Oldsmobile Alero Chugging- Low Tire Light

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Oldsmobile Alero Chugging. Replaced fuel filter and spark plugs. Question:
the car chugs when you go 35 MPH or higher like it not getting gas or something. It has gotten worse since i changed spark plugs. What can be cauging this problem? The check engine light is also on.

Answer:
There are many things that can cause this chugging condition. It could be ngine related or even transmission related. If it is engine related, could be corroded ignition coil towers under the spark plug wire boots, low fuel pressure caused by a plugged fuel filter or weak fuel pump, plugged catalytic converter, faulty MAF(mass airflow sensor).

But these things will usually cause a check engine light and codes to be stored. Possible code P0300 engine misfire. Your Oldsmobile could also be having transmission related problems. I would suggest at least getting the codes scanned or better yet having a mechanic drive it to determine where to start diagnose. He would be able to tell right away where to start the diagnosis. I Have had transsmission problems that feel like an engine Driveability problem and an experienced mechanic may be needed to determine this.

Question:
I recently (in the past month) went to the shop to get the codes reset on my car to cure the idling it was doing and I also had my ac fixed also. As of 2 days ago my car has started idling up and after it does that then know goes back down and the car starts to jump lightly and then it will cut off completely. Could this be a battery issue or something more? Oldsmobile Alero 2001. Low tire air and service engine soon lights. All codes were recently reset. The codes were reset so to reduce the idling of the car. Because that was supposedly the issue.

Answer:
I would have the throttle position sensor (TPS) checked out. I bet that is your problem. When they go bad, they will cause erratic idling, surging, and/or stalling. There is a spring inside the sensor that breaks and then there is no tension on the sensor to keep it correctly timed with the throttle blade. A code may be stored in the PCM also.

When there is a mismatch, even over a bump this can happen, the idle can rise dramatically, or get so low the car will die out. Also give the wires at the TPS a good tug to see if any break. Sometimes the wwires won't snap but just stretch a little. This indicates that the copper wire inside the colored insulation is broken or even just hanging on by a few strands. If so, repair them, clear the codes and take it for a test drive.