Engine Performance problem
2004 Chevy Silverado V8 Two Wheel Drive Automatic 34000 miles
I have a 2004 silverado 1500 5.3L that I took to the dealership I purchased it at to have it checked. It was ideling very rough. When they ran diagnostics on it, it came back with P0300 code and missfire counts on cylinders 1, 3, 5, 7. (The entire left bank) Cylinder 1 had 40,000 missfires and they intermittenly decreased to 16,000 on cylinder 7.
This thing idles rough, at road speeds it's fine.
I took the throttle body off and cleaned it really well, checked for vaccum leaks on the intake manifold. No problems I could find there. Spark pllugs are all good.
The service techincian had no clue what to do with it.
I searched on the net and found that this is becoming a problem with this motor, but no one seems to be able to figure out how to fix it.
You guys have any clues?
have the same problem?
Saturday, March 7th, 2009 AT 3:34 PM