i know that when i had it all the way pushed down and secure i did not get the check engine light. i hooked mine back up and the car seems to like it better plus i got crappy mpg witout it.
im just wondering cuz i did the 1/2 way thing and it worked great before i swapped computers (auto to manual swap) but with the new computer im throwing the 334 code which is - DPFE or EVP circuit above the closed limit of 0.67 volts.
i think ill try pushing it in farther and see if that stops the C.E.L.