Steering wheel won't turn

Xavier208

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I recently bought a wrecked 2019 mustang gt premium that was hit on the front passenger side fender then was pinned into a center divider wall. I replaced the strut, control arms, and spindle on the driver side (passenger side is fine) but when I start the car up the wheel will not turn. Also, when I attempt to turn the wheel, there is a winning sound that comes from what seems like the underside of the car. It's louder when attempting to turn to the left. I'm 99% sure it is something electrical (I could be wrong). Any advice helps thanks.
 

Rod Schneider

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The whining noise is probably the electric motor inside the power steering rack. The rack may have gotten damaged in the accident.
 
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Xavier208

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The whining noise is probably the electric motor inside the power steering rack. The rack may have gotten damaged in the accident.
Thank you, I'll look into that. Would you happen to know anything about my steering wheel being locked? There's a slight bow in the rack and pinion on the driver side where it connects to the strut do you think that would be the issue?
 

Cobra Jet

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Thank you, I'll look into that. Would you happen to know anything about my steering wheel being locked? There's a slight bow in the rack and pinion on the driver side where it connects to the strut do you think that would be the issue?
Aside from the EPAS rack being damaged either externally or internally, that rack not only has a motor inside of it, but also circuit board and an actual rubber belt. The rubber belt is serviceable. So if the motor or circuit board isn’t damaged, it could be a simple broken belt or the belt jumped off the cogged gear from the impact. See here:
https://www.mustang6g.com/forums/threads/help-identifying-eps-belt-size.127584/#post-2642940

Yes, there is an internal power steering belt (most do not even know it exists). Above link contains pics and belt sizing info.

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Here’s some other helpful links I had posted on this site in another thread regarding locked EPAS units; last post update in this thread says the OP found there was a loose connection in a harness which had created a fault (no steering).

https://www.mustang6g.com/forums/th...ower-in-their-steering-while-on-track.127352/

This one touches on corroded battery cables leading to malfunctioning EPAS:
https://www.mustang6g.com/forums/threads/need-to-replace-my-rack.132063/#post-2724002

This thread has good troubleshooting info if needed:
https://www.mustang6g.com/forums/th...king-help-from-a-tech-ideas-on-causes.120707/

This thread has some insight to what is involved with removing the rack for repair effort:
https://www.mustang6g.com/forums/threads/need-help-steering-rack-replacement.129096/

This thread has some excellent TECH repair and photos of the EPAS with it apart and where the EPAS circuitry is located; thread also discusses FORSCAN flashes:
https://www.mustang6g.com/forums/th...ategies-calibrations-vbf.112549/#post-2611462

Good luck and keep us updated!
 

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