2003 Sliverado, rough idle in cold weather. code 0300. Replaced Mass Airflow sensor, no change. It only seems to happen in weather below 18 degrees
Country: United StatesMake: ChevroletModel: Silverado 1500Year: 2003Engine: 4.8
MAss Air flow sensor. I have a AMe large air filter
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It souns like you have a intake gasket problem. When the engine is cold and missing, run water over the intake manifold and check for an RPM change. If a change is noted, replace the intake manifold gaskets and check the manifold for warpage. Let me know if you have questions, thanks.
I get a 0300 code mis fire. I was going to run BG fule injector cleaner. Should I try the manifold test first?
Ya, I dont think its a fuel injector problem......Thats not usually effected by temp and woudl only cause a specific cylinder to misfire. Let me know if you have questions, thanks.
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