Question about 1988 Ford Taurus

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Power steering pulses only when turning - 1988 Ford Taurus

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  • Samuel Charles Spriggs May 11, 2010

    Have you checked the fluid level in the power steering pump? Have you checked for a loose drive belt on the power steering pump? Charlie



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There are several thing to check. Check the fluid level, with engine off, check how tight the belt is, and also look at the belt surface that is grooved. see if the are a lot of weather cracks. You may need a belt tensioner or belt or both.

Finally your PS pump may be weak. Try doing a flush on the system. If your tensioner is good, belt is good, then always try a flush before you condemn the pump and rack.

Hope this helps, it is the best I can do with the information available.

Posted on Sep 24, 2009


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Your best bet ,take it to a qualified repair shop ! P0351, ignition coil A primary/secondary circuit-------what does this operate
The electrical circuit for the coil for cylinder # 1 , could be the wiring , coil or the driver (transistor)inside the PCM - engine computer . Replacing the PCM would need to be programmed , DEALER ONLY . Just replacing parts isn't going to fix this . Doing the diagnostic's for the code . Codes don't tell you a part is bad or needs to be replaced . All codes have a diagnostic test procedure that has to be followed to find the cause of the code setting . Don't know where you came up with B0050 & B0455 Has nothing to do with traction control . These codes would start with C . tune up right? No .
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The steering wheel position sensor (SWPS) provides one analog signal and 3 digital signals. The digital signals, Phase A, Phase B and marker pulse, are direct inputs to the rear wheel steering control module. The analog signal is input to the BCM and is sent via a class 2 message to the rear wheel steering control module. Battery voltage is supplied to the sensor from the cruise fuse to operate the digital portion of the sensor.
A 12-volt reference is provided by the rear wheel steering control module to the Phase A, Phase B, and marker pulse circuits of the SWPS. The module monitors each circuit as it is either remains high or is pulled low by the SWPS.
The scan tool displays the Phase A and Phase B data parameters as either HIGH or LOW when the steering wheel is being rotated. Each change from HIGH to LOW, or LOW to HIGH, represents one degree of steering wheel rotation. When observing the Phase A and Phase B data with the scan tool, the parameters will not always display the same value at the same time.
The marker pulse is a digital pulse signal that is displayed as HIGH by the scan tool with the steering wheel angle between +10 degrees and -10 degrees. At greater than 10 degrees steering wheel angle in either direction, the marker pulse data will be displayed as LOW.
The BCM provides the 5-volt reference and low reference for the analog portion of the SWPS. The BCM reads the SWPS analog signal in voltage, which is typically 2.5-volt with the steering wheel on center. The voltage ranges from 0.25-volt at approximately 1 full turn left to 4.75-volt at approximately 1 full turn right. The voltage will then remain at that level for the remainder of steering wheel travel. This voltage can be monitored in BCM data display.
The rear wheel steering control module receives the analog signal via a class 2 message from the BCM. When monitoring the rear wheel steering data, this information is displayed in the Steering Wheel Angle (TBC) Data parameter, and is shown in degrees. The range of the display is +/- 225 degrees, with negative numbers representing steering input to the left, and positive numbers representing input to the right.

This does not mean the sensor is bad !!!!!!!!!! Take it to a qualified repair shop before you make it non fixable .

Quadrasteer™ is a 4-wheel steering system that dramatically enhances low speed maneuverability, high speed stability, and towing capability. The system is an electrically powered rear wheel steering system comprised of the following components:
You have no idea what your messing with .
Rear Wheel Steering Control Module: The rear wheel steering control module controls all functions of the rear wheel steering system . The module has a dedicated power feed line from the under hood fuse holder. The fuse is a 125 amp mega fuse . The wiring is routed to the rear of the vehicle. The rear wheel steering control module is located above the rear mounted spare tire. The rear wheel steering control module uses the inputs listed above to determine when and how far to turn the rear wheels. The rear wheel steering control module also uses the hall switches in the steering gear motor , shorting relay , and motor control relay to monitor and control the direction and speed the motor operates. The rear wheel control module also controls the duty cycle of the phase leads to the motor . The motor control relay is part of the rear wheel steering control module and is not serviceable . The rear wheel steering control module uses both a class 2 and a discrete vehicle speed sensor signal . The system will not function without a discrete vehicle speed sensor signal . The rear wheel steering control module uses the 2 vehicle speed sensor signals for comparison purposes . The TBC sends a class 2 message for the analog portion of the signals from the steering wheel position sensor. The rear wheel steering control module uses inputs from the steering wheel position sensor to determine steering wheel position and rate of change. The rear wheel position sensor signals provide the rear wheel steering control module with rear wheel position data. The rear wheel steering control module will send out a class 2 message to the IPC to turn on and off the amber Service 4-Wheel Steering System Indicator. The rear wheel steering control module controls the indicators in the mode switch on the dash .

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First off, verify that the power steering reservoir has the right amount of fluid and that it looks clean (not dirty brown or black). If so, try burping the reservoir to get any air out. Just start the car with the cap off and turn the wheel lock to lock, back and forth several times. This will force any air out of the system. If the fluid is low, top it off and take a drive to see if it's cured. If the fluid is filthy, use a turkey baster to **** out as much as you can, refill it with new fluid, burp the system again to circulate the fluid, and repeat the drain and refill procedure - do it a few times to try and get as much of the old stuff out as you can.

If you still have a problem, you should inspect (or have inspected) the rack and pinion, power steering pump and pressure lines, and also the bushings in your front suspension, as well as the inner and outer tie rods - any of those could cause the problem you're having.

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