housing. The sensor detects intake air temperature and transmits a signal to the Engine Control Module (ECM).The temperature sensing unit uses a thermistor which is sensitive to the change in temperature. Electrical resistance of the thermistor decreases in response to the temperature rise. The Intake Air Temperature signal is used as an input for various systems in the vehicle.



Hope this helps
FYT

http://www.autocodes.com/make/nissan

Mar 26, 2017 | Nissan Cars & Trucks

1 Answer

Hi, I have a 2005 Mitsubishi Lancer Wagon, 4G93. It wont rev over 4000. It has no error codes, I changed the Mass Air Flow intake sensor and no change.


If your in park or neutral, the PCM stops the engine from revving up to high. If your driving, then the fuel filter is clogged up.

Dec 06, 2015 | Mitsubishi Cars & Trucks

2 Answers

2005 chevy malibu classic 2.2 L turns over and is getting fuel but won't start.


sounds like crank sensor, but unplug mass air flow sensor on air filter tube see if it changes condition

Mar 05, 2015 | 2005 Chevrolet Malibu

3 Answers

Engine code p110


P0303 Code - Cylinder #3 Misfire
P0110 DTC - IAT Circuit Malfunction
P2195 O2 Sensor Signal Biased/Stuck Lean (Bank 1 Sensor 1) Code
Potential causes of a P2195 code include:
p2195
p219521
  • Oxygen (O2) or A/F ratio sensor or sensor heater malfunction
  • Open or short in O2 sensor circuit (wiring, harness)
  • Fuel pressure or fuel injector problem
  • Faulty PCM
  • Intake air or engine vacuum leaks
  • Faulty fuel injector(s)
  • Fuel pressure too high or too low
  • PCV system leak/fault
  • A/F sensor relay faulty
  • MAF sensor malfunction
  • ECT sensor malfunction
  • Fuel pressure too low
  • Fuel leak
  • Air suction in air intake system
  • A code P0303 may mean that one or more of the following has happened:
  • Faulty spark plug or wire
  • Faulty coil (pack)
  • Faulty oxygen sensor(s)
  • Faulty fuel injector
  • Burned exhaust valve
  • Faulty catalytic converter(s)
  • Running out of fuel
  • Poor compression
  • Defective computer
  • Potential causes of the P0110 DTC include:

  • po110
    • IAT sensor shifted out of airflow
    • Bad IAT sensor
    • Shorted to ground or open on signal circuit to IAT
    • Open in ground circuit to IAT
    • Poor connection at IAT (backed out terminals, broken connector locks, etc.)
    • Bad PCM

Sep 25, 2014 | 2003 Ford Focus

2 Answers

1998 GMC Sierra 2500 5.7L hard cold starts last month, now won't start cold w/o a little carb cleaner in intake. Codes for oxy sensors, mass air sensor and crank/cam position. Drove today, no power just...


starting definately has a lot to do with the crank/cam position sensors, but it wouldnt have nothing to do with hot or cold weather, oxygen sensor will make the vehicle run too rich if its out, you will smell fuel very strong out the exhaust, that could make it run sluggish also, and usually if the mass air flow sensor goes out the vehicle wont start at all...

Nov 27, 2010 | 1998 GMC Sierra

1 Answer

Hi, I have a 2005 xjr and it pinks at about 4000 rpm when accelerating hard, I always use high grade fuel, just had new plugs, air filter, fuel filter. but it still does it. it runs smoothly poodling...


The pinking is due to either lean burn, high temperatures or overly advanced timing. If the mass air sensor is dirty then it may underestimate the volume of air entering the engine and therefore call on shorter injection cycles meaning less fuel = lean mix A faulty or slightly under-performing exhaust gas recirculation system would reduce the amount of inert exhaust gas from entering the combustion process and this will cause a high temperature lean burn situation. An under-performing crank sensor may yield erroneous timing signals to the ECU giving rise to an excessively advanced ignition causing the pinking. There may be error codes logged by the ECU which would help in the diagnosis.

Sep 12, 2010 | 2005 Jaguar Xjr

2 Answers

1998 ford mustang 3.8 v6 starting problems.


it's your upper intake manifold gasket. it has a crack in it and needs to be replaced. your getting to much air and not enough gas. mine did the same thing.

Feb 02, 2010 | 1998 Ford Mustang

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

X TYPE YELLOW WARNING LIGHT


I recently had the same code come up when my car failed to start in the mornings. It also said that the crank sensor had failed. Having changed the sensor and still not starting it went back to the garage. According to a Jag enineer the ECU will fail to register if it gets less than 12v from the battery, this will also throw up several codes for the diagostics. Solution, change the battery. Problem solved.

Jul 22, 2008 | 2002 Jaguar X-Type

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