LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Running really slow

Thread Tools
 
Search this Thread
 
Old Feb 17, 2007 | 10:05 AM
  #1  
grnmonster's Avatar
Thread Starter
On The Tree
iTrader: (1)
 
Joined: Jan 2007
Posts: 178
Likes: 0
Default Running really slow

So after taking my car to the track last night it is defanatley running slow, i cant figure it out problem goes as follows.....If my car has been sitting for a long period of tim like overnight or 5-6 hours it runs awesome does not hesitate at all and acclerates like it should but after driving for about 10-15 minutes it starts to run really crappy , idling rougher hesitating when acclerating and just not feel as fast as it should???? HELP!!!
Reply
Old Feb 17, 2007 | 03:50 PM
  #2  
Formula_LT1's Avatar
Launching!
iTrader: (2)
 
Joined: Nov 2003
Posts: 263
Likes: 0
From: Greenup, Kentucky
Default

Sounds like an oxygen sensor....Unplug them for a trip down the road and see if that doesn't clear up anything. It also could be the ignition moduel. When they heat up, they will cause a car to miss, or just litteraly die all together.
Reply
Old Feb 18, 2007 | 09:37 AM
  #3  
LT14LIFE JT's Avatar
TECH Apprentice
iTrader: (1)
 
Joined: Oct 2005
Posts: 339
Likes: 0
From: VA
Default

No SES light? If not, maybe your EGR is fugged up. How old are your plugs/wires? I had a burnt wire that made my car run like that. If it's not throwing a code, it makes it a little harder to track down.
Reply
Old Feb 18, 2007 | 10:09 AM
  #4  
Sgt. Spuds's Avatar
Shirley Temple Drinker
iTrader: (1)
 
Joined: Oct 2005
Posts: 3,333
Likes: 1
From: IL
Default

Poor running is just something to remind you you have an lt1..



And its prolly o2's
Reply
Old Feb 18, 2007 | 10:15 AM
  #5  
97LT1's Avatar
TECH Fanatic
20 Year Member
iTrader: (3)
 
Joined: Sep 2004
Posts: 1,417
Likes: 0
From: Clear lake TX (From LaPorte)
Default

Originally Posted by Sgt. Spuds
Poor running is just something to remind you you have an lt1..



And its prolly o2's

Why cut yourself and everybody else on here down like that? It think my motor runs decent, and several others do. I think its time you did another mod to your motor to lift your spirits.
Reply
Old Feb 18, 2007 | 10:18 AM
  #6  
97blkz's Avatar
10 Second Club
iTrader: (1)
 
Joined: Oct 2004
Posts: 2,125
Likes: 1
Default

Originally Posted by 97LT1
Why cut yourself and everybody else on here down like that? It think my motor runs decent, and several others do. I think its time you did another mod to your motor to lift your spirits.

Most lt1's are ragged out and never fixed. This is a benefit to those who take the time and money to assemble one right. People think it's just an lt1.
Reply
Old Feb 18, 2007 | 10:22 AM
  #7  
97LT1's Avatar
TECH Fanatic
20 Year Member
iTrader: (3)
 
Joined: Sep 2004
Posts: 1,417
Likes: 0
From: Clear lake TX (From LaPorte)
Default

Originally Posted by 97blkz
Most lt1's are ragged out and never fixed. This is a benefit to those who take the time and money to assemble one right. People think it's just an lt1.
true, but I wouldnt expect a general comment like that from somebody that owned one.
Reply
Old Feb 18, 2007 | 05:52 PM
  #8  
grnmonster's Avatar
Thread Starter
On The Tree
iTrader: (1)
 
Joined: Jan 2007
Posts: 178
Likes: 0
Default

[QUOTE=LT14LIFE JT]No SES light? If not, maybe your EGR is fugged up. How old are your plugs/wires? I had a burnt wire that made my car run like that. If it's not throwing a code, it makes it a little harder to track down.[/



I have no idea how old my plugs/wires are i know i have never changed them so im gonna start with that then the o2 sensors ...hopefully its not the opti
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'

 Brett Foote
story-1

Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

 Pouria Savadkouei
story-2

Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

 Verdad Gallardo
story-3

7 Most Reliable High-Performance Engines GM Has Ever Built

 Verdad Gallardo
story-4

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

 Verdad Gallardo
story-5

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-6

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-7

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-8

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-9

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
Old Feb 18, 2007 | 06:25 PM
  #9  
BlazerINtheWork's Avatar
Launching!
iTrader: (7)
 
Joined: Sep 2005
Posts: 201
Likes: 0
From: Jacksonville, FL
Default

you didn't answer it, but wondering if the SES light is on? (right away, or after it warms up)


edit**

Originally Posted by Sgt. Spuds
Poor running is just something to remind you you have an lt1..
got a kick out of that btw, nothing like a little self humor
Reply
Old Feb 18, 2007 | 09:00 PM
  #10  
grnmonster's Avatar
Thread Starter
On The Tree
iTrader: (1)
 
Joined: Jan 2007
Posts: 178
Likes: 0
Default

no ses light is on just the check engine light cause i have not reset it since replacong my heads
Reply
Old Feb 18, 2007 | 09:17 PM
  #11  
BlazerINtheWork's Avatar
Launching!
iTrader: (7)
 
Joined: Sep 2005
Posts: 201
Likes: 0
From: Jacksonville, FL
Default

have you tested to see what codes it is throwing?
Reply
Old Feb 18, 2007 | 10:12 PM
  #12  
NovaTodd's Avatar
Staging Lane
 
Joined: Nov 2006
Posts: 75
Likes: 0
Default

If it is not setting the SES light, most like likely, it is not the O2's. While it would not hurt the change them, try changing the teperature sensor in the water pump. That is the one the computer uses to base it's tune on. It's alot cheaper than O2's.

My 2 cents
Reply
Old Feb 18, 2007 | 11:15 PM
  #13  
grnmonster's Avatar
Thread Starter
On The Tree
iTrader: (1)
 
Joined: Jan 2007
Posts: 178
Likes: 0
Default

I AM A COMPLETE ******* IDIOT, i just realized that ses stands for SERVICE ENGINE SOON which is in fact on in my car....i i had it read a couple months ago by my brother he said something about a misfire????
btw. ses on right away all the time
Reply
Old Feb 18, 2007 | 11:19 PM
  #14  
97Lt1TA's Avatar
TECH Resident
iTrader: (54)
 
Joined: Mar 2005
Posts: 848
Likes: 2
From: chicago
Default

get it checks it if it says multiple misfires that means o2 sensors most likely.
Reply
Old Feb 18, 2007 | 11:23 PM
  #15  
streetwarrior96's Avatar
TECH Fanatic
 
Joined: Feb 2006
Posts: 1,119
Likes: 0
Default

Originally Posted by Sgt. Spuds
Poor running is just something to remind you you have an lt1..



And its prolly o2's
speak for your car Mine runs like firebat out of hell and back to get more
Reply
Old Feb 18, 2007 | 11:27 PM
  #16  
BlazerINtheWork's Avatar
Launching!
iTrader: (7)
 
Joined: Sep 2005
Posts: 201
Likes: 0
From: Jacksonville, FL
Default

Originally Posted by grnmonster
I AM A COMPLETE ******* IDIOT, i just realized that ses stands for SERVICE ENGINE SOON which is in fact on in my car....i i had it read a couple months ago by my brother he said something about a misfire????
btw. ses on right away all the time

Lol, it happens. defintly find out what codes it's throwing.
Reply
Old Feb 18, 2007 | 11:46 PM
  #17  
grnmonster's Avatar
Thread Starter
On The Tree
iTrader: (1)
 
Joined: Jan 2007
Posts: 178
Likes: 0
Default

Originally Posted by 97Lt1TA
get it checks it if it says multiple misfires that means o2 sensors most likely.
i believe thats exactly what it said...time for new o2 sensors
Reply
Old Feb 19, 2007 | 12:01 AM
  #18  
97Lt1TA's Avatar
TECH Resident
iTrader: (54)
 
Joined: Mar 2005
Posts: 848
Likes: 2
From: chicago
Default

Originally Posted by grnmonster
i believe thats exactly what it said...time for new o2 sensors
if i was you i would put new wires and plugs if you havent done that yet would be a good tune up for the car
Reply
Old Feb 19, 2007 | 12:05 AM
  #19  
grnmonster's Avatar
Thread Starter
On The Tree
iTrader: (1)
 
Joined: Jan 2007
Posts: 178
Likes: 0
Default

Originally Posted by 97Lt1TA
if i was you i would put new wires and plugs if you havent done that yet would be a good tune up for the car
yea im also gonna do new plugs and wires for sure ...its about time anyways, man this car is draining me lol
Reply
Old Feb 19, 2007 | 12:09 AM
  #20  
Gun5's Avatar
TECH Addict
iTrader: (37)
 
Joined: Feb 2006
Posts: 2,714
Likes: 1
From: Tomball (H-Town), TX
Default

Originally Posted by streetwarrior96
speak for your car Mine runs like firebat out of hell and back to get more
haha so does mine

bad 02, 2 burned wires with oil spraying out of my valve cover almost catching my car on fire i was still smoking tires through 3 gears
Reply



All times are GMT -5. The time now is 04:02 PM.

story-0
6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'

Don't get dad new socks or a grill brush this year.

By Brett Foote | 2026-06-09 14:55:56


VIEW MORE
story-1
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

Slideshow: We take a close look at the ONE and Artidiag 800BT2 diagnostic tools from Topdon and the reasons to buy one over the other.

By Pouria Savadkouei | 2026-05-28 11:05:11


VIEW MORE
story-2
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

Slideshow: The controversial Ferrari F6 swaps its original flat-12 for a Corvette Z06-derived LT4 V8 and sends power to four rear wheels through a custom-built drivetrain.

By Verdad Gallardo | 2026-05-26 18:23:54


VIEW MORE
story-3
7 Most Reliable High-Performance Engines GM Has Ever Built

Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.

By Verdad Gallardo | 2026-05-21 16:45:27


VIEW MORE
story-4
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-5
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-6
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-7
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-8
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-9
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE