Everytime I try to start my vehicle the 40A ignition fuse keeps blowing

2020 CHEVROLET S-10
149,000 MILES • 2.2L • 4 CYL • 2WD • MANUAL
Avatar
SUPER CD
  • MEMBER
  • 2 POSTS
I have checked all my grounds. It did have an aftermarket security alarm on it which I removed. I'm sure I have a short somewhere in the system, I'm just not sure where to look. Or what wires to check. When I used my DMM I with I got OL on the 40A fuse space.
Apr 4, 2021 at 8:36 AM
Avatar
KASEKENNY
  • ✓Experienced Mechanic
  • 18,907 POSTS
Can you confirm what you mean by getting OL on the fuse "space"? You mean with the fuse removed, you are checking resistance across the two terminals of where the fuse goes? If that is the case, then that is correct because with the fuse removed there is an open circuit as the fuse is the connection between the two sides.

Also, can you confirm what year truck this is? You noted a 2020 but I just want to make sure that is correct. Thanks
Apr 5, 2021 at 11:01 AM
Avatar
SUPER CD
  • MEMBER
  • 2 POSTS
It's a 2000 Chevrolet S10.
Apr 5, 2021 at 11:48 AM
Avatar
KASEKENNY
  • ✓Experienced Mechanic
  • 18,907 POSTS
Great. Thanks. What about the first part? I pasted it below.

Can you confirm what you mean by getting OL on the fuse "space"? You mean with the fuse removed, you are checking resistance across the two terminals of where the fuse goes? If that is the case, then that is correct because with the fuse removed there is an open circuit as the fuse is the connection between the two sides.

Thanks
Apr 6, 2021 at 12:07 PM
🔧 Tools & Auto Repair Parts
Find automotive tools, diagnostic equipment, and replacement parts for your next repair.
Shop on Amazon →
Paid affiliate link. As an Amazon Associate, we earn from qualifying purchases.
Add a reply
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.

Ask a new question

Frequently Asked Problems for This Vehicle