OBD Port Not Working, Temp Gauge and Cluster Problems - Diesel Place : Chevrolet and GMC Diesel Truck Forums
 
Home Forum Market Place Garage Tuning Library DTC Tool Register Vendors
Go Back   Diesel Place : Chevrolet and GMC Diesel Truck Forums > GM Diesel Engines > 6.5L Diesel Engine
Register FAQ Forum Rules My Replies My Threads Mark Forums Read Advertise

6.5L Diesel Engine Discuss the 6.5 GM diesel engine & associated components. Automatic transmission questions & problems belong in the 4L80/85 - 4L60E - 6L90 Transmission Forum

DieselPlace.com is the premier Duramax Diesel Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools
Old Today, 12:26 PM   #1 (permalink)
nb3500
Diesel Fanatic
 
nb3500's Avatar
 
Join Date: Dec 2012
Posts: 123
iTrader Score: 0 reviews

OBD Port Not Working, Temp Gauge and Cluster Problems

I have been through the threads and search tool and am finally looking for help on how to proceed. Any thoughts on where to dig in first?

Truck runs great having no issues with performance. I lost my Wait To Start light and replaced both my temp sensors and the Glow Plug Controller (all AC Delco). Strange scenario of events have me scratching my head, must be electrical but not sure where...or my gauge cluster has gone bad.

Turn key to warm glow plugs before starting and get
- gauge needles don't sweep, they used to (right?)
- Service Engine light acts as the WTS light, it's lit as the glow plugs charge- can see / hear from the voltage gauge. Service Engine light turns off when glow plugs stop.


Temp gauge won't budge from 0/100
- I jumped the temp sensor plug on the left side by manifold, nothing happened but the Service Engine light remained on

(A coolant leak started yesterday from the threads-side of the quick disconnect hose at the crossover, haven't lost much coolant. Haven't check coolant level yet, haven't gotten a Low Coolant light either. Looking at that today.)

Not Getting any response when putting paper clip in the OBD port. I am going to disconnect battery to reset computer and see if anything comes back.

__________________
1994 GMC 3500 4x4 crew cab dually, 1 ton
166k miles

Optimizer Engine 6/18
Heath Diesel Lift Pump 6/18
Heath Diesel eProm 6/18
Heath Diesel Turbo 6/18
S&B Intake 6/18
Water Pump / Radiator 6/18
Pillar Gauges 6/18
PMD relocated to bumper 12/12
Diamond Eye 4" exhaust 12/13
2 New Interstate Batteries 1/17
New Turbo Solenoid 1/13
BFG ATs 12/12
Offline  
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old Today, 01:13 PM   #2 (permalink)
Glagulator
Diesel Superstar
 
Join Date: May 2005
Location: Very south TEXAS, Formerly Wisconsin
Posts: 3,755
iTrader Score: 5 reviews

There is a ground wire just above the DLC on the metal dash frame.
Make sure it is clean and tight.
When you unplug the ECT sensor on the front of the drivers head, the temp gauge should peg max temp, with key on. When you ground it you should get "0".

__________________
There are 10 kinds of people in this world; Those who understand binary and those who don't.

99 CREW LONG SRW C3500 work truck 199k+ mi. orig. motor & trans 4.10, modded engine harness, new oil cooler & lines, all new front end parts and poly bushings, trans poly mount, all new brakes.
96 SUBURBAN K2500 wife's truck 210k+ mi. orig. motor & trans, 3.73...
95 C2500 Suburban 6.5td HO w/p, timing set, HB & pulley, all rubber hoses, modded engine & main harness, converted to OBD2, PMD to bumper...
95 C1500 Suburban 6.5td rebuild tranny, convert to DB2, replacing as many parts as I can.
96 C2500 Suburban 7.4L converting to 6.5td w/ DB2, 4L80, 3.73
Online   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Diesel Place : Chevrolet and GMC Diesel Truck Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

PLEASE READ! You must check your email inbox for the confirmation link to complete registration. Please check your spam box if you do not see the email in your inbox.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
Insurance
Please select your insurance company (Optional)

Log-in


Thread Tools

Posting Rules
You may post new threads
You may 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



All times are GMT -4. The time now is 03:22 PM.


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
SEO by vBSEO 3.6.1
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Shoutbox provided by vBShout v6.2.1 (Lite) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd. Runs best on HiVelocity Hosting.
© AutoGuide