I have a 2009 Caliber SXT 175,000 miles. In the past it would hiccup or jerk once on acceleration and I always asumed it was cheap gas and started using only 89 octane and have not had much problem with that until recently again. It is now very bad and jerk more than once when taking off. Over the last few years I have replaced the alternator twice & the intake manifold. It started getting bad after my wife put gas in. I put Sea Foam in the tank and changed the spark plugs and air filter and it didn't make it any better. I am reading a lot about the throttle body in other forums and wondered if anyone else had this issue and was able to fix it.

 

Welcome to the forum.
Have you tried checking for codes? (even if the check engine light isn't on)

 

Yes I have my own scanner and have checked and there are no codes. I must have gotten some bad gas. My wife put some 93 octane in and its not doing it now. I am still going to clean the throttle body and spray sea foam in the vacuum lines.