need mechanic help
Le Mans Master
Joined: Oct 2007
Posts: 6,868
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From: Kelso Washington
St. Jude Donor '09, '13, '15
There you are!! Thanks very much for replying.
All us shade-tree troubleshooters like to know what the final verdict is.
I still vote EVO steering position sensor.
Did you check codes?
All us shade-tree troubleshooters like to know what the final verdict is.
I still vote EVO steering position sensor.
Did you check codes?
Thread Starter
Racer
Joined: Dec 2001
Posts: 333
Likes: 1
From: Laughlin NV.
Someone else asked about the Z51 Packege. Yes it does have it. Does that mean it should have a power steering cooler?
Race Director
Joined: Aug 2003
Posts: 13,421
Likes: 8
From: Lake Mary Florida
I did check codes. This car always has several history codes in it, but nothing to do with power steering. The closest code to that, would be one about the telescoping steering wheel not saving the memory. How would I go about checking the EVO steering position sensor?
Someone else asked about the Z51 Packege. Yes it does have it. Does that mean it should have a power steering cooler?
Someone else asked about the Z51 Packege. Yes it does have it. Does that mean it should have a power steering cooler?
So with a cooler installed, and you have these other issues, then I would start to isolate that overheating fluid. Need to look at the FSM to what's up on this one.
Race Director
Joined: Aug 2003
Posts: 13,421
Likes: 8
From: Lake Mary Florida
Those who referenced "EVO steering position sensor", what is that?
I have reviewed the FSM and see no reference to a term like that or anything similar.
Back to the OP, what is the age/condition of the drive belt?
What position is the belt tensioner sitting at, there are marks on the body of it.
I have reviewed the FSM and see no reference to a term like that or anything similar.
Back to the OP, what is the age/condition of the drive belt?
What position is the belt tensioner sitting at, there are marks on the body of it.
Thread Starter
Racer
Joined: Dec 2001
Posts: 333
Likes: 1
From: Laughlin NV.
Those who referenced "EVO steering position sensor", what is that?
I have reviewed the FSM and see no reference to a term like that or anything similar.
Back to the OP, what is the age/condition of the drive belt?
What position is the belt tensioner sitting at, there are marks on the body of it.
I have reviewed the FSM and see no reference to a term like that or anything similar.
Back to the OP, what is the age/condition of the drive belt?
What position is the belt tensioner sitting at, there are marks on the body of it.
Le Mans Master
Joined: Oct 2007
Posts: 6,868
Likes: 770
From: Kelso Washington
St. Jude Donor '09, '13, '15
Those who referenced "EVO steering position sensor", what is that?
I have reviewed the FSM and see no reference to a term like that or anything similar.
Back to the OP, what is the age/condition of the drive belt?
What position is the belt tensioner sitting at, there are marks on the body of it.
I have reviewed the FSM and see no reference to a term like that or anything similar.
Back to the OP, what is the age/condition of the drive belt?
What position is the belt tensioner sitting at, there are marks on the body of it.
s and from model to model.
A '98 Chev pickup I had was having similar problems with the steering. Steering inputs would be difficult sometimes and overly-easy other times. It turned out to be the steering wheel position sensor and was also referred to as an EVO sensor. EVO standing for "Electronic Variable Orifice" that controlled pump fluid flow/pressure depending upon speed and other inputs such as how fast the steering wheel input was being turned (from the position sensor).....this all resulted in the variable assist steering we all enjoy....it makes it easy to parallel park and stiffens up the steering at speed.
So I was hoping someone might now if that applies to our Corvettes...since it is a GM technology product.
Last edited by Oh 2 Fun; Apr 25, 2011 at 10:13 PM.
Thread Starter
Racer
Joined: Dec 2001
Posts: 333
Likes: 1
From: Laughlin NV.
If I am looking at the right marks, It looks like it has two marks then a space almost like there is a mark missing then one more mark. It looks like it is about on the second mark
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Race Director
Joined: Aug 2003
Posts: 13,421
Likes: 8
From: Lake Mary Florida
Ok, electrically assisted variable effort system. Hmm registered trademarked MAGNASTEER® is the system. The EBCM controls a bi-directional magnetic rotary solenoid located on the steering gear. The solenoid adjust the amount of assist in order to achieve a given level of driver effort to turn by varying the current flow through the solenoid. . VES variable effort steering uses inputs from the ABS wheel speed sensors and steering wheel position sensor to the EBCM to determine how much effort is needed.
FSM reference Variable Effort Steering. The electromagnetic actuator which is the heart of the system, is known as VES Actuator. It consists of a mulitple pole ring style permanent magnet a pole piece and a electromagnetic coil assembly.
One requires a scan tool to perform the tests and bleed the system.
FSM reference Variable Effort Steering. The electromagnetic actuator which is the heart of the system, is known as VES Actuator. It consists of a mulitple pole ring style permanent magnet a pole piece and a electromagnetic coil assembly.
One requires a scan tool to perform the tests and bleed the system.
Instructor
Joined: Oct 2010
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From: Yangpyeong Gyeonggi-Do
Race Director
Joined: Aug 2003
Posts: 13,421
Likes: 8
From: Lake Mary Florida
BTW it is suppose to move back and forth while operating. It should be free of movement and no binding.
Make sure the grooves of the belt are clean and not collecting material.
Le Mans Master
Joined: Oct 2007
Posts: 6,868
Likes: 770
From: Kelso Washington
St. Jude Donor '09, '13, '15
Ok, electrically assisted variable effort system. Hmm registered trademarked MAGNASTEER® is the system. The EBCM controls a bi-directional magnetic rotary solenoid located on the steering gear. The solenoid adjust the amount of assist in order to achieve a given level of driver effort to turn by varying the current flow through the solenoid. . VES variable effort steering uses inputs from the ABS wheel speed sensors and steering wheel position sensor to the EBCM to determine how much effort is needed.
FSM reference Variable Effort Steering. The electromagnetic actuator which is the heart of the system, is known as VES Actuator. It consists of a mulitple pole ring style permanent magnet a pole piece and a electromagnetic coil assembly.
One requires a scan tool to perform the tests and bleed the system.
FSM reference Variable Effort Steering. The electromagnetic actuator which is the heart of the system, is known as VES Actuator. It consists of a mulitple pole ring style permanent magnet a pole piece and a electromagnetic coil assembly.
One requires a scan tool to perform the tests and bleed the system.
Thanks again. Now I know.
