Owners of 2020-2021 Buick Encore GX vehicles equipped with a 1.3L engine may comment that the passenger side heating performance is lower than that of the driver side.
Owners of 2020-2021 Buick Encore GX vehicles equipped with a 1.3L engine may comment that the passenger side heating performance is lower than that of the driver side. GDS2 Engine Cooling and HVAC Data shows that the temperature difference between heater inlet (ECT sensor three) and heater outlet (ECT sensor four) is over 86 degrees Fahrenheit with the engine at normal temperature. Internal blockage of the exhaust manifold outlet pipe can cause this problem.
1. Connect GDS2 into the ALDS connector. Select Engine Cooling and HVAC Data menu.
2. Check if the temperature difference between ECT sensor three and ECT sensor four is over 86 degrees Fahrenheit (30 degrees C) with the engine warmed up.
3. If you find this difference in temperature, check for internal pipe blockage using a general endoscope.
4. If the pipe is blocked, replace the pipe. Re-check sensor-to-sensor temperature difference.
Mike Mavrigian has written thousands of automotive technical magazine articles involving a variety ofspecialties, from engine building to wheel alignment, and has authored more than a dozen books that crisscross the automotive spectrum. Mike operates Birchwood Automotive, an Ohio shop that builds custom engines and performs vintage vehicle restorations. The shop also features a professional photo studio to document projects and to create images for articles and books.
