Variable Assist Power Steering Issue - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


Buick When starting new posts, please specify YEAR, MAKE, MODEL, ENGINE type, and whatever modifications you have made.

Reply
 
 
 
Thread Tools Search this Thread
Old 11-09-2012, 02:47 PM   #1
Senior Member
True Car Nut
Thread Starter
 
rjolly87's Avatar
 
Join Date: Jun 2003
Location: Las Cruces, NM
Posts: 6,857
Thanked 298 Times in 246 Posts
rjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant future
Default Variable Assist Power Steering Issue

A brief explaination:

My car came equipped with variable assist power steering, much like the SSE'* and SSI'* of the era. What this means is that the power steering will assist on one of 4 levels, ranging from 'Gramma can 1-finger it in the parking lot' to 'you really have to mean it if you want to turn on the highway'.

I have never had a problem with the system until 2 days ago, when I noticed the car was all over the place, and I felt like I was doing it. Long story short, the car is stuck in 'Gramma can 1-finger it in the parking lot' mode, no matter what speed I am going. Does anyone have any quick information on how the system works, or where I should start? I plan to pull out the FSM'* tonight to study up. Nothing else on the vehicle is affected that I have noticed so far.
rjolly87 is offline   Reply With Quote
Old 11-11-2012, 03:56 PM   #2
certified crazy person
Certified GM nut
 
eltatertoto's Avatar
 
Join Date: Sep 2010
Location: hobart indiana (1 hr from chicago)
Posts: 1,871
Thanked 64 Times in 52 Posts
eltatertoto is a jewel in the rougheltatertoto is a jewel in the rougheltatertoto is a jewel in the rougheltatertoto is a jewel in the rough
Default

looks like you are going to have to take it to someone with a tech 2 sadly. worst case is you have to replace the whole rack.

Variable-Assist Power Steering
eltatertoto is offline   Reply With Quote
Old 11-11-2012, 11:01 PM   #3
Senior Member
True Car Nut
Thread Starter
 
rjolly87's Avatar
 
Join Date: Jun 2003
Location: Las Cruces, NM
Posts: 6,857
Thanked 298 Times in 246 Posts
rjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant future
Default

Not quite. According to the article you posted, Magnasteer didn't start up until 1996. I am still stuck in 1993.

I did some reading. It turns out there is a solenoid that boosts the output from the power steering pump to the rack. This solenoid is controlled by the MultiFunction chime module (yes, the door dinger, lol), that gets a speed signal from the PCM. 17-20mph is the magic number. Below that, it energizes the solenoid, and makes for the nice easy steering that makes life in the parking lot easier.

The Electrical Systems FSM actually has 9 pages specifically addressing this system alone, and gives very detailed explanations and troubleshooting information. FSM FTW!!!

On a related and completely annoying note, it was working fine today. Go figure...
rjolly87 is offline   Reply With Quote
Old 11-12-2012, 10:49 PM   #4
certified crazy person
Certified GM nut
 
eltatertoto's Avatar
 
Join Date: Sep 2010
Location: hobart indiana (1 hr from chicago)
Posts: 1,871
Thanked 64 Times in 52 Posts
eltatertoto is a jewel in the rougheltatertoto is a jewel in the rougheltatertoto is a jewel in the rougheltatertoto is a jewel in the rough
Default

for some reason i thought you had a 96. wish my car was that "easy". i would love to make the steering tighten up at about 35-40 instead of the 70-75 as that article pointed out. im not about to pay a dealer to play with it though.
eltatertoto is offline   Reply With Quote
Old 11-21-2012, 01:40 AM   #5
Junior Member
Posts like a Ricer Type-R
 
Join Date: Mar 2011
Location: Golden, CO
Posts: 19
Thanks: 0
Thanked 0 Times in 0 Posts
Tinactin is on a distinguished road
Default

Hi

The '93 variable assist steering used an electronic variable orifice (EVO) valve to control the pressure drop across the hydraulic system.

I haven't found just the EVO valve by itself, but you can get a remanufactured pump that includes a new EVO valve.

A-1 CARDONE Part # 2042832V1
Tinactin is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
With or With VARIABLE ASSIST Power Steering designerspike 2000-2005 3 02-17-2015 10:58 PM
Do I have variable assist steering? 2004 Bonny noakes General GM Chat 2 09-09-2014 05:09 PM
How do you remove the Electronic Variable Orifice Component on a Power Steering Pump DeathDealer Oldsmobile 7 10-18-2012 06:56 PM
Variable assist steering actuator question thirty6 1992-1999 2 04-08-2005 02:30 PM
Variable assist power steering question DJ SHO 1992-1999 8 07-13-2004 09:12 AM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 02:50 AM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.