04 Mach 1 stalling and occasional studder under load
A few months ago i purchased an 04 mach 5 speed with 36k on it. On the first ride home and at random other times if i come out of gear and leave it in neutral while coming to stop the car will stall. I did some research on this and came to the conclusion that it was probably because the previous owner removed the screen by the MAF sensor when installing a K&N cai. This didn't seem to be too big of an issue to me so I didn't really do anything about it. However when full throttle, occasionally it feels like there is a misfire or some sort of hesitation in the motor. This doesn't happen all the time but when it does it is 2-5 times throughout the rpm range of each gear. Im not sure if this could be from the MAF not ahving the screen anymore or if it could be something more serious like a faulty fuel pressure regulator or injector. Any input would be greatly appreciated. The mach has the K&N cai, bbk off road x pipe, magnaflow catback system, 4.10 gears, a short throw shifter and a diablosport inTune programmer.