89 K5 Blazer low idle/ surge problem
#1
89 K5 Blazer low idle/ surge problem
Ok heres the story, had a low idle and it would sometimes stall and die at a stop and while driving it would kinda surge or pulse up and down which felt like someone bumping into you constantly.
So i replaced the tb gasket and put a new fuel presure regulator kit on it. the old kits spring was rusted in two and looked really bad. Now when I drive it I can still very slightly feel the same pulse or bumping, its faint but still there. What should I do next? maybe buy an entire new regulator? or do i need new injectors?
It still wants to die at a stop as well. Not sure why.
Any help would be great
Thanks
So i replaced the tb gasket and put a new fuel presure regulator kit on it. the old kits spring was rusted in two and looked really bad. Now when I drive it I can still very slightly feel the same pulse or bumping, its faint but still there. What should I do next? maybe buy an entire new regulator? or do i need new injectors?
It still wants to die at a stop as well. Not sure why.
Any help would be great
Thanks
#2
RE: 89 K5 Blazer low idle/ surge problem
I would remove and clean the EGR valve. It is possible that it is leaking past, giving you inconsistent O2 sensor readings.
#3
RE: 89 K5 Blazer low idle/ surge problem
Which one is the EGR? Im new to the tbi system.
#4
egr is the funky lookin thing bolted directly to the passenger side of the intake slightly behind the tbi that has a single vacuum line runnin to the little 3 pack of sensors on a bracket
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