02 truck won't stay running
12-22-2010, 10:49 AM
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02 truck won't stay running I have a 02 silverado with the 5.3, truck will start and idle but dies as soon as I step on the gas. I put a new Mas air on would bad o2 sensors cause this, or is it some other fuel problem?
12-23-2010, 06:20 PM
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Try this, with the engine idling, spray the intake gaskets on both banks (where intake manifold meets cylinder head) with carb clean or brake clean. If the engine suddenly dies or starts missing, the gaskets are leaking. Otherwise I would look towards o2 sensors.
12-23-2010, 10:00 PM
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could be a low fuel pressure issue too, if it's starting and idleing normally then it's probably not a vaccuum leak. I would be looking at somthing besides 02 sensors too, highly unlikely that both upstream o2's went bad at the same time, and they usually set thier own performance codes when they do go bad.
