CPS is the most common stall on a gasser having "no codes"; it overheats, stops providing timing data and the computer shuts down before any code is registered. Starts and runs fine once cools off. Anything else that stops the engine usually degrades emisions such that a code is registered.

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Terry Allison
N. Calif. & Boca Chica, Panama

09' E320 Bluetec 77k (USA)
09' Hyundai Santa Fe Diesel 48k (S.A.)