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.

 

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.

 

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).

 

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.

 

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.