I have a 96 yukon with 5.7 vortec,127k miles,runs great going down road but when coming to stop the idle surges sometimes and wants to stall out.no engine codes are being set,acts like a vacume leak.I did notice the right front of the intake gasket is weeping anti freeze,could it be loosing vacume there and causing the idle to have a hard time controlling.Ive already changed out iac and throttle position sensor,[email protected]
96 yukon idle control problem,help needed
- Thread starter tomlbby
- Start date
Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.
SunlitComet
OBS Jedi-Do Good
yes and it could be ingesting anti-freeze as well fix it asap.
problem solved
I found the problem with my idle today,i pulled an oldschool stunt.with the motor running i sprayed starting fluid around the intake and idle changed when i sprayed it where the fuel lines go into the intake.I removed the upper intake and found that the previous owner must have done some work with the fuel spider and when he reinstalled the upper intake he cut the gasket that goes around the injector housing.i found what was left laying in the intake plenum.I also did a pressure check on my cooling system and it help good pressure so my intake gaskets not leaking .runs,and controlls idle great now at all speeds.
I found the problem with my idle today,i pulled an oldschool stunt.with the motor running i sprayed starting fluid around the intake and idle changed when i sprayed it where the fuel lines go into the intake.I removed the upper intake and found that the previous owner must have done some work with the fuel spider and when he reinstalled the upper intake he cut the gasket that goes around the injector housing.i found what was left laying in the intake plenum.I also did a pressure check on my cooling system and it help good pressure so my intake gaskets not leaking .runs,and controlls idle great now at all speeds.
SunlitComet
OBS Jedi-Do Good
if it is not leaking then why are you seeing coolant on the manifold.
SunlitComet
OBS Jedi-Do Good
The original gaskets do not hold well as they age I would replace them anyway. Afterwards they will be in a for better condition to handle stress. Do not take chances with fluid additions like block seal.
