VEMS dirty 1.8t IAT sensor symptoms
Posted: Mon Apr 17, 2017 12:38 pm
So I wanted to share this scenario which I had previously attributed to my Hobbes switch activating the w/m injection at an inopportune time during part-throttle acceleration.
I believe that part of the problem comes from me having possibly slightly too small a k&n filter on the holset inlet due to space constraints. I guess I should've cleaned it last month when I thought my 2nd IAT sensor was breaking down in front of my eyes.
Symptoms were, when intake temps reached the 25 to 30 C area, the IAT sensor would read dramatic swings between 10 and 30 C several times per second. The result was strangely a lean fueling event that caused a lack of power. I cleaned the first sensor last month that showed the symptoms before installing it Saturday. The sensor that came out Saturday was showing the same symptoms of course.
After I changed the sensor out I decided to clean the nasty k&n for good measure. Problem solved lol. Glad it wasn't my engine prematurely eating those IAT sensors though!
I believe that part of the problem comes from me having possibly slightly too small a k&n filter on the holset inlet due to space constraints. I guess I should've cleaned it last month when I thought my 2nd IAT sensor was breaking down in front of my eyes.
Symptoms were, when intake temps reached the 25 to 30 C area, the IAT sensor would read dramatic swings between 10 and 30 C several times per second. The result was strangely a lean fueling event that caused a lack of power. I cleaned the first sensor last month that showed the symptoms before installing it Saturday. The sensor that came out Saturday was showing the same symptoms of course.
After I changed the sensor out I decided to clean the nasty k&n for good measure. Problem solved lol. Glad it wasn't my engine prematurely eating those IAT sensors though!
