[MrShoeBoy]

It wont always throw a code. Mine didnt and after going through everything else, I replaced it and the problem was fixed. I thought it was my ignition and took out the MDS box and was still there, then went through and put everything back to stock and still didnt fix it. After that I started going through and testing all the sensors and the MAP sensor was still with in spec but right at the bleeding edge of being ok. I replaced it and everything was fine after that. This was on an OBD1 system, the OBD2 might be a little different but the symptoms seem to be the same. Get out FSM and test the sensor and go from there.

AARON