Tech Tip Corner
GM Low Air Flow Code 1985-1988
Trouble Code 34 2.8L GM F-Body (Camaro - Firebird)
If a repeated Trouble Code 34 is encountered (Air Flow Low), or instances of a lean
engine operating condition without a code present in the ECM memory it is advisable to
check for a cracked seam on the air intake silencer .
Located between the throttle plate assembly and the Mass Air Flow (MAF) sensor,
separation of the sonically welded seam allows false unmetered air to enter the
engine resulting in a lean condition. Repairs to the air intake silencer can be effected
by cleaning the cracked seam surface and resealing with a high temperature oxygen
sensor safe silicone RTV.
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