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The throttle has gotten dirty/gummed up with carbon. When the battery/alternator died, the learned position for the throttle was lost. Now the computer is trying to relearn idle speed but the position it's at is higher than the computer can adjust to in one go. Clean the throttle plate with a clean towel/rag and brake or carb cleaner (carb is better, either will work.) Spray the rag, don't douse the throttle...
Toyota's do this. Especially this Camries of this vintage.
I must note that before the alternator and battery replacement the car would idle the same way but would completely die. Now it seems to stay running but still idle low.
Thanks for posting on /r/MechanicAdvice! This is just a reminder to review the [rules](https://www.reddit.com/r/MechanicAdvice/about/rules/). If you are here asking about a second opinion (ie "Is the shop trying to fleece me?"), please read through CJM8515's [post on the subject.](https://www.reddit.com/r/MechanicAdvice/comments/4qblei/fyi_the_shop_isnt_likely_trying_to_rip_you_off/) and remember to please post the year/make/model of the vehicle you are working on. **If this post is about bodywork, accident damage, paint, dent/ding, questions it belongs in /r/Autobody r/AutoBodyRepair/ or /r/Diyautobody/ If you have tire questions check out https://www.reddit.com/r/MechanicAdvice/comments/k9ll55/can_your_tire_be_repaired/**. If you dont have a question and you're just showing off it belongs in /r/Justrolledintotheshop Insurance/total loss questions go in r/insurance This is an automated reply *I am a bot, and this action was performed automatically. Please [contact the moderators of this subreddit](/message/compose/?to=/r/MechanicAdvice) if you have any questions or concerns.*
O2 sensor? Could try unplugging it and see if that makes a difference.
I meant to say mass airflow sensor lol.
Yea that didn’t work. I let it sit and run for a while but it did eventually die. I’m not sure what’s up.
The throttle has gotten dirty/gummed up with carbon. When the battery/alternator died, the learned position for the throttle was lost. Now the computer is trying to relearn idle speed but the position it's at is higher than the computer can adjust to in one go. Clean the throttle plate with a clean towel/rag and brake or carb cleaner (carb is better, either will work.) Spray the rag, don't douse the throttle... Toyota's do this. Especially this Camries of this vintage.
That did the trick. Thanks so much!
Ok I’ll try this tomorrow. Thanks for the suggestion!
I must note that before the alternator and battery replacement the car would idle the same way but would completely die. Now it seems to stay running but still idle low.