2000 Dodge Van no speedometer

Tiny
COFFEY38
  • MEMBER
  • 2000 DODGE VAN
Transmission problem
2000 Dodge Van V8 Two Wheel Drive Automatic

i have no speedometer, the trans. Is still shifting fine, its showing no mph on my scanner. Ive replaced the output speed sensor in the trans and the one in the rear diff.
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Wednesday, October 21st, 2009 AT 7:27 AM

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Tiny
CH112063
  • MEMBER
Does it turn, the transmission output shaft one I mean. Did it come with a new driven plastic gear, or no? Or does it have a magnetic sensor and output shaft reluctor ring? Just rear anti-lock brakes or full ABS? Does it have OD trans, and is OD ok? Is there a code for no speed sensor signal? Thank-you.
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Friday, October 23rd, 2009 AT 10:44 AM
Tiny
COFFEY38
  • MEMBER
[quote="ch112063"]Does it turn, the transmission output shaft one I mean. Did it come with a new driven plastic gear, or no? Or does it have a magnetic sensor and output shaft reluctor ring? Just rear anti-lock brakes or full ABS? Does it have OD trans, and is OD ok? Is there a code for no speed sensor signal? Thank-you.[/Quote. It has a magnetic sensor, just rwal and it had a p0500 code, od seems to be fine.
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Friday, October 23rd, 2009 AT 10:21 PM
Tiny
CH112063
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Hello coffey38, you can always call me Joe.
Your quite welcome. Now, your differential sensor tells the comm. Bus(wires) rear wheel speed info, for RWAL. The output sensor is rear transmission output shaft speed. Their are other items, a speed or distance sensor is used, and an input sensor is also used on newer. It depends on State of Manufacture and model system. The computers on the comm. Take the trans. Sensor information and decided speedometer information and sends signal to dash. The speed sensor is more reliable but driven by a plastic gear. If the trans is turning(output shaft) and the speed sensor is not(plastic gear not positioned or stripped) you won't get any speedometer action from the computer you accessded for information. Others just used input sensor and output sensor on transmission for this information, along with the crank and cam sensors, it all depends on your model and year and emission requirements. So if the wiring and sensor drives are ok then the speedo itself, or the computer that feeds this info. From bus line comm. Info is dead(very unlikely but possible. Two feet away is a 98 318 rwal, with OD, 4th speed. It uses the speed sensor and PCM(engine controller) for speedo. In this model the crank sensor and speed sensor info. Must speak, and the bus comm. Must hear and do, or no speedo, and no 4th speed in transmission. Since your trans shifts fine(no overdrive?) It may be the computer that drives the speedo. The truck outside my window its the PCM, or the Speedometer in your inst. Panel(cluster). I hope you understand me, I am lousy at using a keyboard and have worked on my own for so long(Chryslers computer is so slow) that I never had time or needs for keyboard use other then games and reprogramming and data lookup. So you were kind enough to answer me(except my truck I'm working on has OD) except You didn't mention OD. So I assume you don't have it, or it is ok.
The reluctors(or gears) drive magnetic sensors(so to speak) and the plastic gear drives most speed sensors. And you have a continuing speed sensor code. After you reset the computer, (correct?).
Scan BCM scan PCM if both have no speedo signal see if the sensor(OUTPUT) is got proper voltage and ref, ground. Then if wiring at PCM is good, thats how we decide if computers are good, then behind cluster(eliminate wiring) then in the case of all good we replace speedo.
If you have meter and send schematic, I'll help. In the 98 it was slightly easier. All info available on this site(shematics) I have read.
In 2000 the Body control computer(BCM) came in more and more as the speedometer control. So the scanner is important. Also.
If I helped you great. I must deliver 98 now, ok later. Chrysler pays 0 for testing and 12 minutes for replacing. So you see why no techs. Anymore with Chrysler products(Dodge, Jeep, Mitsu.). Some dealers support their techs, no more around here.
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Saturday, October 24th, 2009 AT 11:26 AM
Tiny
COFFEY38
  • MEMBER
I have found a broken wire at the connection on the front control arm, repaired and road test, all is well now, thank you for any help
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Monday, October 26th, 2009 AT 7:35 AM
Tiny
CH112063
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Good, glad its over with. Welcome.
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Monday, October 26th, 2009 AT 10:44 AM

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