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What should I do with all these troubleshooting codes?

  

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here all the codes is troubleshoots running lean

2004 ford explorer 4.6 liter v8

Po155

Po443,po135,po161,po141,po403 and po446 all codes pop up same time even tho I change parts nothings works  codes still the same I can’t get mechanic to get the problem down seeing if you can help me thank you!

 


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Posted by: @tvvaldo500

all codes pop up same time even tho I change parts nothings works

What parts have you changed? Have you gone through the possible causes and troubleshooting procedures documented for those codes? It's possible for a single failure to cause a cascade of otherwise unrelated fault codes.


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