Before i start i wanna apologize for this post bein so long. so i was at work and my fiance brought our 01 screw to my store so i could see her and my daughter for a bit. now last year i had installed some electric fans and i used an add-a-circuit to make them key-on only with a relay and i used the fuse under the hood for the overdrive switch. today i pulled the add-a-circuit out and put the regular fuse back in the way it was before and when they went to leave the truck was acting like it didnt wanna drive forward very well. the check engine light was on and gave me 10 codes: 4 for the o2 sensors, 3 for tranny solenoids, and 3 for the evap system. the only thing i had done was to pull the add-a-circuit out and put the regular fuse back in its place; so i pulled the fuse out put it and the add-a-circuit back the way they were, cleared the codes and the truck was just fine. anyone ever seen anything like this or know why this would happen?

 

Do you know what the fuse circuit you used was for?
That is a strange and scary incident.

 

Which type add-a-fuse is it ?

Type 1 :


Type 2:

 

it was type 1, and owner's manual says that fuse is for "HEGO Sensor, Canister Vent, Automatic Transmission, and CMS Sensor" and the only thing i had changed was to pull the add-a-circuit out and put the fuse back in its spot

 

Was the key on or engine running when you pulled the add-a-circuit? That might do it.

 

nope, key off when i pulled it out, comfused the hell outta me when it happened

 

Yup definetly weird.
If any one can figure it out I put my money on Sscully or Project SHO.

 

I would have thought loose fuse slot from using the type #2 above ( basically looks like a blown fuse ).

When you put the fuse back in, did it feel loose at all ?

I am stumped, that is the whole thing with using type #1, the fuse slot if not distorted.

 

Kind of obvious questions, but I figured I'd ask them. You are putting the correct value back in, yes? Also, was the fuse blown when you pulled it out? What were the values of the fuses in the add-a-fuse? Did you try using another fuse?

If you take a multimeter, and measure the voltage between the back of the fuse (when it's in, the little squares that are exposed on the back) and ground, do you get 12V? This would only be to see if the fuse is seated well, and getting power from the fuse box. You'd have to measure the voltage at one of the items affect to see if the power was making it there. Not sure if that made sense

 

i havent used a multimeter on it yet, but no it wasnt blown when i put it back and it didnt feel loose when i put it back in.