Steering problem diagnosis? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Blue68 · 05-16-2002, 03:38 PM

Here's one for you steering gurus. My power steering is posessed. When I turn the wheel real hard and quick to the left, it will keep right on turning until it hits the stop. Of course, I'm doing this with it sitting still. Is it the steering box or the pump. Seems to me it should be in the box, right?

Help please.

------------------
'68 C-10 LWB, '98 Z-71 350 w/accessories (Serpentine), Edelbrock Performer, Edelbrock 1405 (600cfm) carb, GM HEI, CompCam Extreme 4x4 roller cam, Thorley Headers, Carter Electric Fuel Pump, Vintage Air, 700r4, 3.73, disc brakes and power steering upgrades.

Way too much money and time..But it's a hobby.

*Fast68Chevy* · 05-16-2002, 05:06 PM

uhmm well we kow the pump works at least, are the hydraulic lines jimmy rigged ? or is is one still original style with compressed fittings both ends and other hose with hose clamps ? maybe are connected backwards ?

------------------
Randy- Lincoln, IL
randy@ccaonline.com 2177353230
*many GM parts bought, traded, or sold -am parting out: '81 Cutlass Supreme and 84 SE Firebird T5 3.73

current fleet: -71 C-10 350/CH465/3.07- assembling currently
-90 Cavalier/2.2/sky blue, driver #2
-84 Z28 5.0L/700R4/3.73 daily driver #1
-'90 Corsica 3.1L and '82 purple Trans Am- storing *Paint is overrated* © RSS Enterprises 2000

Scrub · 05-16-2002, 08:06 PM

Hmmm.
Have you replaced it or done anything to it reciently?

Sounds like it has either got air bubbles,
Some dirt in a valve, or just worn out.

I would sure replace it.

------------------
Scrub
70 GMC 1,000,000 + miles
72 K-20 project, 456 Dana60 front, Corp14 rear w/locker, 265R19.5 tires 20-ply. Warn 12k winches both ends, Cross-over steering with raised tie-rod, Powerbox steering, 4500 watt 120-AC power, Air, Hydraulic aux power, 4 inch lift, 5000 lb air-bags both ends.

slam33 · 05-16-2002, 10:06 PM

Thats a box problem. The pump will not do that.

------------------
71 basic C-10 350. The only option is the rust.No nothing on it, but thats all about to change. <A HREF="http://www.geocities.com/stevemau/slam33page.html?1004806705410

" TARGET=_blank>http://www.geocities.com/stevemau/slam33page.html?1004806705410

</A>

Longhorn Man · 05-16-2002, 10:15 PM

but, how would the box do it?
Is it the proper power assist pump? (mounded way down low on dvr side...bracket going back to the motor mount)
Kinda sounds to me like the pressure relief valve in the pump is either not working properly, or the wrong setting. (not sure if there would be more than one setting on it though)

------------------
'69 G.M.C. 350/350. Trying to clean up the left over damage from the Dope-Smokin-Old-Man
I've been dubbed the Longhorn Freak/Fanatic/Expert, I just hope I can live up to it.
FINALLY got the HORNIAC...a '70 one ton Longhorn with a Pontiac 350/350 and lots of 'personality'. Check out The Longhorn Webite.
E-mail longhornmail@yahoo.com
My name is Andy...not Randy...I'm in Ohio...Not Illinois...close enough?
Columbus Ohio

Baradium · 05-16-2002, 10:21 PM

You do any suspension modifications recently?

slam33 · 05-16-2002, 10:35 PM

The pump just pumps, it provides the pressure. The box sounds like the valves are blown out, it doesn't know when to stop turning. I know it sounds weird but I'm getting tired here.

------------------
71 basic C-10 350. The only option is the rust.No nothing on it, but thats all about to change. <A HREF="http://www.geocities.com/stevemau/slam33page.html?1004806705410

" TARGET=_blank>http://www.geocities.com/stevemau/slam33page.html?1004806705410

</A>

Longhorn Man · 05-16-2002, 10:51 PM

I thoguht the valves were in the pump. My fault.

------------------
'69 G.M.C. 350/350. Trying to clean up the left over damage from the Dope-Smokin-Old-Man
I've been dubbed the Longhorn Freak/Fanatic/Expert, I just hope I can live up to it.
FINALLY got the HORNIAC...a '70 one ton Longhorn with a Pontiac 350/350 and lots of 'personality'. Check out The Longhorn Webite.
E-mail longhornmail@yahoo.com
My name is Andy...not Randy...I'm in Ohio...Not Illinois...close enough?
Columbus Ohio

*Zkast* · 05-16-2002, 10:59 PM

the valve spool (in the gear) could be binding when you begin to open the valve but turning the wheel it cannot return back to a resting/neutral position which causes it to keep applying fluid pressure.

I'm curious though, does this happen on both left and right? My first thought was, reversed hoses at the gear. But that mistake will usually cause a rapid *thrashing* back and forth of the wheel. Wheels will go lock to lock until you turn the engine off.

Now that I read through your post again it definatly sounds like a binding valve spool assembly in the steering gear.

Never the less... end result? Replace the steering gear

------------------
Pictures and more...
Email me
'71 LWB
350/350T, PS/PB
Special options? Yes, RUST... Need some?

Garrett
Olathe, Kansas

Blue68 · 05-17-2002, 10:01 AM

Thanks guys. Not really enthusiastic about the swap (mo money), but it's been working up to a swap for awhile now. Just wanted to make sure to swap the right part. And it does do it both ways, just that to the right is the strongest.

------------------
'68 C-10 LWB, '98 Z-71 350 w/accessories (Serpentine), Edelbrock Performer, Edelbrock 1405 (600cfm) carb, GM HEI, CompCam Extreme 4x4 roller cam, Thorley Headers, Carter Electric Fuel Pump, Vintage Air, 700r4, 3.73, disc brakes and power steering upgrades.

Way too much money and time..But it's a hobby.

05-16-2002, 08:06 PM	#3
Scrub Collector of rusty Items Join Date: Dec 2001 Location: Sisters,Oregon USA Posts: 731	Hmmm. Have you replaced it or done anything to it reciently? Sounds like it has either got air bubbles, Some dirt in a valve, or just worn out. I would sure replace it. ------------------ Scrub 70 GMC 1,000,000 + miles 72 K-20 project, 456 Dana60 front, Corp14 rear w/locker, 265R19.5 tires 20-ply. Warn 12k winches both ends, Cross-over steering with raised tie-rod, Powerbox steering, 4500 watt 120-AC power, Air, Hydraulic aux power, 4 inch lift, 5000 lb air-bags both ends. __________________ Scrub Sisters, Oregon - Home of the Sisters Rodeo. 70 GMC 1,000,000 + miles 72 K-20 project, 456 Dana60 front, Corp14 rear w/locker, 265R19.5 tires 20-ply. Warn 12k winches both ends, Cross-over steering with raised tie-rod, Powerbox steering, 4500 watt 120-AC power, Air, Hydraulic aux power, 4 inch lift, 5000 lb air-bags both ends.

05-16-2002, 10:06 PM	#4
slam33 Registered User Join Date: Aug 2001 Location: Long Beach, Ca Posts: 1,432	Thats a box problem. The pump will not do that. ------------------ 71 basic C-10 350. The only option is the rust.No nothing on it, but thats all about to change. <A HREF="http://www.geocities.com/stevemau/slam33page.html?1004806705410 " TARGET=_blank>http://www.geocities.com/stevemau/slam33page.html?1004806705410 </A> __________________ 71 LWB 350/350still working on it but it's going tp be sweet. www.geocities.com/stevemau/slam33page.html " TARGET=_blank>http://www.geocities.com/stevemau/slam33page.html?1004806705410 </A>

05-16-2002, 10:35 PM	#7
slam33 Registered User Join Date: Aug 2001 Location: Long Beach, Ca Posts: 1,432	The pump just pumps, it provides the pressure. The box sounds like the valves are blown out, it doesn't know when to stop turning. I know it sounds weird but I'm getting tired here. ------------------ 71 basic C-10 350. The only option is the rust.No nothing on it, but thats all about to change. <A HREF="http://www.geocities.com/stevemau/slam33page.html?1004806705410 " TARGET=_blank>http://www.geocities.com/stevemau/slam33page.html?1004806705410 </A> __________________ 71 LWB 350/350still working on it but it's going tp be sweet. www.geocities.com/stevemau/slam33page.html " TARGET=_blank>http://www.geocities.com/stevemau/slam33page.html?1004806705410 </A>

05-17-2002, 10:01 AM	#10
Blue68 Registered User Join Date: Apr 2000 Location: Frisco, Tx, USA Posts: 606	Thanks guys. Not really enthusiastic about the swap (mo money), but it's been working up to a swap for awhile now. Just wanted to make sure to swap the right part. And it does do it both ways, just that to the right is the strongest. ------------------ '68 C-10 LWB, '98 Z-71 350 w/accessories (Serpentine), Edelbrock Performer, Edelbrock 1405 (600cfm) carb, GM HEI, CompCam Extreme 4x4 roller cam, Thorley Headers, Carter Electric Fuel Pump, Vintage Air, 700r4, 3.73, disc brakes and power steering upgrades. Way too much money and time..But it's a hobby. __________________ http://home.comcast.net/~r.landrum/w...tos.html-.html '68 C-10 LWB, '98 Z-71 350 w/accessories (Serpentine), Edelbrock Performer, Edelbrock 1405 (600cfm) carb, GM HEI, CompCam Extreme 4x4 roller cam, Thorley Headers, Carter Electric Fuel Pump, Vintage Air, 700r4, 3.73, disc brakes and power steering upgrades.

05-16-2002, 03:38 PM	#1
Blue68 Registered User Join Date: Apr 2000 Location: Frisco, Tx, USA Posts: 606	Steering problem diagnosis? Here's one for you steering gurus. My power steering is posessed. When I turn the wheel real hard and quick to the left, it will keep right on turning until it hits the stop. Of course, I'm doing this with it sitting still. Is it the steering box or the pump. Seems to me it should be in the box, right? Help please. ------------------ '68 C-10 LWB, '98 Z-71 350 w/accessories (Serpentine), Edelbrock Performer, Edelbrock 1405 (600cfm) carb, GM HEI, CompCam Extreme 4x4 roller cam, Thorley Headers, Carter Electric Fuel Pump, Vintage Air, 700r4, 3.73, disc brakes and power steering upgrades. Way too much money and time..But it's a hobby. __________________ http://home.comcast.net/~r.landrum/w...tos.html-.html '68 C-10 LWB, '98 Z-71 350 w/accessories (Serpentine), Edelbrock Performer, Edelbrock 1405 (600cfm) carb, GM HEI, CompCam Extreme 4x4 roller cam, Thorley Headers, Carter Electric Fuel Pump, Vintage Air, 700r4, 3.73, disc brakes and power steering upgrades.

05-16-2002, 05:06 PM	#2
Fast68Chevy Account Suspended Join Date: May 2000 Location: IL Posts: 0	uhmm well we kow the pump works at least, are the hydraulic lines jimmy rigged ? or is is one still original style with compressed fittings both ends and other hose with hose clamps ? maybe are connected backwards ? ------------------ Randy- Lincoln, IL randy@ccaonline.com 2177353230 many GM parts bought, traded, or sold -am parting out: '81 Cutlass Supreme and 84 SE Firebird T5 3.73 current fleet: -71 C-10 350/CH465/3.07- assembling currently -90 Cavalier/2.2/sky blue, driver #2 -84 Z28 5.0L/700R4/3.73 daily driver #1 -'90 Corsica 3.1L and '82 purple Trans Am- storing Paint is overrated* © RSS Enterprises 2000

05-16-2002, 10:15 PM	#5
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	but, how would the box do it? Is it the proper power assist pump? (mounded way down low on dvr side...bracket going back to the motor mount) Kinda sounds to me like the pressure relief valve in the pump is either not working properly, or the wrong setting. (not sure if there would be more than one setting on it though) ------------------ '69 G.M.C. 350/350. Trying to clean up the left over damage from the Dope-Smokin-Old-Man I've been dubbed the Longhorn Freak/Fanatic/Expert, I just hope I can live up to it. FINALLY got the HORNIAC...a '70 one ton Longhorn with a Pontiac 350/350 and lots of 'personality'. Check out The Longhorn Webite. E-mail longhornmail@yahoo.com My name is Andy...not Randy...I'm in Ohio...Not Illinois...close enough? Columbus Ohio

05-16-2002, 10:21 PM	#6
Baradium Binder Rep Join Date: Jan 2001 Location: Salcha, AK Posts: 1,506	You do any suspension modifications recently?

05-16-2002, 10:51 PM	#8
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	I thoguht the valves were in the pump. My fault. ------------------ '69 G.M.C. 350/350. Trying to clean up the left over damage from the Dope-Smokin-Old-Man I've been dubbed the Longhorn Freak/Fanatic/Expert, I just hope I can live up to it. FINALLY got the HORNIAC...a '70 one ton Longhorn with a Pontiac 350/350 and lots of 'personality'. Check out The Longhorn Webite. E-mail longhornmail@yahoo.com My name is Andy...not Randy...I'm in Ohio...Not Illinois...close enough? Columbus Ohio

05-16-2002, 10:59 PM	#9
Zkast Account Suspended Join Date: May 2002 Location: Olathe, Kansas Posts: 929	the valve spool (in the gear) could be binding when you begin to open the valve but turning the wheel it cannot return back to a resting/neutral position which causes it to keep applying fluid pressure. I'm curious though, does this happen on both left and right? My first thought was, reversed hoses at the gear. But that mistake will usually cause a rapid thrashing back and forth of the wheel. Wheels will go lock to lock until you turn the engine off. Now that I read through your post again it definatly sounds like a binding valve spool assembly in the steering gear. Never the less... end result? Replace the steering gear ------------------ Pictures and more... Email me '71 LWB 350/350T, PS/PB Special options? Yes, RUST... Need some? Garrett Olathe, Kansas



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