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Cutting out under load full, steering lock?

Tiny
RMILZ0010
  • MEMBER
  • 2007 MAZDA CX-7
  • 2.3L
  • 4WD
  • AUTOMATIC
  • 242,600 MILES
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?
Saturday, February 4th, 2023 AT 1:50 AM

5 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,602 POSTS
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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Saturday, February 4th, 2023 AT 12:19 PM
Tiny
RMILZ0010
  • MEMBER
  • 3 POSTS
Will this also no speed build up (limp mode)?
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Saturday, February 4th, 2023 AT 2:43 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,602 POSTS
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.
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Sunday, February 5th, 2023 AT 1:23 PM
Tiny
RMILZ0010
  • MEMBER
  • 3 POSTS
Have used an obd2 and no codes at all.
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Sunday, February 5th, 2023 AT 3:20 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,602 POSTS
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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Monday, February 6th, 2023 AT 1:04 PM

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