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Dave Nova
Dave Nova, Chevrolet Technician
Category: Chevy
Satisfied Customers: 19452
Experience:  ASE Master Certification. GM World Class Certification
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2005 chevy impala had a minor tune up done. Car lose power

Resolved Question:

2005 chevy impala had a minor tune up done. Car lose power when its going up hill.
Submitted: 9 years ago.
Category: Chevy
Expert:  Dave Nova replied 9 years ago.

There are 2 possibilities, 1. the fuel pump is weak, connect a fuel pressure gauge and test fuel pressure. 2. The catalytic converter is restricted, disconnect exhaust pipe from manifold and test drive. If power is restored, the catalytic converter is the problem.

The catalytic converter is covered by GM up to 80,000 miles. This is a common problem on these cars.

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