'93 Celica GT 2.2L w/ Auto Trans. hesitates, jerks
'93 Celica GT 2.2L w/ Auto Trans., 84K miles. Once warmed up, vehicle hesitates and jerks when cruising at about 2200-3000 regardless of gear, A/C on/off, or "Power" button on/off. No impact on RPMs during hesitation. Press accelerator or lift-off and it stops hesitation. Did a tune-up and replaced throttle control sensor. Next idea?
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
Many modern vehicles will delay the shift position to allow rpms to increase, thus warming the engine up faster. As soon as the engine temp reaches the desired level, the transmission shift point resorts to the normal point.
This is an emissions issue, with the idea that a warm engine puts out lower emissions. This is also why when getting an emissions inspection in states that require it, they want the engine warmed up first.
At 24K miles, I would be hesitant to say the transmission fluid and filter need to be changed, but if it seems extremely noticable and objectionable, that would be the step I would take. Cold fluid is more viscuos, harder to push thru a clogged filter than a clean one. However, unless you've been towing a trailer a good bit, your mileage should be low enough that filter should not be an issue.
Is it manual or auto trans? If manual the gear lube is thicker when cold and the syncronizers tend to stick and not slide free for grind free shifting or for locking into gear.
If Auto trans if the jeep is warmed up setting then cycle the gears before driving. If that helps then the fluid is not getting through the valve body properly. It could be metal in the body or filter or cold seals are letting fluid by til the seals warm, expand and hold pressure. I'm assuming trans fluid is good, not old. One item that can lead to poor cold shift in an auto trans is a bad torque convertor. Since it seems to be a second gear issue the second section of the trans could have a bad seal. In an auto trans I'd take to a shop and have a cold pressure test done. They will tell which one is the problem.
I am glad my solution provided you with happiness. A gift, no, you do not need to do that. I appreciate the thought, though. The graciousness of a "FixYa" rating regarding my helpfulness would be GREATLY appreciated. That I all that I need form you. A happy Client. THAT is what FixYa is ALL ABOUT. Have a great week. Thanks again.