im generally pretty mechanically inclined.. cant seem to locate the fuses that are under the hood.. correct me if im wrong but i was told that there were fuses under the hood in addition to the ones on the side of the dash when you open the driver door.

my problem is that my blower motor doesnt work often. like it has a mind of its own. trying to figure out a different way (if possible) to get to it to replace it or check what i have to without cutting the fire wall. but figured i would check fuses first. all that have to do with heat/ac in the truck are good. cant seem to locate that fuse box under the hood (if there is one of course)..

also, for the last 4 ish years i havent been able to keep the engine light off for more than about 6 weeks. always the same code. oxygen sensor. bank 1 sensor 2. replaced sensor with brand new sensor. found out that the threads in the exaust pipe were stripped so i replaced that piece of pipe which happened to be attached to the cat. all brand new. light is still on with same code. thinking i may have messed up the threads on the sensor itsself trying to rig it before putting $200 out for the new part. ended up buying all new but keeping the same sensor. hoping for other suggestions besides buying a new sensor and having wasted $55 on a sensor that is only malfunctioning because of the threads.


open to any suggestions on both the blower motor malfunction and the sensor malfunction.

(just a reminder, be easy, im a 26 yr old female w/ general mechanical knowledge but very interested in learning more )

hope someone can help me asap! thanks!!!

 

The blower motor is located on the firewall on the drivers side, real easy to get to, and get off. It could just be the ground for the blower motor, Locate the blower motor, and there will be a ground wire coming off of it that connects to the firewall, take it off from the firewall, clean the connection, put some dialect grease and put it back on.
Could be your problem.

As for the under hood fuse box, what year and model blazer?

 

My dads blazer,which is a 92 model had this same issue. ended up being the black connector that plugs into the blower had burnted up on the inside and caused a loose connection.

 

thanks.. hope this helps! It is a 1996 S10 Blazer