2.0L LSJ Performance Tech 205hp Supercharged SS tuner version. 200 lb-ft of torque.

tuning problems

Thread Tools
 
Search this Thread
 
Old Apr 10, 2010 | 11:17 AM
  #26  
Dirty25RS's Avatar
Senior Member
 
Joined: 09-22-09
Posts: 757
Likes: 0
From: Akron, Ohio
if ur having problems with 3 & 4 it could be a bent 3-4 shifter fork. common problem in many different makes and models of cars.
Reply
Old Apr 10, 2010 | 11:25 AM
  #27  
EatonTVS07's Avatar
Senior Member
iTrader: (4)
 
Joined: 08-13-06
Posts: 14,675
Likes: 0
From: KCMO
It's the pedostache, I'm sure of it.

Was the brake peddle spoungy as well?

P.S. You'll ahve to show me how to get to the place that sells meth, i've never been there.
Reply
Old Apr 10, 2010 | 11:34 AM
  #28  
rnjmur's Avatar
Senior Member
 
Joined: 06-06-06
Posts: 2,729
Likes: 9
From: O Fallon, MO
Originally Posted by Dirty25RS
can someone answer my question about where the IAT is measured in a cobalt? I might be able to help.
I am pretty sure that the IAT1 is measured at the MAP/BAR sensor on top of the SC housing. The IAT2 is measured at the MAP sensor at the top of the intake manifold.



Originally Posted by Dirty25RS
^like i said, 20psi makes sense with the high IATs. Hotter air is higher pressure in an enclosed volume like an intake. ideal gas law.
20 psi is way to high. When the aircharge inside the intake is hot the pressure will drop, not rise.



Originally Posted by BlackJackSS
What's weird is that I can shift into third just fine if I star a 40 roll in2nd. Then 4th ***** out on me the same way 3rd was from a dig. So I don't think it's linkage or and thing. I'm gonna replace all the clutch fluid. And see how that goes for me.
Originally Posted by Dirty25RS
if ur having problems with 3 & 4 it could be a bent 3-4 shifter fork. common problem in many different makes and models of cars.
I would agree that the chance of a bent fork is more likely.

In order to change the clutch hydraulic fluid you need to replace the brake fluid and bleed all the brakes as well (clutch and brake fluid is shared system).
Reply
Old Apr 10, 2010 | 11:58 AM
  #29  
Dirty25RS's Avatar
Senior Member
 
Joined: 09-22-09
Posts: 757
Likes: 0
From: Akron, Ohio
Originally Posted by rnjmur
20 psi is way to high. When the aircharge inside the intake is hot the pressure will drop, not rise.
Thats not how physics works.

higher temperature yields higher pressure. because each molecule in the air has more kinetic energy, they are moving around faster. So when the impact the sides of the container they are in the force is higher. Normalize the force of all these molecules bashing into the walls of the container based on container square area and you have lbf/in^2. Pressure.
This pressure rise with respect to temperature can be very accurately predicted using the ideal gas law.

Pv=kRT

P=pressure
v=specific volume (reciprocal of density)
k=1.4 for air, its a constant, a measure of how "ideal" the gas is
R=is the ideal gas constant, really doesn't mean anything
T=temperature in Rankin or Kelvin pending on if ur in english or metric units.

http://en.wikipedia.org/wiki/Ideal_gas_law

Just the way it is....
Reply
Old Apr 10, 2010 | 03:24 PM
  #30  
BlackJackSS's Avatar
Thread Starter
Senior Member
iTrader: (2)
 
Joined: 06-09-09
Posts: 1,218
Likes: 0
From: Grain Valley, MO
All that matters is my car only boosts to 16 psi or so and the iat2s r down around 105 when it's 75 out and I'm running the **** outta the car at the track. I just need to put in new fluid for the brkes and clutch. It's not the shifter linkage. I checked.
Reply
Old Apr 10, 2010 | 03:35 PM
  #31  
ralliartist's Avatar
Senior Member
 
Joined: 10-06-05
Posts: 10,944
Likes: 2
From: Seneca, South Carolina
LOL, I'll be lucky to hit 12psi on a 2.5 pulley once mine is back together.
Reply
Old Apr 10, 2010 | 03:41 PM
  #32  
JapEatr's Avatar
South Central *********
iTrader: (9)
 
Joined: 05-14-05
Posts: 6,148
Likes: 48
From: Texas
Originally Posted by Dirty25RS
Thats not how physics works.

higher temperature yields higher pressure. because each molecule in the air has more kinetic energy, they are moving around faster. So when the impact the sides of the container they are in the force is higher. Normalize the force of all these molecules bashing into the walls of the container based on container square area and you have lbf/in^2. Pressure.
This pressure rise with respect to temperature can be very accurately predicted using the ideal gas law.

Pv=kRT

P=pressure
v=specific volume (reciprocal of density)
k=1.4 for air, its a constant, a measure of how "ideal" the gas is
R=is the ideal gas constant, really doesn't mean anything
T=temperature in Rankin or Kelvin pending on if ur in english or metric units.

http://en.wikipedia.org/wiki/Ideal_gas_law

Just the way it is....

RNJ.. is probably confusing pressure with density
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
taintedred07
2.0L LNF Performance Tech
32
May 28, 2022 03:47 AM
717ssbalt
2.0L LNF Performance Tech
9
Oct 2, 2015 04:01 PM
anotherslowlnf
Parts
15
Sep 29, 2015 03:52 PM
DocSvensk
2.0L LNF Performance Tech
7
Sep 27, 2015 02:24 PM
Adiaz1ss
Problems/Service/Maintenance
4
Sep 26, 2015 11:51 PM




All times are GMT -4. The time now is 11:43 AM.