06-12-2020, 01:45 PM
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#163
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pessimistic skeptic
Join Date: Apr 2016
Drives: '14 FR-S Monogram AT JRSC
Location: Upstate NY
Posts: 1,773
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Quote:
Originally Posted by dreamwonder
I will add a data point. May or may not be useful.
My car has a JRSC. About 6 or 8 months ago I have been getting p0172. LTFT will usually read -39ish when it happens. Attempts of solving it includes cleaning MAF and replacing MAF, which when performed will immediately drop LTFT back to 0ish. Also vented both breathers to atmosphere. But the code keeps coming back. Sometimes it takes days sometimes it takes weeks. So today when it happened again, I simply just disconnected the MAF connector and reconnected it and LTFT dropped back to 0ish!
My next step is when it happens again, I will just wiggle the connector a bit and see if it fixes the problem.
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Replace MAF extension cable!
I use this one
https://www.bmotorsports.com/shop/pr...d/3307%7B2%7D5
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