Rough Drive & Low Idle After Installing New Battery 2006 4-Runner

Good Morning Folks- I don't know if anyone has experienced this before, but I recently installed a new battery in my 2006 4-Runner V8 LTD. I had it installed at a shop that I had been working with for many years. When I picked it up, the idle was rough, and actually cut out on me a few times because the idle dropped too low. It has since rebounded BUT still the idle is low (500) AND the engine idles louder and drives rough.(No pick-up)
I know my 4-Runner, and this just doesn't feel right.

I was planning to re-install the battery, and wanted to know if Toyota has published any "Drive-Ability Learning Steps" or a set of procedures for doing this so that the vehicle can re-learn?

I don't know what else could be causing this issue. It all goes back to the day the battery was installed (Probably Improperly)

My 4-Runner is pushing 150k miles, but it's a 4th Gen V8 and other than a slight rip in driver's seat, the vehicle is in great shape. I'm hoping it's something that can be corrected inexpensively.

Thanks for reading and I look forward to your feedback.

 

Welcome to the forum.

 

Welcome! Take it back to the place that installed the battery if it was good before they worked on it, it should be good after. If it’s not that falls on them to fix it.

 

If the MAF censor is in need of a cleaning and the ecu got reset with the battery being unhooked... the ecu could be in learning mode and is struggling due to the maf censor?

Just a guess. Can anyone comment on this guess?

 

Alot of Toyotas tweak out if you change the battery without a saver on the obd2 port. The computer needs to relearn the idle. What works for me is to let it run with the AC on while idling in gear for about 5 minutes, if that doesn't work take it back to the shop.