LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Car turned a code

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Old Jan 31, 2009 | 12:07 PM
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Default Car turned a code

Car has been sitting all winter except for the 2 week start up and run till it gets up to temp all the way. The last time it turned a SES code. Had it checked P0400 EGR air flow malfunction. What needs to be done?
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Old Feb 1, 2009 | 07:08 PM
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All I was wondering if a new EGR would fix this problem. Thanks for all the help.
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Old Feb 1, 2009 | 07:14 PM
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Maybe, maybe not. If the valve is not working due to the diaphragm leaking, then you would need a new valve. If the passages are just clogged up, you need to unclog them.
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