Jeep Wrangler Fan Switch Problems

When your jeep reaches its optimal temperature its thermostat opens and allows that coolant from the cooling system to flow through the engine removing heat and sending it into the radiator then into the heater core which ultimately distributes it into the jeep.

Jeep wrangler fan switch problems.

There is a serious product defect in the fan motor switch resister assembly in my 2001 jeep wrangler. Normal use of fan speed control switch of 1999 jeep wrangler. Without it the engine can reach dangerous temperatures and damage engine components. In this video i am showing how to troubleshoot and pinpoint a problem on a not working air cond blower the motor with a simple tool like the test light.

Current jeep 2006 jeep wrangler unlimited. Jeep tj how to fix the blower fan if speed goes out or different speeds don t work. Luckily nobody was hurt due to close proximaty of dealership. If the cooling fan stops working most do it yourself.

The cooling fan in a jeep grand cherokee keeps engine temperatures at the correct level by kicking on during times when the engine reaches higher than average temperatures. First is the design of the circuits involved. The infamous blower motor switch resistor problem. Replaced under warranty twice.

The second time was in new york on vacation and the short caused a dash fire in which the wiring harness had to be replaced. 2003 jeep wrangler sport. The male tabs on back of switch break causing shorts and failure. If your jeep wrangler s heater has stopped working this process has failed.

There are a couple of factors that lead up to the failure of the melting fan switch.