Jk Wrangler No Or Low Heat Fix Blowing Cold Air Left Vent Heater Core

Jk Wrangler No Or Low Heat Fix Blowing Cold Air Left Vent Heater Core Jk wrangler no or low heat fixmy 2012 wrangler has had poor heat since i bought it a few months ago, the right vents would blow hotter and the left vent was. My 2014 jk had hot coolant behind glovebox, fan worked, ac worked, but no heat from any vent. walked through the instructions, and just lifted the actuator a small bit and wiggled. that freed the arm enough to start switching the blend door. mechanic wanted to replace the heater core, but i was not convinced based on my common sense.

Jeep Wrangler Heat Blowing Cold Air I have a 16 jku. at the end of last winter, i started noticing that my jeep was not warming up as hot as the previous year. this year, it just not starting to get cool enough that i need some heat, but i an still noticing that the heat is not hot enough. some quick snapshots of data is below. 1. ambient air outside is around 40 50. 1. the inlet and outlet of the core are on the passenger side, so the part of the core that's on the driver's side is furthest from the inlet and outlet. because of that there can be less flow on that side of the core, so it's more likely for any sediment to settle there and partially clog the core. 2. the outlet of the heater core box that. This will also cause the engine to run hotter and will affect the temperature level of the jeep’s heating system. however, even if there is no coolant smell, but an issue with the heater, it is a good idea to check these hoses for heat. if the engine is warm, then you should feel heat from the hoses as well. If the heat is blowing, but blowing cold, it has something to do with the coolant getting to the heater core, or the heater core itself. wrangler no heat: how the heater works. at the simplest level possible, the heater works by passing hot coolant from the engine into a tiny radiator called the heater core.