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- Plano, Texas, USA
No, based on those reports by people who have had the fallen rocker arm, they hardly felt much performance difference until the engine fell into the limp mode. That's the danger of this problem. No codes were generated after the PCM update with fallen rocker arm either which makes me believe the PCM update actually masks some codes too.if the rocker arm has fallen it doesnt really matter if the pcm hides anything.
The engine will not run normally from mechanical standpoint. You will notice it.
Then its a new engine time most probably for new cars. Dealers usually dont take the time and most may not have the personnel onsite to remove head from engine block, check valves, seats, clearances, send to repair shops, etc.
The easier route for new cars is new engine to be put it.
Further, replacing the entire engine definitely is a lot more expensive and complicated than simply put the fallen rocker arm back to the position. The mechanic at the dealer has open the valve cover checking the falling rocker arm, it's a piece of cake to put the fallen rock arm back once he/she spotted the rocker arm has fallen.