Cutting out under load full, steering lock?

2007 MAZDA CX-7
242,600 MILES • 2.3L • 4WD • AUTOMATIC
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RMILZ0010
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My car vehicle above US idling rough with low jumpy revs, when A/C is on, and I lock steering full either way the car stalls. Have replaced every sensor, new timing kit, coils, plugs, leads, fuel pumps everything. Any ideas?
Feb 4, 2023 at 1:50 AM
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STRAILER
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Yep, this happens when you have a vacuum leak, or the throttle body needs to be serviced. here are two guides to help us fix the problem with instructions for you can in the images below:

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

and use this 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 what happens.
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Feb 4, 2023 at 12:19 PM
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RMILZ0010
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Will this also no speed build up (limp mode)?
Feb 4, 2023 at 2:43 PM
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STRAILER
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Yes, in limp mode the engine will not rev. have you run the trouble codes?

This guide can help:

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Please go over this guide and report back.
Feb 5, 2023 at 1:23 PM
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RMILZ0010
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Have used an obd2 and no codes at all.
Feb 5, 2023 at 3:20 PM
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STRAILER
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I have seen a bad throttle bore or throttle pedal sensor go out and cause this issue with no codes. I would try cleaning the throttle bore first. Check out the images (below). Please let us know what happens.
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Feb 6, 2023 at 1:04 PM