Hey all. I recently had an issue where the fan setring would only work on 4. I figured it was the blower motor resistor so I stopped by O'Reilly auto parts and got a new one. Worked great for about a day then back to only working on 4 only. I was told it was the blower motor itself needing replaced. I ordered a replacement from autozone and got a new resistor as well. Everything worked awesome for about a week. Today on the way home the fan speed stopped working on 2 and is back to only working on 4 again. What is going on?

 

Time For Some Reading!

A Check of The Plug in to Blower Switch and Maybe Use Some Contact Cleaner on Connection and Switch! Just a Thought!

Here are The FORD Shop Manual pdf's on Hvac.

KC

 

I'm so confused dude. The a/c works fine. I'm just trying to figure out why i keep blowing through resistors. Do I need a new switch?

 

Relax, The 2nd PDF Has Info on Blower Switch Diag. It's 80 Pages Got To Scroll a Bit!

If You Check Connector and Clean Switch and Things Start Working You Know The Switch Has Issues! If So!

https://www.fordpartsgiant.com/parts...html?pnc=19986

KC

Aftermarket Has The Switch as Well! As Cheap as it Is! Might Want to Just Replace & Know! Factory Parts Do Hold Up Better Though!


https://www.rockauto.com/en/partsear...m=7C3Z-19986-A