Okay guys, need some help with this one. I just recently replaced the spark plugs last week, cleaned out throttle body and maf, and idler air control valve. I replaced the fuel filter today. But my car still hesitates upon acceleration. Not as bad as it did before, but still quite noticeable. Now, when it shifts, it kinda shifts hard into second gear, then my traction off light comes on, and stays on until I shut the car off, then turn it back on and it’ll go away. Just recently my service engine light came on, and I already knew I had to add oil, so I did. But it’s still on. Last time the oil was changed was about 5,000 miles ago. Any recommendations on what to do next would be greatly appreciated. Thank you. My car is a 1999 Pontiac Grand Am. 2.4 Liter. 

18 hours ago, Badge68 said:

Okay guys, need some help with this one. I just recently replaced the spark plugs last week, cleaned out throttle body and maf, and idler air control valve. I replaced the fuel filter today. But my car still hesitates upon acceleration. Not as bad as it did before, but still quite noticeable. Now, when it shifts, it kinda shifts hard into second gear, then my traction off light comes on, and stays on until I shut the car off, then turn it back on and it’ll go away. Just recently my service engine light came on, and I already knew I had to add oil, so I did. But it’s still on. Last time the oil was changed was about 5,000 miles ago. Any recommendations on what to do next would be greatly appreciated. Thank you. My car is a 1999 Pontiac Grand Am. 2.4 Liter. 

Well you’re going to need a OBD ll scan tool. It appears the traction control is coming on which reduces power output. This would kill acceleration. Which component it is would be a crap shoot without using a scan tool. Could be a wheel sensor, throttle switch, wiring etc...

Edited March 11, 20197 yr by Last Indian