stevet8754 Posted October 2, 2012 Report Share Posted October 2, 2012 recently i have had 3 error codes pop up left back running lean right bank running lean mass air flow sensor i have replaced my mass air flow sensor 3 times so far and the code goes away for about a week ( after clearing the codes) and then al 3 seem to pop back up almost at the same time. i dont feel a difference in the performance or the functionality of the truck. but its rather annoying to have the engine light on all the time. any thoughts?? maybe the mass air flow sensor cable harness has a break in the wire?. Quote Link to comment Share on other sites More sharing options...
Blown 346 Posted October 2, 2012 Report Share Posted October 2, 2012 There are a few reasons you can get lean codes. Bad MAF O2 sensors Fuel system problems Computer malfunction Vacuum leaks When was the last time you replaced the fuel filter? Mainly a lean code is due to a Bad MAF which you already replaced, it could be a bad O2 sensor that isnt reading right anymore. Quote Link to comment Share on other sites More sharing options...
stevet8754 Posted October 2, 2012 Author Report Share Posted October 2, 2012 personally i havnt replaced the fuel filter or O2 sensors. ive had the truck for ~3 years so far. stock exhaust and just a cold air intake. Quote Link to comment Share on other sites More sharing options...
Krambo Posted October 2, 2012 Report Share Posted October 2, 2012 Washington Nj??? Is that Warren County? If so, I could find some time to throw your truck on my laptop and run a few logs for you. It will give you a bunch of data that can pinpoint your issue. Shoot me a PM (private message) and we can talk. How many miles on her? Quote Link to comment Share on other sites More sharing options...
stevet8754 Posted October 4, 2012 Author Report Share Posted October 4, 2012 sounds good. PM sent.. appreciate the help!. Quote Link to comment Share on other sites More sharing options...
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