PT Cruiser Forum  

Go Back   PT Cruiser Forum > General Forums > Tech & Performance Forum

PT Cruiser Forum

Bad ground connection

Like Tree11Likes
  • 5 Post By Carl48
  • 1 Post By LionPT
  • 3 Post By Carl48
  • 1 Post By Carl48
  • 1 Post By _PTGT03

LinkBack Thread Tools Display Modes
  #1 (permalink)  
Old 06 Jul 2018, 11:02 pm
Fanatic Cruiser
Join Date: Jun 2009
Location: Rochester, Michigan
Posts: 675
Default Bad ground connection

Was doing some maintenance on my PT today when for some reason (maybe my Guardian Angel tapped me on the shoulder) decided to inspect the ground connection on the right inner fender. Seven ground wires are crimped to a ring terminal which is screwed onto the inner fender. They didn't even bother to remove the paint around the screw hole. The wires had corroded to the point that they were just brown powder. The whole connection crumbled in my hand. How it even worked in violation of Ohm's Law is a mystery to me. Managed to strip back the wires and twist them together and double crimp them in an AMP butt connector. Crimped a 10 AWG wire in the other end of the butt connector and ran it up to the bracket on the right strut tower. Terminated the #10 wire with a 1/4" ring connector and grounded it at the same location as the existing ground strap on the bracket.
Reply With Quote
  #2 (permalink)  
Old 07 Jul 2018, 06:01 am
LionPT's Avatar
Veteran Cruiser
Join Date: May 2014
Location: Central Florida
Posts: 4,422
Default Re: Bad ground connection

For those that don't know...

NitroPT likes this.

2006 Touring Edition in Cool Vanilla...aka/Ghost
Reply With Quote
  #3 (permalink)  
Old 07 Jul 2018, 09:26 am
Fanatic Cruiser
Join Date: Jun 2009
Location: Rochester, Michigan
Posts: 675
Default Re: Bad ground connection


Good pic of the similar situation on the left (driver) side. I had modified that situation some years ago upon replacing the cheapo stock #8 battery cables with heavier cables. Took the opportunity to eliminate the crappy sheet metal screw and replace it with a 1/4-20 stud through an existing hole in the strut tower then bonded it with a length of #10 to the battery ground stud shown to the right in your pic.

My struggle yesterday was on the right (passenger) side. There is a similar crappy sheet metal screw ground on the inner fender on that side as well. Probably should have mentioned that the upper motor mount was out which made the otherwise difficult to see connection much more visible.

Giving these type connections an occasional shot of WD-40 is a good idea. The WD-40 wicks up the wire strands and displaces any moisture as well as provide some protection.

Last edited by Carl48; 07 Jul 2018 at 09:28 am.
Reply With Quote
  #4 (permalink)  
Old 21 Jul 2018, 06:33 pm
Fanatic Cruiser
Join Date: Jun 2009
Location: Rochester, Michigan
Posts: 675
Default Re: Bad ground connection

FWIW, did some research on the right inner fender ground connection. On my 08 base NA gas PT this connection provides ground for PCM (4 wires), A/C compressor clutch, 02 sensors, radiator fan module, and back-up light switch.

Note... this will be different for other model years, diesel, trim, etc. Also, on some PTs there may be two ring terminals at this ground point.
pt06 likes this.
Reply With Quote
  #5 (permalink)  
Old 22 Jul 2018, 03:10 pm
_PTGT03's Avatar
Fanatic Cruiser
Join Date: Oct 2015
Location: Abbotsford, British Columbia.
Posts: 768
Default Re: Bad ground connection

I was tasked with a project on an industrial lift truck this week. One of the ground wires was cut away from the harness strap which was steel and very sharp. Over a period of years it cut the wire and increased the resistance, which made the computer unable to give voltage to any sensors and so the engine cranked but not run.
oldthom likes this.
2003 GT M/T in Onyx Green Pearl on Michelin Pilot Sport AS 3 Plus Tires 205/50ZR17. Dark Slate Gray Interior. OEM cargo net, parcel shelf, slush mats and trunk protector, mud flaps, mopar subwoofer. Platinum edition pedals, Neon SX 2.0 steering wheel with black+grey wrapped leather cover. Generic lowering springs, KYB gas shocks, Valeo solid flywheel conversion and clutch kit. Urethane insert engine mounts. Energy suspension full body urethane bushing kit. Chrysler premium front speakers, Jenson 6x9 rears. Boston Audio 4x55W amp. Panasonic head unit with xtenzi bluetooth. 300W AC power inverter. Escort 360max and Escort Shifter ZR4, dual front+rear dash camera. stage 1 blow off valve and syked tune computer . Boost and oil pressure gauges with Turbo-Timer. Needswings 3" exhaust elbow, Electric valve actuated Y-pipe with catalytic converter. To do: coilovers, 2step controller, quaife diff, Air-Fuel Meter
Reply With Quote

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
Ground Cable Connection PianoTunerCruiser General PT Cruiser Discussions 5 01 Jun 2013 01:34 pm
iPod connection? rcalzadilla Sound and Security Forum 9 15 Dec 2012 01:52 pm
iPod Connection jmack Sound and Security Forum 1 22 Nov 2009 07:07 pm
iPod connection cnelson Sound and Security Forum 11 11 Apr 2003 01:35 pm

All times are GMT -5. The time now is 09:54 pm.

Powered by vBulletin® Version 3.8.2
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.
LinkBacks Enabled by vBSEO 3.6.0 PL2 © 2011, Crawlability, Inc.