Sluggish feeling - Diesel Truck Forum - TheDieselGarage.com
Thread Details Posted by Skyhigh4by, this thread has received 7 replies and been viewed 2461 times.

 
LinkBack Thread Tools Display Modes
post #1 of 8 (permalink) Old 02-10-2008, 12:45 AM Thread Starter
 
Join Date: Dec 2008
Posts: 55
Points: 877
Thanks: 0
Thanked 0 Times in 0 Posts
Sluggish feeling

I test drove a 04 chevy today that had the LB7 in it. It seemed to run perfectly fine but it just felt like something was holding it back. Right after I tested it I drove my buddies 04 with the LLY and it just seemed to be way more respsonive and just had more grunt. The LB7 truck was completely stock and my buddies LLY was also stock but had 35 inch tires. Did the LB7s always feel a little held back or was it just not running right?
Skyhigh4by is offline  
Sponsored Links
Advertisement
 
post #2 of 8 (permalink) Old 02-10-2008, 12:56 AM
Senior Member
 
Join Date: May 2005
Posts: 3,939
Points: 47,887
Thanks: 27
Thanked 60 Times in 44 Posts
Probably just not running right. Could have been a fuel filter issue, could be trans filter needed changing....who knows.
TheBac is offline  
post #3 of 8 (permalink) Old 02-10-2008, 06:13 PM
TDG Mafia # 81
 
Horsehaulin's Avatar
 
Join Date: Jan 2009
Location: Fort Wayne, IN
Posts: 1,903
Points: 52,866
Thanks: 0
Thanked 26 Times in 24 Posts
My truck felt the same way until I changed the fuel and trans filters. The truck runs much better.


Was your buddies LLY tuned, chipped and have an exhaust/intake or al of the above, and how much was done to the LB7? Just opening the exhaust and installing a chip will help.

Tony

2001 GMC 2500HD EC/LB, 4X4. A few go fast goodies. 540hp/1107tq Danville Dyno 11/09, Kennedy 40% injectors.

05 IH 9400i with Cummins ISX pulling a lumber bunk trailer, stuck in a swamp somewhere in Indiana.

Proud Veteran Served 6yrs Active Army From Germany, Kuwait and Bosnia to Ft. Hood and Ft. Knox
Horsehaulin is offline  
post #4 of 8 (permalink) Old 02-10-2008, 07:51 PM Thread Starter
Threadstarter
 
Join Date: Dec 2008
Posts: 55
Points: 877
Thanks: 0
Thanked 0 Times in 0 Posts
Both trucks were totally stock. The LB7 had 117,000kms on it and the LLY had 150,000kms. The LLY truck also had 35 inch tires.
Skyhigh4by is offline  
post #5 of 8 (permalink) Old 02-10-2008, 08:11 PM Thread Starter
Threadstarter
 
Join Date: Dec 2008
Posts: 55
Points: 877
Thanks: 0
Thanked 0 Times in 0 Posts
I called the dealer and told him that my buddies truck felt alot quicker. He said he was gonna take it for a drive and then get it into the shop to have it looked at.
Skyhigh4by is offline  
post #6 of 8 (permalink) Old 02-12-2008, 01:07 AM Thread Starter
Threadstarter
 
Join Date: Dec 2008
Posts: 55
Points: 877
Thanks: 0
Thanked 0 Times in 0 Posts
Dealer called back and said that the mechanic said that because it was -30c the trans takes a long time to warm up and until it does it wont feel very responsive. When I drove the truck it hadnt been running long. Does this sound right to you guys?
Skyhigh4by is offline  
post #7 of 8 (permalink) Old 02-12-2008, 03:18 AM
TDG Mafia # 81
 
Horsehaulin's Avatar
 
Join Date: Jan 2009
Location: Fort Wayne, IN
Posts: 1,903
Points: 52,866
Thanks: 0
Thanked 26 Times in 24 Posts
My truck runs a little weak when it is below 10*F, but I have a winter front on mine and it warms up rather quickly when I hot rod it a little.

Tony

2001 GMC 2500HD EC/LB, 4X4. A few go fast goodies. 540hp/1107tq Danville Dyno 11/09, Kennedy 40% injectors.

05 IH 9400i with Cummins ISX pulling a lumber bunk trailer, stuck in a swamp somewhere in Indiana.

Proud Veteran Served 6yrs Active Army From Germany, Kuwait and Bosnia to Ft. Hood and Ft. Knox
Horsehaulin is offline  
post #8 of 8 (permalink) Old 02-16-2008, 10:45 PM
Senior Member
 
Jetmech's Avatar
 
Join Date: Dec 2008
Location: Calgary, AB
Posts: 188
Points: 8,304
Thanks: 8
Thanked 17 Times in 10 Posts
Ya that sounds right. The tranny will shift different until it warms up some.


2003 GMC 2500HD 4" straight exhaust, BD manifold, intake, Air Dog 150 lift pump, BD Supermax turbo, Suncoast Stage IV, Isspro EV2 gauges, EFI Live w/DSP 5 tuned by Xtreme FX Tuning.

Canadian Club Member #6.
Jetmech is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Diesel Truck Forum - TheDieselGarage.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

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:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



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

 
For the best viewing experience please update your browser to Google Chrome