Power Steering and Brake loss

Power Steering and Brake loss

Postby Mickmon [OP] » October 3rd 2020, 6:42pm

Hi
i have a 1997 Chevy Astro AWD Tiara. I was just out driving in the UK and did a U-turn on full lock.
Suddenly as completing turn loss my power steering and brakes.
Have checked and there is no fluid loss or leak in the the engine bay.

Has this happened to anyone before, and what do i need to do to fix the issue.
Any help or advice would be appreciated.

cheers
Mick
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Re: Power Steering and Brake loss

Postby M_a_t_t » October 3rd 2020, 7:47pm

Power steering pump. It runs the brake booster aswell on these vans.

Also you posted in the wrong category, so expect it to be moved elsewhere.
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Re: Power Steering and Brake loss

Postby Big_kid » October 3rd 2020, 7:47pm

Check the input shaft on the power steering pump, it may have sheared yet remained in place. I've not experienced this myself, but I have read of it happening to others.

moved to steering
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Re: Power Steering and Brake loss

Postby Mickmon [OP] » October 3rd 2020, 10:09pm

Big_kid wrote:Check the input shaft on the power steering pump, it may have sheared yet remained in place. I've not experienced this myself, but I have read of it happening to others.

moved to steering



Thanks for your help.
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Re: Power Steering and Brake loss

Postby MechBob » October 3rd 2020, 10:38pm

Remove your belt,grab ahold of the pully/shaft on the P/S pump,I bet you can pull it out,away from the engine.If you can,shaft is broken.If it only moves in and out a tiny bit,might be something else,but I doubt It.I have replaced many shafts and pumps on GM products for what you have described.
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Re: Power Steering and Brake loss

Postby AstroWill » October 4th 2020, 1:27am

Big_kid wrote:Check the input shaft on the power steering pump, it may have sheared yet remained in place. I've not experienced this myself, but I have read of it happening to others.


Quite common, most often happens at full lock and on the brakes, but they are just too weak.
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Re: Power Steering and Brake loss

Postby Mickmon [OP] » October 10th 2020, 12:47pm

MechBob wrote:Remove your belt,grab ahold of the pully/shaft on the P/S pump,I bet you can pull it out,away from the engine.If you can,shaft is broken.If it only moves in and out a tiny bit,might be something else,but I doubt It.I have replaced many shafts and pumps on GM products for what you have described.



Bob,
thanks have tried this without removing belt and pulley pulled forward by 1"inch.

Is this a hard job to do to change the pump, as looking at it i think i could do but not sure the tools i would need.
Also as being in the UK i would like to order parts first. Is there a easy way to know what model pump i need. As was on Rockauto and there seems as there are a few variations.

All the Best
Mick
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Re: Power Steering and Brake loss

Postby AstroWill » October 12th 2020, 2:13pm

It's a tight space, but nothing really hard about it.

Get one with a reservoir, one less thing to mess with.
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Re: Power Steering and Brake loss

Postby Mickmon [OP] » October 16th 2020, 11:20pm

AstroWill wrote:It's a tight space, but nothing really hard about it.

Get one with a reservoir, one less thing to mess with.


Will,
thanks for advice.
When you say get one with reservoir how you mean less mess?
Also as my pulley is still attached to part of power steering pump shaft how best to separate.
Final when connecting pulley back to new pump do i need an special tools or seals.

cheers
Mick
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Re: Power Steering and Brake loss

Postby Leeann_93 » October 16th 2020, 11:22pm

Not less mess, one less thing to mess with.

If the reservoir’s attached, you don’t need to remove it from the old one and install it on the new.
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Re: Power Steering and Brake loss

Postby MechBob » October 16th 2020, 11:58pm

Parts stores here loan out the tools,but over there you may have to take the pumps to a repair shop to have them swapped,but some years is easier to install pump then install the pulley.You may want to invest in a kit----
https://www.ebay.co.uk/itm/Power-Steeri ... %3A2334524
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Re: Power Steering and Brake loss

Postby Mmusicman » October 17th 2020, 12:08am

My AWD, I pulled the accy bracket.. then remove/install the pump to it, then back to the engine.
If you undo the idler arms.. it gives you some wiggle room.
Be aware there is a bracket on the back of the pump (accessible though the fender.. I didn't reuse it)
I change the pulley on the ground using the kit...

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Re: Power Steering and Brake loss

Postby Mickmon [OP] » October 17th 2020, 2:22pm

Mmusicman wrote:My AWD, I pulled the accy bracket.. then remove/install the pump to it, then back to the engine.
If you undo the idler arms.. it gives you some wiggle room.
Be aware there is a bracket on the back of the pump (accessible though the fender.. I didn't reuse it)
I change the pulley on the ground using the kit...

Image


Thanks for advice.
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Re: Power Steering and Brake loss

Postby Mickmon [OP] » October 17th 2020, 2:26pm

MechBob wrote:Parts stores here loan out the tools,but over there you may have to take the pumps to a repair shop to have them swapped,but some years is easier to install pump then install the pulley.You may want to invest in a kit----
https://www.ebay.co.uk/itm/Power-Steeri ... %3A2334524



Bob,
thanks for the help and the link.

Have the pump released from brackets just having trouble trying to wiggle out.
I haven't removed engine fan, so Im thinking Im making life hard for myself. Do you say the only way to sort is by getting fan out of the way.

Cheers
Mick
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Re: Power Steering and Brake loss

Postby MechBob » October 17th 2020, 2:33pm

Yes remove fan
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Re: Power Steering and Brake loss

Postby Mmusicman » October 17th 2020, 3:25pm

Is the fan the only obstacle?
Mickmon wrote:Have the pump released from brackets just having trouble trying to wiggle out.

This is why I remove the bracket (with the pump still attached).. then easily lift the whole assembly out.
(only 4 easy access bolts hold the A/C compressor which you suspend up and out of the way with bungees)

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I've never tried removing it the other way.. (especially with AWD)
I've replaced mine twice (interesting story)
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Re: Power Steering and Brake loss

Postby Mickmon [OP] » October 17th 2020, 10:23pm

Mmusicman wrote:Is the fan the only obstacle?
Mickmon wrote:Have the pump released from brackets just having trouble trying to wiggle out.

This is why I remove the bracket (with the pump still attached).. then easily lift the whole assembly out.
(only 4 easy access bolts hold the A/C compressor which you suspend up and out of the way with bungees)

Image
I've never tried removing it the other way.. (especially with AWD)
I've replaced mine twice (interesting story)



Thanks very much for the help.
In the UK there is limited help and advice for Chevy Astro Vans
Take care and all the best.
Mick.
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Re: Power Steering and Brake loss

Postby Mickmon [OP] » October 17th 2020, 10:24pm

MechBob wrote:Yes remove fan


Cheers.
thanks.
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