Car Problem Reports

Pontiac Bonneville Engine Runs Lean Due to Vacuum Leak in EGR Tube

Pontiac Bonneville Problem
12 Reports
Me Too

Model Years Affected: 1993, 1997, 1998, 1999, 2000, 2001, 2002, 2003

Average Mileage: 201,333 mi (164,000 mi - 270,000 mi)


The EGR tube may develop an engine vacuum leak causing the engine to run lean. The Check Engine Light may or may not illuminate.

  • Visitor, , 270,000 mi

    Im having the same issue where the upper egr tube goes to the upper manifold. Its a newer astic manifold and cant find a replacement tube. I definitely have a leake there confirmed by the smoke and water test.

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