Bad Mass Air Flow Sensor?

[deknight]

First off, I have a 04 Sport, 5 speed, 4-cylinder. Would a bad mass air flow sensor cause my Liberty to buck/jolt slightly when I accelerate in first gear? It only happens when the engine in warm and the outside air temperature is warm as well. The dealer thought it was the clutch, then after $1600 later it still does it. My uncle said it sounds like the engine, so I changed the spark plugs (ngk) and air filter, ( I was using k&n, but I stopped thinking that maybe I over oiled it). And it drove great for about 6 months. Now its doing it again.... so I changed the spark plugs again, and after about one month its doing it again.... Any ideas? Thanks

 

[memphisgrace]

It could. When the mass airflow sensor went out on my Monte it acted similar. It was still under warranty so I took it to the dealership. They looked at it, swore that it was due to my security system and sent me on my way. I got a few miles away from the dealership, just far enough for the car to really warm up, and it started again, then stalled and would not start.

 

[JeepJeepster]

It would probably throw a code if the MAF sensor was bad. I was thinking maybe something is wrong with a coil since it stops after you change the plugs but if it was mis-firing it would also throw a code.

Of course Ive got to throw the 'it may be bad gas' out there.

 

[deknight]

I checked my codes and so far nothing has come up. After the whole new clutch fiasco, I was sure it was the spark plugs because it was so bad the jeep would really stumble, even when I turned on the a/c. I changed out the cheap $0.98 Champians the dealer put in and everything seemed fine. I guess it could be bad gas, but I buy gas from so many different stations they would all have to be bad.

 

[offrovering]

did you try cleaning the maf? maf's dont always throw a code, though they usually do.

does anything make it go away? like after a bit of driving, or once it is warm, it always does it?