Notices
General Tech Good at troubleshooting? Have a non-specific issue? Discuss general tech topics here. IF YOUR QUESTION IS SPECIFIC TO A CERTAIN MODEL, IT DOES NOT GO IN THIS SECTION.

Suburban 2001 5.3 LS,No ECM codes on dash, motor starts, shaking-goes out

Thread Tools
 
Search this Thread
 
Old January 3rd, 2016, 4:38 PM
  #1  
CF Beginner
Thread Starter
 
simentae77's Avatar
 
Join Date: Jan 2016
Location: Tijuana Mex.
Posts: 7
Likes: 0
Received 0 Likes on 0 Posts
Unhappy Suburban 2001 5.3 LS,No ECM codes on dash, motor starts, shaking-goes out

Hello, I am new in this forum.
After spending a lot of money trying to solve my problem un Suburban 2001 LS 5.3 , still goes out in the mornings after having 15-60 seconds on, I changed sparks, wire set, gas and air filter , clean the sensor IAC and throttle body .
Any idea what is happening ?
No ECM codes.
I checked the resistance IAC ( 52.7 ohms terminals 1-2 and 3-4 ).
my Suburban remains stable after the third on.
Old January 4th, 2016, 2:27 PM
  #2  
CF Beginner
Thread Starter
 
simentae77's Avatar
 
Join Date: Jan 2016
Location: Tijuana Mex.
Posts: 7
Likes: 0
Received 0 Likes on 0 Posts
Default

Hey there, last night i removed the IAC sensor, cleaning again and pushed the tip a little to in. It was at 1.316" and put it at 1.125", this morning my Burb starts-shakes but raise the RPM automaticly.
any idea if I have to change he IAC even so there is no ECM codes? it is almost 150 usd.
Old January 4th, 2016, 7:40 PM
  #3  
CF Veteran
 
cleveland63b's Avatar
 
Join Date: Feb 2012
Location: nebraska
Posts: 1,433
Likes: 0
Received 0 Likes on 0 Posts
Default

I'm a little confused on what is going on- the vehicle starts and runs rough? or dies? or both?
Old January 4th, 2016, 9:16 PM
  #4  
CF Beginner
Thread Starter
 
simentae77's Avatar
 
Join Date: Jan 2016
Location: Tijuana Mex.
Posts: 7
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by cleveland63b
I'm a little confused on what is going on- the vehicle starts and runs rough? or dies? or both?
Thanks cleveland63b.
The vehicle starts, the rpms raise up to 800-900 and then starts to lowering to 300 then dies.
This happens all mornings and evenings when i leave the house and leave thd work (12hours).
Old January 4th, 2016, 9:47 PM
  #5  
CF Veteran
 
cleveland63b's Avatar
 
Join Date: Feb 2012
Location: nebraska
Posts: 1,433
Likes: 0
Received 0 Likes on 0 Posts
Default

do you have access to a scanner at all? or to check fuel pressure and volume
Old January 4th, 2016, 10:12 PM
  #6  
CF Beginner
Thread Starter
 
simentae77's Avatar
 
Join Date: Jan 2016
Location: Tijuana Mex.
Posts: 7
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by cleveland63b
do you have access to a scanner at all? or to check fuel pressure and volume
No, i do not have acces to a scanner i should pay 40-50 USD for check.
Alsó for check gas pressure.
I can go to autozone for free scan.
Old January 19th, 2016, 9:15 AM
  #7  
CF Beginner
Thread Starter
 
simentae77's Avatar
 
Join Date: Jan 2016
Location: Tijuana Mex.
Posts: 7
Likes: 0
Received 0 Likes on 0 Posts
Default

Hi there, any of you guys have the steps to change the gaskets for intake manifold of my suburban 2001 5.3 vortec (pictures will be OK).
This is the cause of my Burb problem.




All times are GMT -5. The time now is 5:57 AM.