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I am trying to tie into the vss pulse for an add on cruise control and cannot find the vehicle speed sensor.

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It is usually located on the right side of the transmission. Of Course this varies by make, year and model.

Posted on Jul 15, 2010

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Does vss affect cruise control on 95 dodge van 3500


yes
the VSS (vehicle speed sensor ) communicates the vehicle speed to the cruise control to allow it to energize or stop when the vehicle speed is too slow
it does that through the ECM unit

Oct 01, 2016 | Dodge Cars & Trucks

1 Answer

1984 Buick Skylark speed sensor replacement


Don't you m Vehicle Speed Sensor (VSS)

Print


OPERATION

The VSS is located on the transmission and sends a pulsing voltage signal to the ECM which is converted to miles per hour. This sensor mainly controls the operation of the TCC system, shift light, cruise control and activation of the EGR system.


TESTING

  1. To test the VSS, backprobe the VSS terminals with a high impedance voltmeter (set to the AC voltage scale).
  2. Safely raise the entire vehicle using jackstands, so the wheels can rotate freely. Make absolutely sure the vehicle is stable.


CAUTION Do not perform this procedure in a closed area. If the vehicle were to fall from the jackstands during the procedure, it could travel on its own, possibly causing severe bodily injury, as well as property damage.
  1. Start the vehicle, and place it in gear.
  2. Verify that the VSS voltage increases as the drive speed increases.
  3. If the VSS does not produce any AC voltage, or the voltage does not change according to vehicle speed, it can be considered faulty.


REMOVAL & INSTALLATION

See Figure 1

0900c1528025f7b6.jpg enlarge_icon.gifenlarge_tooltip.gif

Fig. Fig. 1: The VSS is usually located in the right rear of the engine compartment-2.3L engine

  1. Disconnect the negative battery cable.
  2. Raise and safely support the vehicle.
  3. Detach the VSS lead from the transaxle.
  4. If necessary, unfasten the governor housing bolts, then remove the housing.
  5. Unfasten the bolt or screw and retainer, then remove the VSS assembly from the vehicle. Remove and discard the O-ring.

To install:
  1. Lubricate a new O-ring with sychromesh transaxle fluid part no. 12345349 or equivalent, then install on the sensor.
  2. Install the VSS assembly, then secure with the retainer and bolt/screw.
  3. If removed, install the governor housing and secure with the retaining bolts.
  4. Attach the VSS lead to the transaxle.
  5. Carefully lower the vehicle.
  6. Connect the negative battery cable
  7. ean 1994

Jun 20, 2012 | 1984 Buick Skylark

1 Answer

Where is the vss located on a 95 gtp


Hi Eric:
The VSS is located on the transmission and sends a pulsing voltage signal to the ECM which is converted to vehicle speed. This sensor mainly controls the operation of the TCC system, shift light, cruise control and activation of the EGR system.

THis is the REMOVAL & INSTALLATION...
  1. Disconnect the negative battery cable.
  2. Raise and safely support the vehicle.
  3. Detach the electrical connector from the VSS, then remove the sensor.
  4. Installation is the reverse of the removal procedure.

Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using FixYa, have a nice day.

Feb 09, 2012 | Cars & Trucks

1 Answer

Where is the location of the speed sensor on the 1999 v10 triton f250? Why does my speedo not work?


VSS Sensor The Vehicle Speed (VSS) Sensor input is used by the PCM to determine vehicle speed. The VSS generates a signal that increases in frequency proportionate to vehicle speed. The PCM has a base frequency stored in memory for a distance of one mile. By comparing the input and stored value, the PCM calculates vehicle speed.
VSS types include: photo-optic, permanent magnet generators or hall effect technology. The PCM may use other sensors on the vehicle (ABS Wheel Speed) to validate VSS operation.
VSS information is used to calculate vehicle loads including: torque converter application, cruise control, fuel cutoff/speed governance strategies, instrument panel speedometer and more.
Modified drivetrain components such as final gear sets and/or tires can alter VSS input values to the PCM. Improper signals can alter Torque Converter Clutch (TCC) application, shift points, cruise control operation as well as many other systems relying on vehicle speed input.
Typical VSS comp-00-00-636.gif

WARNING
To avoid personal injury and/or vehicle damage, refer to the service precautions at the beginning of this section.

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The Speedometer may not work due to a break in the wire for the VSS, or a bad VSS or a bad instrument cluster.

Oct 08, 2010 | Ford F-250 Cars & Trucks

1 Answer

Speedometer wont work


Most cars have one main vehicle speed sensor (vss). The VSS in front wheel drive cars is mounted in the transmission. A gear in the tranny turns a small gear on the VSS. If a tooth of the gear on the VSS is damaged, you can get that erratic speedometer jumping like you're experiencing. A malfunctioning VSS can cause problems with shifting and with the activation of the anti-lock braking system and cruise control. Have a Transmission shop inspect your VSS and replace if necessary, if your handy with tools. you can buy the VSS and replace you self. The speed sensors on the Galant are called pulse generators and need to be replace as a set. Located outside of the transmission right on top.
Good luck!

Dec 09, 2009 | 2000 Mitsubishi Galant

2 Answers

I just bought a 2004 Nissan Frontier Crew Cab. The problem is a faulty cruise control, you press the on button ant it turns on in the dash board but it doesn't works you press the set button and it jut...


Call the dealer who sold you this car while it is still under warranty and insist that they repair it. The cruise control is quite a complex system and a scan is required to isolate the problem.

If you care to learn a bit more about the system read on:
Cruise control systems are comprised of electronic and mechanical subsystems. This is how they work.
We all know that the things that control the speed of the car are the gas pedal and the brakes. And the brain that normally controls the speed of the car is the brain of the driver. The driver senses the speed by looking at the speedometer and then adjusting the pressure on the gas pedal or the brakes to compensate for variations in the desired speed. The cruise control system does the same thing with one exception. It only controls the gas pedal - it doesn't even know there are brakes in the car!!
The vehicle's speed sensor which is mounted on the output shaft of the transmission (the thing that drives the wheels) sends electrical pulses to the computer, pulses which are generated by a magnet spinning past a sensor coil. When the vehicle's speed increases the frequency of the pulses increases. For any given speed of the vehicle there is a corresponding pulse frequency. It is this pulse frequency which the cruise control tries to maintain as a constant. You think of it as the vehicle's speed.
The brains of the control box of the cruise control has three functions. First, it stores the speed of the vehicle when you press the "set" button whild travelling at the desired speed. It keeps this value in its memory until you turn the ignition off. Second, it receives the pulses from the transmission sensor and compares the frequency of those pulses to the frequency value stored in its memory - the set point. Third, it sends pulses to a vacuum controlled diaphragm connected to the accelerator linkage. The pulses it sends regulates the amount of vacuum the diaphragm receives. The more pulses, the more vacuum and the more vacuum the more force on the accelerator linkage. The system continues to add vacuum force until the set point speed is reached. At that point the system modulates the amount of vacuum the diaphragm receives in an effort to maintain the number of pulses coming from the speed sensor as close to the stored value as possible.
OK, so this "brain" works just fine in controlling the speed of the vehicle until something goes wrong. What can go wrong?
First, the VSS, the thing that sends pulses to the brain might fail. Normally the speedometer also fails so that's pretty easy to diagnose.
Next, the power to the brain can be interrupted. A blown fuse or a corroded connector can prevent the brain from working correctly or at all.
Next, the brains can lose its ability to function. A faulty component can prevent the brain from doing its thing. The brain is a pretty sophisticated box that contains a lot of electronic components including a microprocessor. NOrmally when the brains fail you need to replace the box..
The vacuum diaphragm can develop a leak. If that happens then the cruise control might set and hold the speed for some time however if the leak is larger than the supply line and modulator can add vacuum to the system the system will slowly lose control and the vehicle will slow down. This can also happen if the vacuum line to the diaphragm is cracked or loose.
Finally, the linkage that connects the diaphragm to the accelerator linkage can fail. Some aftermarket cruise control systems use a short length of what looks like fat key chain - bead chain. I have seen several units fail when the chain simply breaks.
Diagnosis of a failed system can be a complex process. Most vehicle shop manuals have a multi-page diagnostic flow chart that the dealer mechanics use to solve failures. If there isn't an obvious problem like a broken wire, a blown fuse or a leaking vacuum line then the problem most likely lies in the brains of the unit or in the switch that sets the speed and contains the other functions of resume and accelerate. Most cruise control switches are on the directional signal stem, a multifunction switch assembly with fine wires that break due to the constant motion of the wires as you use the directionals in your daily travels.

Nov 04, 2009 | Nissan Frontier Cars & Trucks

2 Answers

No overdrive or speedo


Gearbox speed sensor unit has failed .

Aug 23, 2009 | 1993 Isuzu Trooper

2 Answers

Is a Vehicle Speed Sensor and Transmission Speed Sensor the same?


YEP BOTH CAN MEAN THE SAME.BUT REAL NAME IS VECHICLE SPEED SENSOR.EVERY VECHICLE YOU LOOK UP YOU WILL SEE VSS SENSOR.

Aug 18, 2009 | 2000 Jeep Cherokee

1 Answer

Broken speedometer on 1997 ford explorer


does your cruise control work? If not, check the wiring from the VSS to the speedo cluster. Check VSS connector closely for pin pudhout or corrosion

Sometimes, the VSS siganl is converted by the instrument cluster and sent to the PCM and speedo.

Check engine light on?


Speedometer
The electronic speedometer (17255) receives a speed signal from the vehicle speed sensor (VSS) (9E731). This sensor is also used to sense vehicle speed for the engine management system and to regulate the cruise control when equipped.
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Vehicle Speed Sensor The Vehicle Speed Sensor (VSS) (Figure 53) is a variable reluctance or Hall-effect type 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.

May 12, 2009 | 1997 Ford Escort

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