Problem Reports
Acura TL
Report: P04021 Code re: EGR Insufficient Flow
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021860, 1998 Acura TL, 90,000 miRookie
No need to replace the EGR Valve when this code appears; the valve itself is still good. The code appears because the flow is insufficient. Clean out intake manifold as shown here: http://www.youtube.com/watch?v=bOnoJFiwDKw
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