97 Pontiac Grand Am 2.4 L 130K Miles
The car misfires, but there are no codes in the computer. misses when taking off (under load) and when at idle i can hear it missing in the exhaust. When starting up in the morning, often it will lose all power like my foot is not on the pedal at all and then correct and is fine until it starts skipping. Seems like the skipping under load gets worse the hotter the engine gets. its vital to note that it does not miss all the time and seems to be ramdom, but always worse when engine goes above the normal middle-of-the-gauge temp.
I've replaced the coil housing, done a complete tune up, checked fuel injectors, checked fuel pressure, and just gone around in circles with this thing. the only things that i can think of that are left are the coils (there are two) and the o2 sensors. but if its the o2 sensors i would have had a check engine light and a code. maybe i just answered my own question, but just wondering what else it could be. any suggestions??
The car misfires, but there are no codes in the computer. misses when taking off (under load) and when at idle i can hear it missing in the exhaust. When starting up in the morning, often it will lose all power like my foot is not on the pedal at all and then correct and is fine until it starts skipping. Seems like the skipping under load gets worse the hotter the engine gets. its vital to note that it does not miss all the time and seems to be ramdom, but always worse when engine goes above the normal middle-of-the-gauge temp.
I've replaced the coil housing, done a complete tune up, checked fuel injectors, checked fuel pressure, and just gone around in circles with this thing. the only things that i can think of that are left are the coils (there are two) and the o2 sensors. but if its the o2 sensors i would have had a check engine light and a code. maybe i just answered my own question, but just wondering what else it could be. any suggestions??
Sep 28, 2007 at 12:47 AM