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What are the common issues with the Chevy Lumina?
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4 answers
★ Top Answer
A common issue with later-model Chevrolet Luminas is the failure of the Exhaust Gas Recirculation (EGR) system. The problem arises from blocked passages in the intake manifold and affects all Lumina engines, not just the 3.1-liter one. In addition, there are reports that the lower intake manifold gaskets wear out quickly. When replacing the manifold gaskets, it is advisable to use a stronger type than the original. A defective EGR valve can disrupt the flow and function of the EGR system, resulting in performance issues such as power loss, decreased acceleration, and lower fuel efficiency. EGR valves can get stuck either 'open' or 'closed' because of a buildup of soot particles, carbon deposits, and dirt from fuel.
More answers
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The top issues that occur with Chevy Luminas typically involve oil leaks from the engine and transmission problems causing rough shifting.
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The main issue isn't just the EGR in the Lumina engine. The cooling system is constructed using cheap metals that tend to crack over time. One particularly common problem is the radiator cracking on the exit side. Sadly, the cooling system on the high-end LTZ model with the 3800 V6 engine is a major concern.
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We have found that our 99 Lumina LTZ with a 3800.V6 engine has been experiencing various costly problems with its cooling system. The components are made of cheap plastic instead of metal, leading to issues such as cracking in the radiator's exit side. However, the most significant problem lies with the intake, the large black unit located atop the engine block.
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