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Bad ground wire?

Printed From: the12volt.com
Forum Name: Car Security and Convenience
Forum Discription: Car Alarms, Keyless Entries, Remote Starters, Immobilizer Bypasses, Sensors, Door Locks, Window Modules, Heated Mirrors, Heated Seats, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=75583
Printed Date: May 10, 2025 at 9:54 AM


Topic: Bad ground wire?

Posted By: *theone*
Subject: Bad ground wire?
Date Posted: April 02, 2006 at 8:13 PM

Hey guys. A bit off topic but here goes. I'm having elec. problems in my car. I suspect a bad ground wire from the PCM. Ohm'd it out and came up with 2.4 Ohm's. The battery ground is 0.6 Ohm's. The wire that I tested goes straight from the PCM to the same ground point  as the Battery. I've traced out the wire and see no visible problems. I'm thinking wire is broken inside the sheathing. Let me know what you think. Any second opinions would be much appreciated.

Thanks

Ryan




Replies:

Posted By: electrostatic
Date Posted: April 02, 2006 at 8:36 PM
hey neoposted_image
that high ohm reading is more likely do to corrosion. clean it. i would be more concerned with the voltage drop across that wire. this would provide more info about the pcm's power requirements being met. what electrical problems are you having?

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Prove your connections, use a meter!
I promise, I'll behave!



Posted By: *theone*
Date Posted: April 02, 2006 at 8:42 PM

The car is acting up intermittently. Varoius things from fuel pump not running to so-called sensor failures to lights acting up. The only thing in common with all the components is the PCM. I've tested the fuel pump and it checks out. The fuel pump relay will sometimes buzz, other times nothing, other times works normal. Do you think that the ground wire could be broken or cracked inside and give the added resistance?

Ryan




Posted By: 1stclasso
Date Posted: April 02, 2006 at 9:19 PM

i dont think running another ground would harm anything so i would say try it out,



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Posted By: Powermyster
Date Posted: April 03, 2006 at 3:10 AM
1stclasso is right just run a temp ground see how that works for ya

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Why oh Why didn't i take the blue pill
Darren Power




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