Question about 2000 Ford Windstar

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Output speed sensor malfunction. Changed the VSS on the trans, no luck. Is there another sensor and where is it? 2000 ford windstar 3.8

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  • afnuke Mar 17, 2011

    All fuid levels fine. Van goes into limp home mode most of the time, but not all the time. Changes
    gears smoothly. OD light sets off when first gears goes up to many RPMs into 2nd. No other problems. seems random because 2 days over the last week it didnt go off and run just fine. the first error I got was the speed circuit sensor malfunction and since I replaced the VSS it now shows that the error is the output speed sensor. It has ABS and I was told by one person that the computer gets the speed from the ABS sensor on this vehicle but Im not sure if thats true, there may be a sensor under the heat shield on the transaxel. I have 5 kids and one car and no job, I would happily pay someone to fix it if I could afford to, any help would be greatly appreciated.
    BTW....I use to work cleaning bays at a FORD dealership and now I am really missing my friends there!!

×

1 Answer

Changing parts is not how you find and resolve issues

You need a professional scan tool,check for codes
Not all codes are Generic,some are MFG Specific

Then you need system knowledge or trouble charts,
to decide the proper repair

I basically said, you can not work on your own vehicle

Posted on Mar 17, 2011

  • afnuke Mar 17, 2011

    no ****, I know they are model specific. The first code was did show a faulty VSS and I changed it......thats what ANY mechanic would do. I was also a machanic in the USAF oh, and by the way I also spent time building nuclear weapons so by no means am I and a moron. I could change the tranny myself if I wanted. Any idiot knows you trouble shoot first, you dont just change the tranny. I have a code reader and CAN read my own codes, I just dont mess with trannys that much. I have rebuilt a few motors back in the day .....I just hate all the electronics.

  • Anonymous Mar 18, 2011

    Didn't mean to upset you,but codes do not mean
    to change anything. They are sensors out of range
    You have to component test once you get a code
    You can't do that with a code reader

×

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04 f150 heritage speedo moves but not over 10 mph and trans won't shift gears. i changed all sensors,traced all wires.


taking your vehicle to a qualified reair shop to have it diagnosed would be a good thing to do . You could not have traced all wires ! Because i'm sure you haven't any idea how this works . An a factory scan tool is a must to diagnose this .Do you know what ford SCP data network is ?
Speedometer
The instrument cluster receives the vehicle speed signal from the powertrain control module (PCM) over the standard corporate protocol (SCP) network and displays it on the speedometer gauge. If the instrument cluster receives no vehicle speed signal after one second, the speedometer defaults to 0.0 km/h (0.0 mph).

Vehicle Speed Sensor
The vehicle speed sensor (VSS) (Figure 52) is a variable reluctance or Hall-effect sensor that generates a waveform with a frequency that is proportional to the speed of the vehicle. If the vehicle is moving at a relatively low velocity, the sensor produces a signal with a low frequency. As the vehicle velocity increases, the sensor generates a signal with a higher frequency. The PCM uses the frequency signal generated by the VSS (and other inputs) to control such parameters as fuel injection, ignition control, transmission/transaxle shift scheduling and torque converter clutch scheduling.

P0500 - Vehicle Speed Sensor (VSS) Malfunction Indicates the powertrain control module (PCM) detected an error in the vehicle speed information. Vehicle speed data is received from either the vehicle speed sensor (VSS), the transfer case speed sensor (TCSS) or the anti-lock brake system (ABS) control module. If the engine RPM is above the torque converter stall speed (automatic transmission) and the engine load is high, it can be inferred that the vehicle must be moving. If there is insufficient vehicle speed data input, a malfunction is indicated and a DTC is set. On most vehicle applications the malfunction indicator lamp (MIL) is triggered when this DTC is set.
  • Open in the VSS+/VSS- harness circuit.
  • Open in the TCSS signal or the TCSS signal return harness circuit.
  • Short to GND in the VSS harness circuit.
  • Short to GND in the TCSS harness circuit.
  • Short to PWR in the VSS harness circuit.
  • Short to PWR in the TCSS harness circuit.
  • Damaged drive mechanism for VSS or TCSS.
  • Damaged VSS or TCSS.
  • Damaged wheel speed sensors.
  • Damaged wheel speed sensor harness circuits.
  • Damage in the module(s) connected to the VSC/VSS circuit.
  • Open or short in the vehicle speed circuit VSS signal between the ABS VSS signal output and the VSS signal inputs to the PCM and other modules (Excursion and F-Super Duty).
Monitor the VSS PID while driving vehicle. This DTC is set when the PCM detects a sudden loss of vehicle speed signal over a period of time. If vehicle speed data is lost, check the source of where the vehicle speed input originates from: VSS, TCSS or ABS. Note: On some MSOF applications, VSS and TCSS PID can be monitor. However if no TCSS PID is available and VSS PID is zero, TCSS circuitry frequency must be checked for loss of sensor signal. If another vehicle electronic module has generated the P0500 and the vehicle does not receive its vehicle speed input from one of the above mention sources (VSS, TCSS or ABS). Check the PCM for Output Shaft Speed Sensor (OSS) DTCs. On OSS applications the PCM uses the OSS to calculated the vehicle speed. If no OSS DTCs are found check for correct PCM configuration. Check PCM configuration for correct tire size and axle ratio. P0501 - Vehicle Speed Sensor (VSS) Range/Performance Indicates the powertrain control module (PCM) detected an error in the vehicle speed information. This DTC is set the same way as P0500, however the malfunction indicator lamp (MIL) is not triggered.
  • Refer to possible causes for P0500.
Refer to Diagnostic Aids for P0500. P0503 - Vehicle Speed Sensor (VSS) Intermittent Indicates poor or noisy VSS performance. Vehicle speed data is received from either the vehicle speed sensor (VSS), the transfer case speed sensor (TCSS), or the anti-lock brake system (ABS) control module.
  • Noisy VSS/TCSS input signal from the radio frequency interference / electro-magnetic interference (RFI/EMI) external sources, such as ignition components or the charging circuit.
  • Damaged VSS or driven gears.
  • Damaged TCSS.
  • Damaged wiring harness or connectors.
  • Malfunction in the module(s) or circuit connected to the VSS/TCSS circuit.
  • After market add-on.
Monitor the VSS PID while driving the vehicle. Check for intermittent vehicle speed indication. Verify the ignition and charging system are functioning correctly.

Mar 25, 2017 | Cars & Trucks

1 Answer

Vss


VSS is the Vehicle Speed Sensor; newer vehicles no longer have a speedometer cable, the speedometer is electronic and receives a signal from the VSS located on the transmission. No signal from the VSS will set a code, cause the speedometer to malfunction and interfer with the ABS system.

Apr 03, 2013 | 2000 Ford Windstar

1 Answer

Need help locating vss on trans for a 2000 F350 4X4 7.3 motor


1. Your ABS/ VSS can be removed and cleaned with just a clean rag, no need for wd-40 or any other solvent, also carefully clean out the hole on top of the differential, lift the vehicle (place in neutral) and check the sprocket wheel inside the pumpkin for possible missing teeth or to see if it is loose.

2. The VSS (part # F85F-9E731-AA) can also be tested with an ohms meter, it should measure ~1.9 K-ohm or higher (lower than 1.9 requires replacement).

3. The VSS is a hall-effect sensor, connect a volt meter to the sensor connector and wave a piece of metal (pair of pliers or flat metal) about a half inch away from the sensor, and you will consistently see a variation in voltage, if no movement on the volt meter is observed, replace the sensor.

4. You also have the two front wheel ABS sensors, try cleaning them first, and carefully reinstalling them.

5. When the VSS sensor is malfunctioning, the PCM may try to get input from the TSS (turbine speed sensor, top of the transmission), and as it turns out, the same return wire is used by the OSS (output speed sensor, tail end of transmission), check these two sensors also, clean them and test them (1.10 K-ohm or higher). These are also Hall Effect sensors, so check for voltage as described in paragraph 3 above.

6. Pay attention to see if your ABS light blinks when you start the vehicle, just before it stays solid. If this is happening, count the number of blinks, as this is actually a code and the blinking means the vehicle is trying to communicate with you.

7. Last, if nothing above corrected the problem, I would start tracing RFI (radio frequency interference), one sure area is usually your fuel pump (wires running along side VSS wiring. ABS/VSS wiring is routed directly to the ABS module.

I hope this information works for you.


There are two "speed sensors" though that can be confused at the parts store. They don't look the same but they are listed almost the same. The one on the rear diff is listed as the "ABS speed sensor"....the one on the tranny is listed as the "Speed sensor" The rear one is the cheapest and easiest to replace...about $12.

Feb 24, 2013 | Ford F-350 Cars & Trucks

1 Answer

Car drives in reverse but no other gear selector


Did you ever figure out the problem? I'm having the same problem on my car

May 17, 2012 | 2003 Ford Windstar

2 Answers

Where is my speed sensor located?


Hi.

The vehicle speed sensor or VSS is located on top of the transmission, on the output shaft. This sensor provides input to the speedometer on instrument cluster. There are also 4 wheel speed sensors (one on each wheel). Their primary function is to detect wheel speed to control ABS.

Below a picture of the VSS sensor:

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Sep 08, 2011 | 1999 Ford Windstar

1 Answer

Speed sensor wire where is it? how i can repair or change'


The Vehicle Speed Sensor (VSS) is a magnetic pick-up sensor that sends a signal to the Powertrain Control Module (PCM) and the speedometer. The sensor measures the rotation of the output shaft on the transaxle and sends an AC voltage signal to the PCM which determines the corresponding vehicle speed.

The Vehicle Speed Sensor is located mounted on transmission ...


zjlimited_1485.jpg

Fig. VSS with connector and driven gear

Hope helps.

Jun 25, 2011 | 1999 Ford Windstar

2 Answers

Where is vehicle speed sensor(vss) located


on the output shaft of trans on passenger side a very tight spot two people make the job easier. if no hoist find reputable local trans shop should only be about 1 hrs labor

Nov 10, 2009 | 1998 Ford Windstar

1 Answer

What cause the O/d light blink


it's usually because you have a bad VSS, Vehicle Speed Sesnor. It sends a signal from the trans to the speedo and engine computer. Usually speedo stops working too.

Vehicle Speed Sensor (VSS) The vehicle speed sensor (VSS) (9E731) is a magnetic pickup that sends a signal to the powertrain control module (PCM) (12A650) . This VSS signal transmits vehicle speed to the powertrain control module .

Vehicle Speed Sensor (VSS)


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Nov 10, 2009 | 1998 Ford Windstar

1 Answer

Speed sensor on 2000 ford f150 4x4 triton 4.6


if this helps, please rate as fixya. thanks.

Vehicle Speed Sensor The vehicle speed sensor (VSS) (Figure 43) is a variable reluctance or Hall-effect sensor that generates a waveform with a frequency that is proportional to the speed of the vehicle. If the vehicle is moving at a relatively low velocity, the sensor produces a signal with a low frequency. As the vehicle velocity increases, the sensor generates a signal with a higher frequency. The PCM uses the frequency signal generated by the VSS (and other inputs) to control such parameters as fuel injection, ignition control, transmission/transaxle shift scheduling and torque converter clutch scheduling.


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For the 4R70W trans vehicles

Vehicle Speed Sensor (VSS)

The vehicle speed sensor (VSS) is model dependent. Possible sources of vehicle speed input are, anti-lock brake sensor (ABS), a gear-driven vehicle speed sensor (VSS), or the transmission output shaft speed (OSS) sensor. On 4x4 applications with a manual shift transfer case, the transfer case speed sensor is the source of vehicle speed. The VSS signal is either an AC signal whose frequency changes with vehicle speed, or an SCP data message depending on the source. Some vehicles have both. The vehicle speed signal is an input to various vehicle sub-systems such as the powertrain control module (PCM), instrument cluster (speedometer and odometer), speed control systems, etc. The vehicle speed source must be operational to enter output state control mode for diagnostics.

If you have a 4R100 trans, it is different.

Mar 12, 2009 | 2000 Ford F150 Flareside SuperCab

1 Answer

INTERMITENT SPEEDOMETER MALFUNCTION, OK FOR AWHILE THEN NEEDLE DROPS TO ZERO ODOMETER STOPS


Likely one of the speed sensors on the trans,and depending on year of the vehicle,some of the 90's models had the Vehicle Speed Sensor (VSS) mounted on the transmission.

Aug 14, 2008 | 2000 Ford Focus

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