Bank 1 is side no 1 cylinder is located on bank to is opposite Sensor 1 before cat sensor 2 after
SOURCE: 98 silverado codes po420,po430,po446
if the cat was pluggin you would see this as your going down the road it would not get to top speed .. They act up usually only run 40 top speed.
SOURCE: po430 code keeps coming back what is the fix an o2
this code in most cases is caused by a worn out catalytic converter, cats last about 100,000 miles on average
SOURCE: A recent scan indicated the
These are all transient symptoms, so I would not panic.
What I would suggest is putting in a tank of premium and fuel dryer.
A little water or cheap low octane gas can cause these symptoms.
If it happens again, a second try would be plug wires, because crossover in the wires will also do it.
Reducing plug gap will also make problems like this less noticeable.
You can go as low as .028".
Start with the cheap tries first, then worry about the more expensive things.
333 views
Usually answered in minutes!
×