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05-21-2024, 09:55 PM
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#1 |
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Senior Moment
 
Join Date: Mar 2002
Location: Pittsburg Ca
Posts: 4,086
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PS not working unless RPM is up
Power Steering not working at idle. Up the RPM and it works. Any Ideas
HELP
__________________
1970 CST LS 1 6 speed Ford 9 inch Detroit Tru Track, Dakota Didgital, Vintage Air, QA1 Coil Overs Front & Rear Lots of FUN 2013 GMC PU, Oldest Son 71 GMC LWB. QA1 Suspension, Angry SB. Youngest Son 2019 GMC Diesil Dually. Youngest Son 2017 Toyota SUV Daughters car 2018 Traverse , Wife’s Ride Pittsburg Ca 94565 |
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05-22-2024, 12:26 AM
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#2 |
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Registered User
Join Date: Oct 2009
Location: Denton, Texas
Posts: 1,703
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Re: PS not working unless RPM is up
Shooting from the hip with a WAG, Wild @ss Guess, but my thought are an air pocket.
Curious to find out what the more knowledgable people on the board say.
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1968 C10 327, 3 speed manual, LWB stock height daily driver. 1968 C20 327, 4 speed manual, LWB stock height custom camper with heavy duty leaf springs rear, 50th anniversary edition. Hoping to press into daily drive status soon. |
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05-22-2024, 07:31 AM
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#3 |
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State of Confusion!
 
Join Date: Jul 2002
Location: Gulfport, MS USA
Posts: 46,749
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Re: PS not working unless RPM is up
That would be my guess also, but not sure really unless it is a pump issue
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Bill 1970 Chevy Custom/10 LWB Fleetside 2010 Toyota Tacoma PreRunner SR5 Double Cab - DD Member of Louisiana Classic Truck Club (LCTC) Bill's Gallery Life isn't tied with a bow, but it's still a gift. Live simply. Love generously. Care deeply. Speak kindly. Leave the rest to God! |
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05-22-2024, 12:19 PM
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#4 |
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Senior Member
Join Date: Nov 2008
Location: Cleveland, OH
Posts: 586
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Re: PS not working unless RPM is up
I've had an issue with the stock pumps turning larger tires - not sure if that is the case or not with you.
I drained and put in some expensive synthetic fluid and it worked.
__________________
1972 Cheyenne Super 20 Custom Camper 12 Valve Cummins/5spd manual 1972 Cheyenne Super Short Bed 557 Med Olive DK olive 1970 K5 Blazer Dark Gold 1966 Coronet 440 35k mile survivor 1991 Suburban 2500 454/4L80E 2wd 1985 Monte Carlo SS 383 Sbc, t-56 magnum 6spd and Ford 9" |
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05-22-2024, 01:15 PM
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#5 |
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Senior Member
Join Date: Nov 2013
Location: East Tennessee
Posts: 2,120
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Re: PS not working unless RPM is up
you may have to monkey with the pressure relief spring
google it....you can increase the pressure pump may be worn as well
__________________
1967 C10 Step side 1968 C10 Step side 1970 Chevrolet K/5 Blazer 1972 Chevrolet K/5 Blazer ............. 
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05-22-2024, 03:33 PM
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#6 |
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Registered User
Join Date: Sep 2011
Location: Ark City, Kansas
Posts: 3,314
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Re: PS not working unless RPM is up
Lucas makes some PS stop leak stuff. I think it has other good things it does.
I'd buy some of that first. It won't take very much. Try 2-3 ounces, see what happens. |
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05-22-2024, 05:37 PM
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#7 |
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Registered User
Join Date: Oct 2004
Location: saskatoon, planet earth
Posts: 685
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Re: PS not working unless RPM is up
Was it working before and this just happened out of the blue?
Have you been doing anything with the system, pump, hoses, connections, steering box? Is there any evidence of leaking fluid? Were you driving and have any type of incident?
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I got a bench seat baby, you don't have to sit over there. |
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05-22-2024, 09:20 PM
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#8 | |
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Senior Moment
Join Date: Mar 2002
Location: Pittsburg Ca
Posts: 4,086
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Re: PS not working unless RPM is up
Quote:
No work done on steering at all Started out of the Blue Only thing we can find is the belt could stand to be a little tighter This is my Sons Truck, I’m going over tomorrow and check it out
__________________
1970 CST LS 1 6 speed Ford 9 inch Detroit Tru Track, Dakota Didgital, Vintage Air, QA1 Coil Overs Front & Rear Lots of FUN 2013 GMC PU, Oldest Son 71 GMC LWB. QA1 Suspension, Angry SB. Youngest Son 2019 GMC Diesil Dually. Youngest Son 2017 Toyota SUV Daughters car 2018 Traverse , Wife’s Ride Pittsburg Ca 94565 |
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05-22-2024, 09:46 PM
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#9 |
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Born Psycho
Join Date: Feb 2001
Location: brentwood,cal,usa
Posts: 4,804
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Re: PS not working unless RPM is up
Steve, my guess would be a bad p-s pump if it happened out of the blue.
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jerry moss 72 cheyenne super K20- tilt,tach,vacuum,speedwarning,buckets,shoulder belts,am/fm,tow hooks,bumper guards,toolbox,aux. fuel tank,posi front and rear,plus other goodies!!! SOLD 69 suburban K20-tilt,tach,vacuum,speedwarning,buckets,shoulder belts,am/fm,4 inch all spring lift,4 speed, 14 bolt full floater, dana 44 HD,warn winch,posi front and rear,tow hooks,plus other goodies. 73/80 chevy/gmc K20 SB400,turbo 400,205,tilt,a-c,gas hog. 77 K/5 cheyenne blazer-daily driver/beater. SON HAS IT NOW BRENTWOOD,CALIFORNIA |
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05-22-2024, 10:38 PM
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#10 | |
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Senior Moment
Join Date: Mar 2002
Location: Pittsburg Ca
Posts: 4,086
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Re: PS not working unless RPM is up
Quote:
__________________
1970 CST LS 1 6 speed Ford 9 inch Detroit Tru Track, Dakota Didgital, Vintage Air, QA1 Coil Overs Front & Rear Lots of FUN 2013 GMC PU, Oldest Son 71 GMC LWB. QA1 Suspension, Angry SB. Youngest Son 2019 GMC Diesil Dually. Youngest Son 2017 Toyota SUV Daughters car 2018 Traverse , Wife’s Ride Pittsburg Ca 94565 |
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