question... when i was replacing a few parts for maintenence to my jeep and possibly help smog test i developed a new problem.... i think. ok ive replaced alot but these are the things i last replaced before this happened. o2 sensor (denso- same as previous one installed). fuel pressure regulator.changed spark plugs (champion oem's) gapped .035"
PROBLEM: when i start the jeep for the first time in the morning it idles perfect then if i give it light throttle the engine stumbles or kinda like chokes but NEVER dies or even start to die.immediately after letting off the pedal it idles like nothing is going on then i give it light throttle and it does it stumbles again. then i left off the pedal and it still idles good. this only lasts no more than 10secs then after that its GREAT ALL DAY til i park it for awhile or til morning. did i do something wrong maybe??