chasing an under load lean condition
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6th Gear
Joined: Jan 2022
Posts: 6
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chasing an under load lean condition
What is up with the non servicable PCV built under the valve cover in my 05 F250 with 5.4. ? Has that ever caused anybody the dreaded p0171 or p0174 ? My new Innova 5160 tells me my LT trims are not too bad except when I get around 18-22 grams per second MAF reading. Then they try to start sending a code. And another one sorry. Anybody had experience with that TSP for lean codes with or without driveability concerns ? They are to check for vacuum leaks etc and if ok reprogram the PCM
Hotshot
Joined: Feb 2015
Posts: 17,559
Likes: 1,081
From: Central Delaware
Welcome to FTE. If you take these questions to the "Super Duty/Heavy Duty" section, or the "performance, Engine and Troubleshooting" forums you will probably get the kinds of responses you are hoping for. Very few people will respond to those types of questions, here in the intro section.
Don't forget to check out you state chapter too. Va. has a great group of people.
BTW. Nice to see another Ranchero owner in here.
Don't forget to check out you state chapter too. Va. has a great group of people.
BTW. Nice to see another Ranchero owner in here.
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