...O2 sensors to go bad. I strongly suspect they are reading what is actually happening,the engine is running lean. Probably from some un-metered air getting into the engine either from a vacuum leak or ...
...o2 sensors do not need to be cleaned, they live in soot every day and they like it that way. They usually outlive the vehicle except in cases of over-adding STP type cleaners and using bad gas. They ...
Question about Ford Windstar
...O2) sensor may need to be replaced. U need to replace the plenium gaskets on the bottom( 6 in all) and the isolator bolts that hold the plenium down to intake. purchase new designed parts that is the ...
...bad fuel pump could have leaned out truck causing o2 codes before pump quit hit the center of bottom of gas tank if it starts it definatelty needs a pump but have someone turn key while you are under ...
...O2 sencor had gone bad or the signal has and causing multiple mis fire. according to your codes. PO171 System too Lean (Bank 1 PO174 System too Lean (Bank 2) PO300 Random/Multiple Cylinder Misfire ...
o2 sensor is bad. check for vacuum leaks first. p0103 is -- mass air flow high curcuit input ( maf ). but before buying one because they are about 100 and some dollars. clean maf sensor first this may
bad.Replace it.This will cause a hard start when warm.The pressure sensor for the Evap.system is on top of the fuel tank.The po171 could be the fuel filter or o2 sensor.You need a scan tool to monitor
Question about Ford Cars & Trucks
...and are available online free. The O2 sensor may be bad and is easily replaced. copy and paste https://www.yourmechanic.com/article/p0171-obd-ii-trouble-code-system-too-lean-bank-1-by-andrew-quinn
...bad O2s, but I recommend some diagnostic testing to prove it before spending the mega-bucks that Nissan gets for their O2 sensors. hi my name is nizam , i have 199 nissan maxima i just change 02 ...
...bad mass air flow sensor which could cause the computer to try and compensate air/fuel mixture. O2 sensors are rather pricey and should be checked by a scanner. They should have a minimum and maximum ...
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