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Author Topic: full left or right steering pump stalls motor  (Read 2465 times)

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Offline 78_starsky

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full left or right steering pump stalls motor
« on: August 03, 2013, 09:37:56 AM »
Anyone every had this happen?  When the car is sitting idling and i turn the wheel full left or right the motor will stall out.  The tach shows about 550 rpm then nothing as it dies/bogs the pump out.

normal driving the pump seems ok but might have some sort of drag.  is it possible to hook up the lines to the steering rack butt backwards? 

cheers

Offline jeremysdad

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Re: full left or right steering pump stalls motor
« Reply #1 on: August 03, 2013, 10:24:22 AM »
Fairly normal. Fully (to lock) creates a big strain on the pump. It will destroy the pump if you hold it there long enough. Might check to make sure your idle's not set too low. 550 is about where it should idle with lights on, in gear (if auto), and a/c on  (if equipped).

Offline 78_starsky

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Re: full left or right steering pump stalls motor
« Reply #2 on: August 03, 2013, 10:28:29 AM »
thanks for that.   i wasn't sure if normal or not, seemed a bit odd to kill the motor that easy.
yes auto no lights on though just running normal.

thanks

Offline 74 PintoWagon

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Re: full left or right steering pump stalls motor
« Reply #3 on: August 03, 2013, 10:29:26 AM »
Should be a bleed off in the pump to relieve pressure when you reach maximum travel and you can hear it, without it you can blow the pressure hose.
Art
65 Falcon 2DR 200 IL6 with C4.

Offline 78_starsky

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Re: full left or right steering pump stalls motor
« Reply #4 on: August 03, 2013, 10:33:36 AM »
hey!!!!!   now this happened.  i did have to get the hose replaced as it blew a hole in it!!!!!

can you go further into the bleeding?  i need to know how/where to do this.  never heard of it before can you explain more?

thanks.  or is the pump pooched? and needs to be replaced?

Offline 74 PintoWagon

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Re: full left or right steering pump stalls motor
« Reply #5 on: August 03, 2013, 10:41:03 AM »
It's an internal pop off valve inside the pump, when you reach full travel the pump keeps building pressure until something gives, thus the reason for a pop off valve to release pressure, I'd say you need another pump.
Art
65 Falcon 2DR 200 IL6 with C4.

Offline 78_starsky

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Re: full left or right steering pump stalls motor
« Reply #6 on: August 03, 2013, 11:01:27 AM »
thanks!    guess i need to replace the pump....    :(

never fails.....  fix one thing to break another......    LOL

cheers

Offline 74 PintoWagon

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Re: full left or right steering pump stalls motor
« Reply #7 on: August 03, 2013, 11:25:15 AM »
Sounds like everything is normal, LOL..
Art
65 Falcon 2DR 200 IL6 with C4.

Offline Fred Morgan

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Re: full left or right steering pump stalls motor
« Reply #8 on: August 03, 2013, 05:53:48 PM »
I just O/H one of these 2 hours ago.   Fred 
Fred Morgan- Missing from us...
January 20th 1951-January 6th 2014

Beloved PCCA Parts Supplier and Friend to many.
Post your well wishes,
http://www.fordpinto.com/in-memory-of-our-fallen-pinto-heros/fred-morgan-23434/

Offline 78_starsky

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Re: full left or right steering pump stalls motor
« Reply #9 on: August 04, 2013, 11:51:59 PM »
Hi Fred, thanks for the diagram.  I had already got the new one before i seen your post.  are they hard to rebuild?

Thanks for the info pinto wagon.  All fixed up now and running smooth....  what a pain in the BuTT to change.....   all good to go now,

thanks guys!!!

casey

Offline 74 PintoWagon

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Re: full left or right steering pump stalls motor
« Reply #10 on: August 05, 2013, 08:42:14 AM »
Nahh they're easy to re build, glad to hear ya got it fixed. 8)
Art
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Offline amc49

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Re: full left or right steering pump stalls motor
« Reply #11 on: August 23, 2013, 05:45:24 AM »
Biggest thing with rebuilt or new or even old pump is to make sure it does not run dry even for seconds when first filling it up. I have seen them score pump body to make noise forever by simply being slow to get more oil in there. As little as five seconds dry can score the pump if the parts scrape off oil to be dry. I always stand over the reservoir and have someone else crank the motor, that way I lose no time chasing the reservoir level, a good working system can void all oil in it in like ten seconds or less.

If old pump not making noise I wouldn't change it, the hose could've been ready to blow anyway. You NEVER hold power steering on the limit for more than a second, and risking things doing that, the pump ramps up to full output and the bypass (your 'bleed off') bumps open trying to save pump and lines. Sometimes it can't do it............ ..the systems are not supposed to be abused like that.