Hello, Im fairly new to the site and I have an 03 Isuzu Ascender with the 4.2l. It has 69k on it and I just noticed that in park or neutral you cannot rev it past about 2400rpm. Now, I know its fly-by-wire and its prolly a safety feature as to keep it from overreving, but I just wanted to make sure. Also, it does not climb rpms very fast at all when you do this. It does however seem to drive just fine. Forgive me if this is a stupid question!