Buick Regal Owners & Service Manuals

Buick Regal: Description and Operation

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 Turbocharger System Description

Turbocharger Description and Operation A turbocharger is a compressor that is used to increase the power output of an engine by increasing the mass of the oxygen and therefore the fuel entering the e

 Crankcase Ventilation System Description

General Description A crankcase ventilation system is used to consume crankcase vapors in the combustion process instead of venting them to atmosphere. Fresh air from the intake system is supplied to

 Engine Component Description

Engine Description Cylinder Block The cylinder block is constructed of aluminum alloy by precision sand-casting. The block has 5 crankshaft bearings with the thrust bearing located on the second bear

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 Heated Oxygen and Oxygen Sensor Caution

CAUTION: Do not remove the pigtail from either the heated oxygen sensor (HO2S) or the oxygen sensor (O2S). Removing the pigtail or the connector will affect sensor operation. Handle the oxygen sensor carefully. Do not drop the HO2S. Keep the inline electrical connector and the louvered end free of

 DTC P2734, P2738, or P2739

Diagnostic Instructions Perform the Diagnostic System Check prior to using this diagnostic procedure: Refer to Diagnostic System Check - Vehicle Review the description of Strategy Based Diagnosis: Refer to Strategy Based Diagnosis An overview of each diagnostic category can be found here: R

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