Power steering sensor ??? - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 05-30-2005, 11:56 AM   #1
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Default Power steering sensor ???

There is a sensor or switch on the power steering pump. Does anyone know what that is for? The wire on mine is broken and has been for some time. I am working on fixing that.
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Old 05-30-2005, 12:24 PM   #2
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Not sure on your year, but I believe its the electrical connector for magna steer...(if they had it then)
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Old 05-30-2005, 04:23 PM   #3
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yup that shlould be for the Magnasteer
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Old 05-30-2005, 08:30 PM   #4
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92 is a little too old for Magna Steer. Its TFE (two flow electronic) steering. Essentially it is a solenoid that increases the pump output at speeds under 20 MPH as you accelerate and under 17MPH as you decelerate. A broken wire would cause the steering effort to be higher at these lower speeds. Magna Steer is controled be the EBTCM and has many other variables to determine steering effort.

Good to see you again TelePlayer.
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Old 05-31-2005, 01:46 PM   #5
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Quote:
Originally Posted by randman1
92 is a little too old for Magna Steer. Its TFE (two flow electronic) steering. Essentially it is a solenoid that increases the pump output at speeds under 20 MPH as you accelerate and under 17MPH as you decelerate. A broken wire would cause the steering effort to be higher at these lower speeds. Magna Steer is controled be the EBTCM and has many other variables to determine steering effort.

Good to see you again TelePlayer.
Even the dealer mechanics didn't know the correct answer to this question when I set out to replace the pump on my '92 SSE supercharged a week ago. One of them told me that it causes the ECM to boost the idle under load, but I didn't believe that.

When you lookup the part to buy a replacement pump, it'* listed as "EVO" but not even the dealer knew what that means...
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Old 05-31-2005, 04:33 PM   #6
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I have no idea what magnasteer is.

I do know that I get a lot of "shuddering" when taking a hard corner at idle... for instance when pulling into the driveway. So maybe this is the reason.

I cut off the connector because I need to add some length to the wires.

These wires and the knock sensor wires are very short. I suggest unplugging all sensors in this harness before removing the rear valve cover or the alternator bracket.
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Old 06-01-2005, 12:41 AM   #7
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Randman is correct. "Two flow electronic" steering. So hopefully when I fix it, I will have easier steering at slow speeds. I have no idea how long it has been this way.
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