Misfires

2007 DODGE CALIBER
145,000 MILES • 2.0L • 4 CYL • 2WD • AUTOMATIC
Advertisement
Avatar
JC-842
  • MEMBER
  • 181 POSTS
I'm confused one wire doesn't respond like all the others because it's grounded by the PCM. So why are three working and ones not? You don't think the PCM is bad?
Aug 12, 2021 at 4:59 PM
Avatar
ASEMASTER6371
  • ASE Certified Mechanic
  • 52,796 POSTS
  • ASE Certified Mechanic
It is possible or the wire from the coil to the PCM is shorted to ground.

Roy
Aug 12, 2021 at 5:01 PM
Avatar
JC-842
  • MEMBER
  • 181 POSTS
I'm not a an electrical person I do find it odd none of those will blink even with the engine running and number one I know is firing. So replacing the PCM is not going to fix the problem the wiring is messed up? Is that correct on Roy?
Aug 12, 2021 at 5:17 PM
Avatar
ASEMASTER6371
  • ASE Certified Mechanic
  • 52,796 POSTS
  • ASE Certified Mechanic
Correct. You need to check the wire from the coil to the PCM first. If the wire is good then it is the PCM.

Roy
Aug 12, 2021 at 5:19 PM
Avatar
JC-842
  • MEMBER
  • 181 POSTS
How in God's name would you find that single wire in all that big wad of wires? There's two connectors going to that PCM that are full of wires. Wouldn't be easier to test the PCM? And why would it not throw a code? Maybe because it's shot and can't determine codes anymore?? Anyway you've been great thanks. I mean that. Thank you and if you think of anything else please let me know. JC
Aug 12, 2021 at 5:31 PM
Avatar
ASEMASTER6371
  • ASE Certified Mechanic
  • 52,796 POSTS
  • ASE Certified Mechanic
You are welcome.

Always glad to help.

Roy
Aug 12, 2021 at 6:09 PM
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 Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.