82 6.2 Controller Question - 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 > 6.2L Diesel Engine
Register FAQ Forum Rules My Replies My Threads Mark Forums Read Advertise

6.2L Diesel Engine Discuss the 6.2 GM diesel engine & associated components.

DieselPlace.com is the premier Duramax Diesel Forum on the internet. Registered Users do not see the above ads.
Like Tree1Likes

Reply
 
LinkBack Thread Tools
Old 09-19-2015, 08:38 PM   #1 (permalink)
Bones200
Diesel Starter
 
Join Date: Aug 2015
Location: Greensboro, NC area
Posts: 180
iTrader Score: 0 reviews

82 6.2 Controller Question

I unhooked the controller when my glow plug relay wasn't working(installed manual switch)
Has been running fine. I was checking the high idle solenoid out today. Couldn't get power to it. I though maybe the controller did something for it? So I hooked the controller back up. Still same.
NOW the question I need help with.FORGET THE high idle for now.
I left the controller hooked up, went and rode it. It seems weaker in power than before(not saying it is a power house by any means). So I unhooked it. The power came back. What if I leave it unplugged. What does that hurt? Or does it really need to be hooked up? Like I said before, the controller quit operating the glow plug relay.
I wasn't sure if it helped control timing or really "shorting out" something that doesn't need to be because it is bad.
I am new to the diesel engine, that is why I am asking questions as i go along.

__________________
1982 GMC Jimmy 6.2 4WD Automatic 700R4 3.08
Running 31 10.5 15
Offline  
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 09-19-2015, 09:19 PM   #2 (permalink)
Diaric
R.I.P. Sam
 
Diaric's Avatar
 
Join Date: Jan 2008
Location: Bentley , Alberta
Posts: 32,094
iTrader Score: 2 reviews

Old School Oil Burners (Old SOBs) Member

Alberta Coal Rollers Member

DieselPlace.com Lifetime Premium Member

Quote:
Originally Posted by Bones200 View Post
. What if I leave it unplugged. What does that hurt? Or does it really need to be hooked up? Like I said before, the controller quit operating the glow plug relay.
I wasn't sure if it helped control timing or really "shorting out" something that doesn't need to be because it is bad.
Nothing will happen, all it controls is the glow plugs, nothing else.
Your truck is mechanical, nothing changes the timing except the inside of the injection pump.

What your saying happened, should never be able to happen.

__________________
1987 6.2l Jimmy , being restored,4" lift, 35 mudders 1993 W350 5.9 , custom stretched cab, duelly flatdeck
2001 VW TDI Jetta 4 door loaded 2001 VW TDI Golf 2 door swapped engine project
Quote:
Originally Posted by 4320diesel View Post
well to make your pump retarded, you could let it hang out with me for a day
Quote:
Originally Posted by Hawkstrong View Post
Diaric wins thread derailment......
Quote:
Originally Posted by High Sierra 2500 View Post
Yeah Diaric, I gotta say, I'm afraid I'm going to have to give you an official warning on that.
6.2 FAQ's AND ANSWERS Click Here
My Restoration Thread Click Here
Alberta Coal Roller Member #2
Offline   Reply With Quote Quick reply to this message
Old 09-19-2015, 10:41 PM   #3 (permalink)
JCDiesel
Let's take the Truck!
 
JCDiesel's Avatar
 
Join Date: Dec 2013
Location: Minnesota Nice
Posts: 5,525
iTrader Score: 1 reviews

Old School Oil Burners (Old SOBs) Member

Minnesota/Western Wisconsin DP Club Member

82 round controller is garbage. Stay manual and look forward. Leaving it unplugged or plugged doesnt matter. Youre thinking is has less power one way but its just a 6.2
__________________
82 Park Ave. 5.7 DX Stock with Stanadyne FWS and Filtermag
81 Riviera 5.7 Donor vehicle for The 82 Park Ave Compliments of 57Diesel
82 C10 2WD 6.2 Parts Truck
91 Suburban 2500 4x4 6.2 Bad Transmission
85 Cadillac Deville factory 4.3 Oldsmobile Diesel
91 GMC Sierra K1500 6.2 NA Bad Transmission
94 K3500 CC DRW 6.5TD All the normal stuff done. DE exhaust Custom Parker Racor Rust free beauty
My 94 1 Ton Project here: https://www.dieselplace.com/forum/63...c-revival.html
Quote:
Originally Posted by smackzed View Post
my guess would be shocks
Quote:
Originally Posted by alpacalips View Post
Even the guys who own them aren't 5.7 guys.
Offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 09-20-2015, 09:03 AM   #4 (permalink)
Bones200
Diesel Starter
 
Join Date: Aug 2015
Location: Greensboro, NC area
Posts: 180
iTrader Score: 0 reviews

Thanks! I will leave it unplugged then.
__________________
1982 GMC Jimmy 6.2 4WD Automatic 700R4 3.08
Running 31 10.5 15
Offline   Reply With Quote Quick reply to this message
Old 09-20-2015, 05:31 PM   #5 (permalink)
Trios
Diesel Champ
 
Join Date: Jun 2009
Location: Seattle, WA
Posts: 1,627
iTrader Score: 0 reviews

Armed Forces Club Member

Old School Oil Burners (Old SOBs) Member

Quote:
Originally Posted by Diaric View Post
Your truck is mechanical, nothing changes the timing except the inside of the injection pump.

What your saying happened, should never be able to happen.
Forgetting about the cold advance solenoid, Rich?

To the OP:

There are two solenoids on the IP, one is a high-idle which presses on the 'throttle' plate and the other adjusts the IP internally for more advance.

Depending on how your timing is set currently, more advance could mean it feels like it has more power, or less. There is a switch in one of the heads (I believe passenger side rear?) that controls both the high idle and cold advance, it should have 12v hot on one side of the switch and thus it provides 12v to these solenoids when the motor is cool.

Could be that you're unplugging these as well when you unplug the glow controller?
__________________
2003 Corvette Coupe, Quicksilver metallic, 6spd.
2005 Trailblazer 4.6L 4x4
1985 C30 Silverado, TH400, 6.2L all stock (except all mechanical gauges) w/ utility bed. SOLD
1997 Isuzu Rodeo 3.2L V6, 5spd, 4x4, brush guard, "Snowpacalype Beater" SOLD

Quote:
Originally Posted by IamDave0887 View Post
Trios is right.
Quote:
Originally Posted by Diaric View Post
x2 Trios is right lol

Last edited by Trios; 09-20-2015 at 05:31 PM.
Offline   Reply With Quote Quick reply to this message
Old 09-20-2015, 09:18 PM   #6 (permalink)
Diaric
R.I.P. Sam
 
Diaric's Avatar
 
Join Date: Jan 2008
Location: Bentley , Alberta
Posts: 32,094
iTrader Score: 2 reviews

Old School Oil Burners (Old SOBs) Member

Alberta Coal Rollers Member

DieselPlace.com Lifetime Premium Member

I'm not forgetting anything, the cold advance isn't connected to the glow controller. Disconnecting and reconnection the wrong wiring is of course possible.
And he has an 82, IIRC, the sensor is incorporated in the controller, I cant remember if it even has the little brass one like the fast idle/cold advance one.
__________________
1987 6.2l Jimmy , being restored,4" lift, 35 mudders 1993 W350 5.9 , custom stretched cab, duelly flatdeck
2001 VW TDI Jetta 4 door loaded 2001 VW TDI Golf 2 door swapped engine project
Quote:
Originally Posted by 4320diesel View Post
well to make your pump retarded, you could let it hang out with me for a day
Quote:
Originally Posted by Hawkstrong View Post
Diaric wins thread derailment......
Quote:
Originally Posted by High Sierra 2500 View Post
Yeah Diaric, I gotta say, I'm afraid I'm going to have to give you an official warning on that.
6.2 FAQ's AND ANSWERS Click Here
My Restoration Thread Click Here
Alberta Coal Roller Member #2

Last edited by Diaric; 09-20-2015 at 09:22 PM.
Offline   Reply With Quote Quick reply to this message
Old 09-20-2015, 09:23 PM   #7 (permalink)
Bones200
Diesel Starter
 
Join Date: Aug 2015
Location: Greensboro, NC area
Posts: 180
iTrader Score: 0 reviews

I will look into that. When I plugged the controller in yesterday, the engine was at operating temp. I went on a slight hill behind the house. It would spin up the hill BEFORE plugging the controller back up. But would NOT spin and felt sluggish up same hill. UNPLUGGED it again and it spun up the hill like before. Today, it spun up the hill.
I am not sure what all the the controller does. It has way too many wires on it just to control one thing in my opinion. But it seems to run ok to me.
I still haven't got the high idle thing fixed(either way). Thought I would ask about the controller FIRST. Might work on that again tomorrow.
__________________
1982 GMC Jimmy 6.2 4WD Automatic 700R4 3.08
Running 31 10.5 15
Offline   Reply With Quote Quick reply to this message
Old 09-21-2015, 08:53 AM   #8 (permalink)
legendman
Ex- 6BT Square Body Man
 
legendman's Avatar
 
Join Date: Aug 2008
Location: Oakdale, CT
Posts: 9,556
iTrader Score: 2 reviews

CT Smoke Member

Old School Oil Burners (Old SOBs) Member

Page 313 in the student manual shows connections to the high idle and cold start advance solenoids from the early style controller...
__________________
Quote:
Originally Posted by Diaric View Post
What your saying happened, should never be able to happen.
Quote:
Originally Posted by smackzed View Post
I put a chevrolet tailgate on my last truck and it started acting like a girl...love me, need me, want me pay attention to me. Took it off and put the GMC back on (fixed the latch) and it went back to being the same old dirty bastard it used to be
~ Bob
1987 K20 5.7 TBI 700r4 np208
1999 Chevrolet K2500 5.7L Auto
2006 Jetta TDI 5sp
2002 Golf TDi 4dr 5sp

Do yourself a favor and read the 6.2 Diesel Student Training Manual ... lots of good info...it's in PDF format located here >> PDF Manuals
Offline   Reply With Quote Quick reply to this message
Old 09-21-2015, 09:26 AM   #9 (permalink)
JCDiesel
Let's take the Truck!
 
JCDiesel's Avatar
 
Join Date: Dec 2013
Location: Minnesota Nice
Posts: 5,525
iTrader Score: 1 reviews

Old School Oil Burners (Old SOBs) Member

Minnesota/Western Wisconsin DP Club Member

Maybe ill unplug my 82 & see what happens. Seems possible that the cold advance could wire through the controller because it has like 5 or 6 wires coming from it and has always been a mystery to me. I think theyre all green and black or grey. But why would it matter ? Once the truck is up to 100 degrees Fahrenheit or whatever the cold advance kicks off so maybe his controller is shot and the advance is always on when its plugged in because its shorted out. My truck sure gets doggy when it kicks out usually within a few blocks on a cool day. I cant look at any diagrams on my mobile so just thinking
__________________
82 Park Ave. 5.7 DX Stock with Stanadyne FWS and Filtermag
81 Riviera 5.7 Donor vehicle for The 82 Park Ave Compliments of 57Diesel
82 C10 2WD 6.2 Parts Truck
91 Suburban 2500 4x4 6.2 Bad Transmission
85 Cadillac Deville factory 4.3 Oldsmobile Diesel
91 GMC Sierra K1500 6.2 NA Bad Transmission
94 K3500 CC DRW 6.5TD All the normal stuff done. DE exhaust Custom Parker Racor Rust free beauty
My 94 1 Ton Project here: https://www.dieselplace.com/forum/63...c-revival.html
Quote:
Originally Posted by smackzed View Post
my guess would be shocks
Quote:
Originally Posted by alpacalips View Post
Even the guys who own them aren't 5.7 guys.

Last edited by JCDiesel; 09-21-2015 at 09:27 AM.
Offline   Reply With Quote Quick reply to this message
Old 09-21-2015, 09:39 AM   #10 (permalink)
Diaric
R.I.P. Sam
 
Diaric's Avatar
 
Join Date: Jan 2008
Location: Bentley , Alberta
Posts: 32,094
iTrader Score: 2 reviews

Old School Oil Burners (Old SOBs) Member

Alberta Coal Rollers Member

DieselPlace.com Lifetime Premium Member

Quote:
Originally Posted by JCDiesel View Post
But why would it matter ? Once the truck is up to 100 degrees Fahrenheit or whatever the cold advance kicks off so maybe his controller is shot and the advance is always on when its plugged in because its shorted out.
Exactly, it was up to temp so nothing should be tripped on, plugged in or not.

Quote:
Originally Posted by legendman View Post
Page 313 in the student manual shows connections to the high idle and cold start advance solenoids from the early style controller...

Here, now if someone wants to decipher it...



__________________
1987 6.2l Jimmy , being restored,4" lift, 35 mudders 1993 W350 5.9 , custom stretched cab, duelly flatdeck
2001 VW TDI Jetta 4 door loaded 2001 VW TDI Golf 2 door swapped engine project
Quote:
Originally Posted by 4320diesel View Post
well to make your pump retarded, you could let it hang out with me for a day
Quote:
Originally Posted by Hawkstrong View Post
Diaric wins thread derailment......
Quote:
Originally Posted by High Sierra 2500 View Post
Yeah Diaric, I gotta say, I'm afraid I'm going to have to give you an official warning on that.
6.2 FAQ's AND ANSWERS Click Here
My Restoration Thread Click Here
Alberta Coal Roller Member #2

Last edited by Diaric; 09-21-2015 at 09:41 AM.
Offline   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


Similar Threads
Thread Thread Starter Forum Replies Last Post
new with a 1982 6.2 OXEN 6.2L Diesel Engine 40 09-19-2015 04:43 PM
82 6.2 Fast Idle Cold? Bones200 6.2L Diesel Engine 3 09-17-2015 09:20 PM
enghmotors software question... edzeb 6.5L Diesel Engine 14 09-15-2015 01:48 PM
1996 Water pump Upgrade Question... edzeb 6.5L Diesel Engine 8 09-14-2015 03:08 PM
The 6.2L FAQ's... The Master List of Information and 6.2 Answers High Sierra 2500 6.2L Diesel Engine 7 03-01-2015 12:00 PM


All times are GMT -4. The time now is 05:42 AM.


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