Posted by MarkB_MI on August 17, 2022 at 04:30:06 from (174.211.37.60):
A couple of days before we were planning to take a trip, my 2017 Duramax lit up its Check Engine light. No time to take it to the dealer, so I pulled out my OBDLink scanner to see what I could find. The code P026D was stored, so I googled that. I quickly found a bunch of posts saying to clean the TMAP sensor. Once I figured out where the TMAP sensor is (it's right on top of the turbo-to-intercooler manifold), I pulled it out and it was totally plugged with soot. I cleaned it up, re-installed it and cleared the code. 2400 miles later, after towing the camper to Maine and back, no check engine light.
Apparently this is a known problem with the L5P engine; soot from the EGR fouls out the sensor. You can buy an aftermarket spacer that supposedly fixes the problem, but it's so easy to clean the sensor I'll just do that every 20K or so. (I have about 80K on my truck.)
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Today's Featured Article - Hydraulics - Cylinder Anatomy - by Curtis von Fange. Let’s make one more addition to our series on hydraulics. I’ve noticed a few questions in the comment section that could pertain to hydraulic cylinders so I thought we could take a short look at this real workhorse of the circuit. Cylinders are the reason for the hydraulic circuit. They take the fluid power delivered from the pump and magically change it into mechanical power. There are many types of cylinders that one might run across on a farm scenario. Each one could take a chapter in
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