Speed proportional steering, standard, performance racks? - DodgeIntrepid.Net Forums - Dodge Intrepid, Concorde, 300m and Eagle Vision chat
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post #1 of 20 (permalink) Old 10-26-2010, 07:37 PM Thread Starter
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Speed proportional steering, standard, performance racks?

I need a steering rack for my 98 dodge intrepid es 3.2 and when I ask for pricing or look online it wants to know if i want speed proportional steering, standard or performance steering.

I googled them all I found out was that speed proportional steering allows you have to have more control at low speeds but not high speeds? that's kind of dumb.

Can I use anyone on my car or is there a specific one? Which one is the best?

also i live in canada now and the prices are like twice the amount and i'm trying to find a way to buy it cheap, but if i order them from usa i think i have to pay some custom fees
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post #2 of 20 (permalink) Old 10-26-2010, 08:46 PM
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Quote:
Originally Posted by Horus View Post
I need a steering rack for my 98 dodge intrepid es 3.2 and when I ask for pricing or look online it wants to know if i want speed proportional steering, standard or performance steering.

I googled them all I found out was that speed proportional steering allows you have to have more control at low speeds but not high speeds? that's kind of dumb.

Can I use anyone on my car or is there a specific one? Which one is the best?

also i live in canada now and the prices are like twice the amount and i'm trying to find a way to buy it cheap, but if i order them from usa i think i have to pay some custom fees
PM Cokey or TFC and see if they can get you one. Isnt there a part number on the one you have???
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post #3 of 20 (permalink) Old 10-26-2010, 09:17 PM
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Speed proportional steering requires the right BCM doesn't it?
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post #4 of 20 (permalink) Old 10-26-2010, 11:09 PM
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This vehicle is available with 3 different types of power steering.
They are standard, firm-feel, or
speed-sensitive variable-effort (speed-proportional) power steering.
The firm-feel steering gear is physically the same
as the standard gear used on some models. The difference
is internal to the gear. The internal calibration
gives the driver a more firm feel at the steering
wheel. It is serviced the same as the standard steering
gear.
The speed-sensitive variable-effort power steering
system, better known as speed-proportional steering,
is an electronically controlled, variable-effort type
power steering system. The steering gear has an
externally mounted control valve which in conjunction
with mechanical components varies steering
effort at different vehicle speeds. At low speeds lower
steering effort is provided to allow ease in steering
and parking. At higher speeds, higher effort is provided
to give a more firm, responsive steering feel.

OPERATION - SPEED PROPORTIONAL
STEERING GEAR
The speed-proportional power steering system
reduces the steering effort required by the driver for
low speed driving and parking maneuvers. Also, at
higher speeds, more steering effort is required providing
a more firm, responsive feel to the steering
system and driver.
With the engine running and the vehicle speed
between 0 km/h (0 mph) and approximately 32 km/h
(20 mph), minimum steering effort is required.
Between approximately 32 km/h (20 mph) and 100
km/h (60 mph), power steering effort will gradually
increase based upon vehicle speed. Above approximately
100 km/h (60 mph), maximum steering effort
is provided by the speed proportional steering system.
Variable-effort power steering is provided by controlling
power steering fluid pressure at the power
steering gear. A solenoid control valve located on the
steering gear (Fig. 2) is used to control power steering
gear return fluid pressure. The pressure is controlled
by varying the size of an orifice.
The variable-assist speed-proportional solenoid control
valve is controlled by the Body Control Module
(BCM). The BCM receives the vehicle speed signal
sent from the Powertrain Control Module (PCM).
Upon receiving the vehicle speed signal from the
PCM, the BCM converts that speed signal into an
electrical current usable by the solenoid control valve
for controlling the variable effort of the power steering
system.

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post #5 of 20 (permalink) Old 10-27-2010, 02:56 PM
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I added the speed proportional steering system to my 01 ES 3.2 a couple of years ago. It has a solenoid on the steering rack that open up at idle and lower speeds making the wheel turn with little effort. It gradually closes as you drive faster.

At highway speed the steering is stiffer, just what you want. It made a world of difference in how the car handles. I highly recommend it, especially if you have to change the rack anyway. You will need the wiring and a BCM with the programing. Ross helped me with the premium BCM and another member got the wiring harness from the solenoid to the proper plug that goes to the BCM.
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post #6 of 20 (permalink) Old 10-27-2010, 07:22 PM
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FWIW only the LHS '99-01 had the Speed Proportional set up AFAIK
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post #7 of 20 (permalink) Old 10-27-2010, 07:34 PM
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Quote:
Originally Posted by 300maximilien View Post
FWIW only the LHS '99-01 had the Speed Proportional set up AFAIK
I knew it was on the LHS, but did every LHS within that year range come with it?
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post #8 of 20 (permalink) Old 10-27-2010, 08:41 PM
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My 2002 Limited has the proportional steering
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post #9 of 20 (permalink) Old 10-28-2010, 12:45 PM
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Quote:
Originally Posted by sc.intrepid View Post
My 2002 Limited has the proportional steering
that I didn't know....maybe they continued to put it in the Cord Limiteds (which are as we know rebadged LHSs!)
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post #10 of 20 (permalink) Old 10-28-2010, 12:45 PM
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Quote:
Originally Posted by CaptainMorgan View Post
I knew it was on the LHS, but did every LHS within that year range come with it?
From what I have read, yes it was standard on the LHS
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post #11 of 20 (permalink) Old 10-28-2010, 03:34 PM
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How can I tell if my 98 ES has it? What should I be looking for?

Joe
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post #12 of 20 (permalink) Old 10-28-2010, 07:53 PM
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Quote:
Originally Posted by stlrj View Post
How can I tell if my 98 ES has it? What should I be looking for?

Joe
An electrical connection on the steering rack if I read the above posts right. I'm betting it don't.
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post #13 of 20 (permalink) Old 10-28-2010, 10:56 PM
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My 97 ES has the SPS rack, the connectors are near the brake booster/master cylinder.
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post #14 of 20 (permalink) Old 10-29-2010, 12:53 AM
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How about a photo? And are we sure that it requires a diferent BCM?
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post #15 of 20 (permalink) Old 10-29-2010, 10:24 AM
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Quote:
Originally Posted by 98IntrepidTan View Post
are we sure that it requires a diferent BCM?
I would think that the BCM would have the programming(like autostick) for speed proportional steering, but it might not.


Here is some more info from the 2004 factory parts manual. There appears to be 4 different rack part numbers :
NOTE:Sales Codes
[SBA]=STEERING - POWER
[SBC]=STEERING - SPEED SENSITIVE
[SBP]=STEERING - PERFORMANCE
[SDB]=SUSPENSION - HEAVY DUTY
[SDD]=SUSPENSION - PERFORMANCE
[SDE]= SUSPENSION - SPORT

1 GEAR, Power Steering
05003933AB 1 [SBA]
05003940AB 1 [SBP, SDB, SDD]
05073185AA 1 [SBC]
05083091AA 1 [SBP, SDE]
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