Originally Posted by
jamesmonter2
Ok so I still have no check engine codes since the ecu connection. I am still getting a stumble at throttle. I checked the fuel pressure at the rail and am getting 55 to 52 psi constant when idle and at open throttle and rev. So it seems fuel pressure is not an issue. I removed the throttle body, cleaned it and lubricated it, also put a new gasket and used gasket sealant on the o-ring and 2 maf sensor seals. Still same issue. I am beginning to think i have a bad MAF sensor possibly, unless anyone else has any other ideas?
I would not recommend the use of a gasket cement on an O-ring, especially one in a delicate spot that this one is. The O-ring should be allowed to fit into the groove freely so that it can seat evenly all around, sealant could possibly prevent this. I hope the O-ring was new, if not you could still have a problem.