2000 Chevrolet Prizm Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 2000 Chevrolet Prizm
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2000 Chevrolet Prizm ProblemsRough Idle and Backfiring Engine with Check Engine Light
The Chevrolet Prism has a known issue with the valves that if left unchecked, will cause burned valves and engine performance issues. This issue does not affect the Geo Prism.
The engine ‘breathes’ through valves that are pushed open by the camshaft, and closed by springs. When valves are closed, they seal against a valve seat. In this vehicle, the valve seat is too soft, so after the valve contacts it thousands of times, it becomes crushed. Once it is crushed, the valve can no longer make a proper seal, and the valves erode due to extreme temperature (burnt valve).
Symptoms related to this issue:
- Rough idle
- Backfiring through exhaust or intake
- Illumination of the check engine light
- OBD Trouble Codes P0300, P0301, P0302, P0303, P0304
- Loss of power
- Engine Stalling
To repair the burnt valves, the cylinder head must be removed and rebuilt, which is a costly internal engine repair, however, this issue can be prevented through inspection and adjustment of valve clearances every 40,000 miles.
A Loose or worn gas cap may cause Check Engine Light to illuminate.
The spark plugs should be replaced every 100,000 miles. Our technicians recommend replacing the spark plug wires also at this time.
2000 Chevrolet Prizm QuestionsCheck engine, code PO420?? (1 answer)
About 125,000 miles on it. Owned it since 90k roughly. Every once in a while the engine light would blink on, seemingly random (solid 55 straightaways, usually), then on next day startup or so, would be off. This time it turned on about a week after my last oil change (due for another soon), and ...
This this something I can fix myself and what is the problem