C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
Sponsored by:
Sponsored by:

Power Steering Control Valve Rebuild Problems

Thread Tools
 
Search this Thread
 
Old Apr 9, 2016 | 11:02 AM
  #1  
CodyPrince's Avatar
CodyPrince
Thread Starter
Intermediate
 
Joined: Sep 2014
Posts: 43
Likes: 0
From: Raymore Missouri
Default Power Steering Control Valve Rebuild Problems

I rebuilt my PSCV following Hitch's instructions here combined with willcox's instructions here. I bought the full PSCV Rebuilt kit from Willcox here and thought the rebuild and install went perfect. no problems at all.

I just drove it out of the garage for the first time since and it seems as if something is wrong.

When doing the adjustment in the last step, I got it to where my steering wheel was sitting right in the middle and not moving from side to side. Steering wheel was centered in position and looking good.

Now, when driving down the road, the steering wheel it not centered and about an 1/8 of a turn to the right. It also appears as if I only have power steering when turning left altho now that I think about it, my drive around the block was clockwise. when driving straight, it felt as if I had less resistance moving wheel left than I did right.

I felt as if I primed the pump right by removing belt and turning pump backwards. Fluid level seems to be good.

Any advice?

Thanks, Cody

Update: The only thing I can think of that I could have done wrong was prime the pump. I thought I knew which way was backwards. If facing the car from the front, the fan spins clockwise, so I figured all the others would be spinning clockwise as well. After removing belt, I primed it by turning it counter clockwise.

Last edited by CodyPrince; Apr 9, 2016 at 11:24 AM.
Reply
Old Apr 9, 2016 | 11:30 AM
  #2  
resdoggie's Avatar
resdoggie
Had a 1976 L-82, 4-sp
Supporting Lifetime
10 Year Member
Veteran: Navy
 
Joined: Mar 2011
Posts: 5,338
Likes: 1,213
From: Some days your the dog and some days your the hydrant.
Royal Canadian Navy
Default

Did you recheck the PS fluid level? When I did mine, I started the car for a few second and primed the pump that way. I repeated this process a few times adding fluid until the level came up to "full cold". Maybe recheck your steering centering with wheels off the ground.
Reply
Old Apr 9, 2016 | 11:43 AM
  #3  
Peterbuilt's Avatar
Peterbuilt
Le Mans Master
15 Year Member
 
Joined: Aug 2006
Posts: 7,427
Likes: 1,560
From: mount holly NC
2025 c3 ('74-'82) of the Year Finalist - Unmodified
2019 C3 of Year Finalist (appearance mods)
Default

Your steering wheel is off center because when you changed the pscv the gap changed.
An alignment shop can correct the toe so that the steering wheel is back on center.

Reply
Old Apr 9, 2016 | 05:22 PM
  #4  
CodyPrince's Avatar
CodyPrince
Thread Starter
Intermediate
 
Joined: Sep 2014
Posts: 43
Likes: 0
From: Raymore Missouri
Default

Originally Posted by resdoggie
Did you recheck the PS fluid level? When I did mine, I started the car for a few second and primed the pump that way. I repeated this process a few times adding fluid until the level came up to "full cold". Maybe recheck your steering centering with wheels off the ground.
I lost a lot of fluid when I had it disconnected. While priming I added a lot. right now it is about an 1/8" low.

Lack of fluid isn't the issue I don't believe.

Thanks though
Reply
Old Apr 9, 2016 | 05:23 PM
  #5  
CodyPrince's Avatar
CodyPrince
Thread Starter
Intermediate
 
Joined: Sep 2014
Posts: 43
Likes: 0
From: Raymore Missouri
Default

Originally Posted by Peterbuilt
Your steering wheel is off center because when you changed the pscv the gap changed.
An alignment shop can correct the toe so that the steering wheel is back on center.

I read a lot and never heard that I would need an alignment shop later. weird.

Last edited by CodyPrince; Apr 9, 2016 at 06:42 PM.
Reply
Old Apr 9, 2016 | 10:52 PM
  #6  
Willcox Corvette's Avatar
0Willcox Corvette
Former Vendor
 
Joined: Aug 2006
Posts: 76,656
Likes: 1,853
From: Jeffersonville Indiana 812-288-7103
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15
Default

Originally Posted by CodyPrince
I read a lot and never heard that I would need an alignment shop later. weird.
You shouldn't as long as you got the valve back on in the same position. To purge the air from the system turn the steering wheel all the way to the left and hold it.. then all the way to right and hold it.. that should push any air from the system.

I think after that I would double check the balance of the valve.

IMHO,

Willcox.
Reply
Old Apr 10, 2016 | 11:08 AM
  #7  
Peterbuilt's Avatar
Peterbuilt
Le Mans Master
15 Year Member
 
Joined: Aug 2006
Posts: 7,427
Likes: 1,560
From: mount holly NC
2025 c3 ('74-'82) of the Year Finalist - Unmodified
2019 C3 of Year Finalist (appearance mods)
Default

'Balancing the control valve' and 'centering the steering wheel' are two different procedures.
You successfully balanced the control valve since you state that the car goes straight down the road without pulling left or right.

Your car does NOT need an alignment since changing the PSCV does NOT affect the alignment.
Bad choice of words in my first post, I should have said an alignment shop can 'Adjust the tie rod tubes to bring the steering wheel back on center'.

You said that the steering wheel is off center to the right so here is one way to correct that problem.

If your steering wheel needs to be rotated counterclockwise to bring it back to center, the left tie rod assembly will need to be lengthened and the right one shortened.
Turn both tubes an equal number of turns in the same direction.
Reply
Old Apr 10, 2016 | 12:32 PM
  #8  
Willcox Corvette's Avatar
0Willcox Corvette
Former Vendor
 
Joined: Aug 2006
Posts: 76,656
Likes: 1,853
From: Jeffersonville Indiana 812-288-7103
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15
Default

Originally Posted by Peterbuilt
'Balancing the control valve' and 'centering the steering wheel' are two different procedures.
You successfully balanced the control valve since you state that the car goes straight down the road without pulling left or right.

Your car does NOT need an alignment since changing the PSCV does NOT affect the alignment.
Bad choice of words in my first post, I should have said an alignment shop can 'Adjust the tie rod tubes to bring the steering wheel back on center'.

You said that the steering wheel is off center to the right so here is one way to correct that problem.

If your steering wheel needs to be rotated counterclockwise to bring it back to center, the left tie rod assembly will need to be lengthened and the right one shortened.
Turn both tubes an equal number of turns in the same direction.


The reason I suggested a re-balance was "when driving straight, it felt as if I had less resistance moving wheel left than I did right." That's usually a valve this either has an issue inside or one that is not balanced correctly.
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

10 Ugly Corvettes That We Still Kinda Love

 Joe Kucinski
story-1

Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

 Brett Foote
story-2

10 Things Every Corvette Owner Needs (2026 Edition)

 Michael S. Palmer
story-3

8 Most "Only Corvette Owners Understand" Quirks and Problems

 Pouria Savadkouei
story-4

10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

 Joe Kucinski
story-5

How Much Horsepower Every Corvette Engine "LOST" in 1972

 Joe Kucinski
story-6

Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

 Michael S. Palmer
story-7

Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

 Joe Kucinski
story-8

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

 Joe Kucinski
story-9

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo
Old Apr 11, 2016 | 05:49 PM
  #9  
CodyPrince's Avatar
CodyPrince
Thread Starter
Intermediate
 
Joined: Sep 2014
Posts: 43
Likes: 0
From: Raymore Missouri
Default

Ok everyone, thanks for all the replies. In my efforts to search the web (this forum) for other use full information on this issue, I found a different method of balancing the valve other than Hitch's method. Willcox's method had the piston rod disconnected from the frame.

I did it this way and found that it was the same as before. This way made sure I didn't have any misaligned or directed parts. I also cranked the wheels both ways and held it there to bleed out any air.

Still no difference. What the heck is going on?

Any more advice?

Thanks, Cody
Reply
Old Apr 12, 2016 | 09:16 PM
  #10  
spedaleden's Avatar
spedaleden
Safety Car
20 Year Member
 
Joined: Nov 2004
Posts: 4,359
Likes: 57
From: Mundelein Illinois
Default

I feel your pain, I know its not cheap but the Borgeson steering box is the way to go. I spent more money trying to keep the factory steering system from leaking (hoses valve and cylinder) Borgeson is by far cheaper in the long run. I live in Chicago and was on power tour when my valve took a dump in Tenn. I just put a new valve on the car before the trip because the one on the car was 2 years old and leaking, no parts stores had valve fluid dripping like mad and had to run a bypass hose not to fry pump and drove home with manual steering and oil all over rear bumper. That was 3 years ago and no problems since and no dripping fluid on driveway. Only difference is telescopic travel is less with Borgeson because you have to shorten steering shaft by pressing it inward. Install is not bad.

Just my 2 cents

Last edited by spedaleden; Apr 12, 2016 at 09:21 PM.
Reply
Old Apr 12, 2016 | 10:59 PM
  #11  
Peterbuilt's Avatar
Peterbuilt
Le Mans Master
15 Year Member
 
Joined: Aug 2006
Posts: 7,427
Likes: 1,560
From: mount holly NC
2025 c3 ('74-'82) of the Year Finalist - Unmodified
2019 C3 of Year Finalist (appearance mods)
Default

Hi again, CodyPrince,
Give yourself an 'A' for effort. Since this was your first attempt at rebuilding the PSCV you did very well!
Someone like Willcox who rebuilds many of these could spot a worn part or an 'O' ring or seal that was not made properly.
One can read or watch youtube but having an expert guide you through a few rebuilds helps.
It was a good learning experience but it might just be time to order a rebuilt unit and get your Corvette back on the road.
Pete.
Reply
Old Apr 24, 2016 | 11:21 PM
  #12  
CodyPrince's Avatar
CodyPrince
Thread Starter
Intermediate
 
Joined: Sep 2014
Posts: 43
Likes: 0
From: Raymore Missouri
Default

Originally Posted by Peterbuilt
Hi again, CodyPrince,
Give yourself an 'A' for effort. Since this was your first attempt at rebuilding the PSCV you did very well!
Someone like Willcox who rebuilds many of these could spot a worn part or an 'O' ring or seal that was not made properly.
One can read or watch youtube but having an expert guide you through a few rebuilds helps.
It was a good learning experience but it might just be time to order a rebuilt unit and get your Corvette back on the road.
Pete.
Well, I tore it apart again tonight just take one last look at some of those parts. i wanted to take some pics and post them to see what the group said about them. I didn't think they fit quite right, but it being Willcox and all, I figured it was all good.

I guess live and learn. Going to pick up rebuilt PSCV tomorrow and get this puppy on the road again. Its been too long and the weather is looking good.

Thanks everyone, Cody
Attached Images     

Last edited by CodyPrince; Apr 26, 2016 at 06:43 PM.
Reply

Get notified of new replies

To Power Steering Control Valve Rebuild Problems





All times are GMT -4. The time now is 10:45 PM.

story-0
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-1
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-2
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-3
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-4
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-5
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-6
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-7
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-8
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-9
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE