Question about Cars & Trucks
Meter reads p0107
PO 107 --Manifold Absolute Pressure Circuit Low Input
Lean Right bank --has to do with an Oxygen Sensor or
other things causing an O2 Code
I suggest you have a repair shop properly diagnose &
find out what the real issues are
Posted on Dec 09, 2012
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Posted on Jan 02, 2017
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...
Posted on May 08, 2009
A code P0171 may mean that one or more of the following has happened:
Posted on Jul 15, 2009
SOURCE: OBD2 METER READS ENGINE TOO LEAN
Lean running condition
A lean running condition means that the air/fuel mixture is unbalanced, and that the engine is getting either too much air, not enough fuel, or a combination of both. Optimally, this ratio should be around 14.7 parts air to 1 part fuel by mass, at low or cruising loads. This ratio is known as stoichiometric for gasoline. Ideally, at WOT, you should aim between 11.5:1 (Rich best torque at WOT) and 13.3:1 (Lean best torque at WOT).
Running lean, like having your spark timing too advanced, creates much more heat during the combustion process. This can lead to piston seizure, a hole in the piston, melted spark plug electrode or other complications due to overheating. You will not be producing peak power, and your exhaust will also emit more oxides of nitrogen, arguably one of the worst byproducts of gasoline combustion for our environment.
Common causes of a lean running condition are an improperly tuned carburetor, clogged fuel line, clogged fuel filter, or a vacuum leak.
Preforming a plug chop is a good way to find out if your engine is running too lean, as you will see a powdery white residue on your spark plug in the presence of a lean condition.
On the other end of the spectrum, richer ratios will also cause lost power, however this will most likely be accompanied by black smoke (around the 9:1 fuel/air ratio area), and fouled spark plugs.
Posted on May 30, 2010
Testimonial: "THANK YOU SO MUCH ,MY MECHANIC FEELS ITS A HEAD LEAK OR A HOSE CLAMP NOT TIGHTENED.HOWEVER I FEEL ITS A FUEL FILTER.THIS WAS VERY HELPFULL.THANK YOU"
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