Engine stalling when transmission is in park?

XDEX34

MEMBER
2005 TOYOTA COROLLA
1.3L
4 CYL
2WD
AUTOMATIC
127,000 MILES

Had a bank 1 o2 sensor code, converter code, coolant code, and evap code; replaced sensor, cleared coolant because it had run low at one point and has been filled, replaced gas cap, and cleared all codes, ran through drive cycle and no codes.

Replaced ignition relay, replaced ignition switch, put in a new battery... Still stalling in park... Even faster to stall when the A/C is running. Does not stall in other gears. Help!

4 Replies

KEN L

MASTER CERTIFIED MECHANIC
47,643 POSTS

This sounds like the torque converter has come apart internally not allowing the engine to "freewheel" I could tell for sure if you upload a short video of the car going into park and stalling.

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Monday, August 7th, 2023 AT 12:15 PM

XDEX34

MEMBER
2 POSTS

I had to turn the A/C on to shut off the engine in the first video. It does also grind a bit in reverse (second video) and when I put it in park, it shut off. The grinding in reverse has been for a while now, but the stalling in park is new this week.

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Monday, August 7th, 2023 AT 6:02 PM

KEN L

MASTER CERTIFIED MECHANIC
47,643 POSTS

Thanks for the videos, they help. I don't think it is the torque converter which is good. It seems more like the throttle body needs service or you have a vacuum leak.

here are three guides to help us fix the problem with images below to help you as well:

https://www.2carpros.com/articles/stall-at-idle

and

https://www.2carpros.com/articles/throttle-actuator-service

And use guide when the engine is cold only:

https://www.2carpros.com/articles/how-to-use-an-engine-vacuum-gauge

Check out the images (below). Please let us know how it goes.

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