Question about Isuzu Rodeo

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Isuzu rodeo 2001 p0500

Speedometer stopped working. Cruise control also does not work. Vehicle still seems to shift ok for the most part. Replaced VSS but that did not fix the problem. Removed VSS and manually rotated and the speedometer jumps (old and new VSS). Checked all fuses-no problems. Have hand tightened the VSS + a quarter turn. Wiring appears to be ok but have not continuity checked. Not sure what step to take next

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

mechanicm639
  • 253 Answers

SOURCE: replaced TH700R4 on 1988 c/k1500.now cruise

I would look at the wiring around the bellhousing first to be sure you have not pinched any wires. On that truck, behind the glove box is the PCM, and another white colored box called a DRAC. The DRAC controls the speedometer not the PCM. Look into replacing it. Also check your trans and gauge fuses. Good Luck.

Posted on May 06, 2009

  • 2 Answers

SOURCE: transmission doesnt shift abs & brake light on speedometer doesnt work

I had the same problem with ABS light and speedometer, I was told that it is the transmission control module. It has not yet stopped shifting but I have had times where it just wont stay running. It will start and then stall. Hope this helps.

Posted on May 24, 2009

  • 4 Answers

SOURCE: speedometer not working.but the cruz control works

apart from the vss there is another speed sensor on the transmission. (counter shaft speed sensor)its a 125 dollar sensor.
hears a pic.

b08c39b.png

Posted on Dec 29, 2009

  • 1 Answer

SOURCE: 1995 ford taurus no speedometer, abs light, won't shift correctly

speed sensor needs replaced

Posted on Jan 15, 2010

  • 1 Answer

SOURCE: Vehicle had a rough automatic transmission shift

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

Posted on Nov 21, 2010

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My speedometer isnt give a accurate reading, my cruise control stopped working and it seems my transmission isnt shifting correct. I changed my vss on the tranny and it started working then i started...


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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.
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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.

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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.
----------------------------------------------------------------------------------
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.

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The VSS sends a signal to the speedo cluster. Cluster converts signal and sends it to speedo and odometer and also to engine computer.

If your cruise control also does not work, it is VSS.

Try prying back and forth at base after soaking.

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