I have an 03 Cadillac Deville base sedan. I am having to little problems and I can't seem to figure out what is causing them. The first one is on the highway going about 63-73 mph every once in a while it will jerk a little bit. It doesn't jerk forward, its more like it loses a little bit of power for a split second and then it goes back to normal. Sometimes i can drive for a while and it doesn't do it and sometimes its every few minutes. Sometimes you can feel the jerk pretty easily and sometimes its harder to notice but I can feel it every time. If I go 60mph the jerking doesn't occur or even if I go 74mph it never occurred. I have the engine codes p0101 and p0410. For the p0101, I replaced the mass air flow sensor and reset the code but the code came back on. I have took my car to 3 different mechanics. Two of them said its a faulty MAF sensor and to order another one and another one said my catalytic converter is clogged and is causing the MAF sensor to go off. Idle is fine and I never hear any misfires. The only time I ever see a problem is on the highway. My air filter is also good. My other problem is I feel like the acceleration is slow at times. For 275 horsepower, i think it should have a better kick then what it has. It hard to get the RPMs up most of the time too. I can get it up to 5500 rpms but it takes longer than it should. So I was just wondering what can cause these issues and most important how can I fix these issues? Was wondering if it has anything to do with the torque converter clutch?? O2 sensors?? Leaks?? Although I can't really hear any leaks or see any. Everything under the hood looks pretty good to me. Just give me any suggestions on what it could be please. I;ve been going through this for months and can't seem to get a solution. I also can hear some kind of humming noise also. It kind of goes away when engine gets warmed up.
Mar 5, 2015 at 2:19 PM
