# Mechanics: Broken Rack and Pinion

**URL:** <https://boards.straightdope.com/t/mechanics-broken-rack-and-pinion/664461>\
**Category:** Factual Questions\
**Created:** [July 25, 2013, 6:28am UTC](https://boards.straightdope.com/t/mechanics-broken-rack-and-pinion/664461 "2013-07-25T06:28:13Z")\
**Posts on this page:** 9\
**Page:** 1

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**Author:** ![IceQube](https://avatars.discourse-cdn.com/v4/letter/i/dfb087/32.png) [@IceQube](https://boards.straightdope.com/u/IceQube)\
**Post date:** [July 25, 2013, 6:28am UTC](https://boards.straightdope.com/t/mechanics-broken-rack-and-pinion/664461/1 "2013-07-25T06:28:13Z")

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Is it dangerous to drive around with a broken rack and pinion?

How much would it cost for it to be repaired?

I have a 1999 Toyota Sienna.

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**Author:** ![simple\_homer](https://avatars.discourse-cdn.com/v4/letter/s/9de0a6/32.png) [@simple\_homer](https://boards.straightdope.com/u/simple_homer)\
**Post date:** [July 25, 2013, 7:33am UTC](https://boards.straightdope.com/t/mechanics-broken-rack-and-pinion/664461/2 "2013-07-25T07:33:41Z")

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> [@IceQube](#):
>
> Is it dangerous to drive around with a broken rack and pinion?
> 
> How much would it cost for it to be repaired?
> 
> I have a 1999 Toyota Sienna.

Probably .  
In what way is it broken ?

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**Author:** ![snailboy](https://avatars.discourse-cdn.com/v4/letter/s/97f17d/32.png) [@snailboy](https://boards.straightdope.com/u/snailboy)\
**Post date:** [July 25, 2013, 8:37am UTC](https://boards.straightdope.com/t/mechanics-broken-rack-and-pinion/664461/3 "2013-07-25T08:37:27Z")

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The rack and pinion is used for steering. You didn’t say how it’s broken, but if it goes out completely, it won’t be a good day for you. I had one go out one time and I was fortunate that I was doing about 30 mph and the vehicle steered itself to the right where there wasn’t a ditch. It’s easy to imagine how that could’ve been worse.

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**Author:** ![jz78817](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/jz78817/32/1028_2.png) [@jz78817](https://boards.straightdope.com/u/jz78817)\
**Post date:** [July 25, 2013, 9:24am UTC](https://boards.straightdope.com/t/mechanics-broken-rack-and-pinion/664461/4 "2013-07-25T09:24:21Z")

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> [@IceQube](#):
>
> Is it dangerous to drive around with a broken rack and pinion?

YES

> [@](#):
>
> How much would it cost for it to be repaired?
> 
> I have a 1999 Toyota Sienna.

More than a few hundred, less than a few thousand.

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**Author:** ![JerrySTL](https://avatars.discourse-cdn.com/v4/letter/j/e274bd/32.png) [@JerrySTL](https://boards.straightdope.com/u/JerrySTL)\
**Post date:** [July 25, 2013, 1:02pm UTC](https://boards.straightdope.com/t/mechanics-broken-rack-and-pinion/664461/5 "2013-07-25T13:02:46Z")

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In general: YES! It’s probably dangerous.

However how exactly is it broken? A small leak? A large leak? One wheel turns but the other doesn’t? Inquiring minds want to know.

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**Author:** ![Gary\_T](https://avatars.discourse-cdn.com/v4/letter/g/3ec8ea/32.png) [@Gary\_T](https://boards.straightdope.com/u/Gary_T)\
**Post date:** [July 25, 2013, 3:15pm UTC](https://boards.straightdope.com/t/mechanics-broken-rack-and-pinion/664461/6 "2013-07-25T15:15:52Z")

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“Broken” is a useless, essentially meaningless, term in this context. If the rack and pinion were truly broken I’d expect a symptom so severe that no one would consider driving the car.

So please, what exactly is the problem? What symptom(s) are you observing? Has it been inspected and evaluated by a repair shop? If so, what did they say about it?

If the rack and pinion assembly does need to be replaced, I’d expect it to run in the 800-2000 range, depending on exactly what was needed and where it was done.

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**Author:** ![IceQube](https://avatars.discourse-cdn.com/v4/letter/i/dfb087/32.png) [@IceQube](https://boards.straightdope.com/u/IceQube)\
**Post date:** [July 26, 2013, 6:48pm UTC](https://boards.straightdope.com/t/mechanics-broken-rack-and-pinion/664461/7 "2013-07-26T18:48:45Z")

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The car handles fine under all conditions. The mechanic said the rack-and-pinion was affecting the steering. The mechanic aligned the car but we kept noticing a moderate right-ward pull and after further inspection, the mechanic found that the bushings on the rack and pinion had worn out.

Is this dangerous?

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**Author:** ![zoid](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/zoid/32/336_2.png) [@zoid](https://boards.straightdope.com/u/zoid)\
**Post date:** [July 26, 2013, 6:57pm UTC](https://boards.straightdope.com/t/mechanics-broken-rack-and-pinion/664461/8 "2013-07-26T18:57:17Z")

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That’s much better info. Worn bushings are not generally a huge deal. I say not generally because usually you notice it and have them replaced before they fail. It usually takes a little while for it to fail completely but you really don’t want to push it that far, a failed bushing at high speed will not be a good experience.

You’re probably OK limping it to the shop but I wouldn’t be driving it regularly.

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**Author:** ![TriPolar](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/tripolar/32/3008_2.png) [@TriPolar](https://boards.straightdope.com/u/TriPolar)\
**Post date:** [July 26, 2013, 6:58pm UTC](https://boards.straightdope.com/t/mechanics-broken-rack-and-pinion/664461/9 "2013-07-26T18:58:34Z")

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> [@IceQube](#):
>
> The car handles fine under all conditions. The mechanic said the rack-and-pinion was affecting the steering. The mechanic aligned the car but we kept noticing a moderate right-ward pull and after further inspection, the mechanic found that the bushings on the rack and pinion had worn out.
> 
> Is this dangerous?

I assume the bushings that connect the rack to the whatever wheel acuator is there. It’s dangerous because the joint is wearing rapidly and will eventually break.
