Question: Throttle Issue 1994 GMC Sierra C2500 - 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 10-20-2011, 01:27 AM   #1 (permalink)
RynMcDonald
Clutch
 
Join Date: Sep 2011
Posts: 68
iTrader Score: 0 reviews

Throttle Issue 1994 GMC Sierra C2500

Throttle Issue. Yeah..... all this time I thought it was a 95 . Anyway, my dumb *** forgot to plug in the CPS after putting in a third IP and now it will start without having to crank it for almost 4 to 5 seconds. Still I have the acceleration issue..... not wanting to throttle until 5 MPH or faster. I also get codes 19,36 & 94 even thought the check engine light is FINALLY OFF. I hope #4 cylinder isn't damaged because it sure sounds like there's a piston slapping hard as if the skirt on it is broken. I sure hope not after all that's been done. All I need to know is why she's not responding when I push down the throttle pedal until faster than 5(or so) MPH. Please help. Thank you.


Last edited by RynMcDonald; 10-20-2011 at 01:28 AM. Reason: additional information
Offline  
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 10-20-2011, 08:11 AM   #2 (permalink)
racer55
6.5TD Post Addict
 
racer55's Avatar
 
Join Date: Jul 2010
Location: Scugog Island Ontario Canada
Posts: 9,886
iTrader Score: 0 reviews

Ontario Diesel Place Chapter Member

Old School Oil Burners (Old SOBs) Member

How are you going about clearing the codes?

In another post I said that undoing the battery for 30 seconds would clear the codes,try adding to that by turning on the headlights with the battery undone.

Immediately afterwards check the codes again when you connect the battery to be sure that only code 12 remains-then test drive for 20 minutes and check codes again.

__________________
No longer a 6.5 owner
2005 Chev K3500 CCLB Dmax

Diagnostic Checklist 2.0
OBD1 Codes
OBD2 Codes
6.5 FAQ
Carcode & TDCO Instructions
Offline   Reply With Quote Quick reply to this message
Old 10-20-2011, 08:16 AM   #3 (permalink)
racer55
6.5TD Post Addict
 
racer55's Avatar
 
Join Date: Jul 2010
Location: Scugog Island Ontario Canada
Posts: 9,886
iTrader Score: 0 reviews

Ontario Diesel Place Chapter Member

Old School Oil Burners (Old SOBs) Member

One other thing,with an electronic IP the timing needs to be set or checked with a scan tool-TDCO is most important.
Late timing can cause lazyness,hard starting and a hot running engine.

Here is some of what is involved:
https://www.dieselplace.com/forum/showthread.php?t=17992

This thread may help find a fellow member with the tools and experience to help in your area:
https://www.dieselplace.com/forum/showthread.php?t=25950
__________________
No longer a 6.5 owner
2005 Chev K3500 CCLB Dmax

Diagnostic Checklist 2.0
OBD1 Codes
OBD2 Codes
6.5 FAQ
Carcode & TDCO Instructions

Last edited by racer55; 10-20-2011 at 08:16 AM.
Offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 10-20-2011, 04:43 PM   #4 (permalink)
RynMcDonald
Clutch
 
Join Date: Sep 2011
Posts: 68
iTrader Score: 0 reviews

boost increase

also would like to know how boost can be increased. not dramatically so, maybe by about 3-5 lbs.
Offline   Reply With Quote Quick reply to this message
Old 10-20-2011, 05:11 PM   #5 (permalink)
racer55
6.5TD Post Addict
 
racer55's Avatar
 
Join Date: Jul 2010
Location: Scugog Island Ontario Canada
Posts: 9,886
iTrader Score: 0 reviews

Ontario Diesel Place Chapter Member

Old School Oil Burners (Old SOBs) Member

Please click user cp at the top of the page and edit your signature to include the year,make and model of your truck along with any mods you have done.

To increase boost you need to install a turbomaster or get an ECM tuned chip,a member here named "94C1500" can help you with a tune.
__________________
No longer a 6.5 owner
2005 Chev K3500 CCLB Dmax

Diagnostic Checklist 2.0
OBD1 Codes
OBD2 Codes
6.5 FAQ
Carcode & TDCO Instructions

Last edited by racer55; 10-20-2011 at 05:14 PM.
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
Question: Start up issue 1994 GMC Sierra 6.5 TD C2500 RynMcDonald 6.5L Diesel Engine 10 10-31-2011 12:20 PM
1994 c2500 6.5/1988 c1500 6.2 Bryce_Burden90 Closed / Archived Marketplace Ads 1 06-05-2011 09:51 PM
1994 C2500 6.5 Wiring Diagram jsghag 6.5L Diesel Engine 2 12-04-2010 09:51 PM
1994 C2500 6.5 many wires cut need diagram jsghag Electrical 0 12-04-2010 06:41 PM
Blend door replacement 1994 c2500 help lee2001 Interior 2 06-03-2009 01:03 AM


All times are GMT -4. The time now is 05:54 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