real lean when you get up to high speeds, and lower even more when it heats up, so it would make sense. Replace your fuel filter. Do not mess with the mixture if it is running fine at all other speeds
...going into the fuel injection system, when you truck is cold it requires more fuel and less air, if this sensor has gone bad it would lean out your fuel mixture as if the vehicle was already
the 02 sensor on bank #1 switching slowly, causing a lean mixture. First check for a vacuum leak in anyone of the vacuum lines,which will cause this code. If all the lines are good, replace the sensor
...lean or rich or hunt for both. Could possibly be the temperature sending unit. They tell the computer what the coolant temp is. When the engine is cold, it will richen the air fuel mixture. IT could ...
...the computer to send signal to fuel injectors to allow rich mixture upon start up for warm up then leans out mixture as it
...lean the air fuel mixture. If cleaning it doesn't work, the sensors will probably need changing. P0300---- Random/multiple cylinder misfire P0316---- Cylinder misfire at start up---- first 100 ...
...out glow plugs this is almost always due to too lean a mixture, and going overly lean for even 10 seconds will do this-check for vacuum leaks and fuel pressure, most usual reasons for this to
...lean mixture. A lean mixture is quite often the result of a vacuum leak. I would check for a vacuum leak on the #3 cylinder intake runner as well as the intake manifold gasket. You can use spray carb ...
Question about 1999 Ranger SuperCab
...injector stuck open the cylinder would be rich and that should turn the check engine light on. It could have been a bad plug, or a lean mixture on that cylinder.How are the rest of the plugs
...be a different issue. Its possible the EGR valve is faulty and that could affect the fuel mixture but usually for the EGR to cause a lean mixture the EGR would cause a vac leak not fail to
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