Question about 2004 Honda Odyssey

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Malfunctioning speedometer hi to all... can anyone knew what are the main cause of the malfunctioning of my cars speedometer? some of its parts are always blinking during the time im using my car... what would i will do?

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The odometer circuit drive and the speedometer are controlled by the CPU built-in the gauge assembly. The CPU receives pulses from the PCM. The pulse rate increases as the car accelerates. The frequency and duration of these input pulses are measured by the CPU.

Posted on Aug 06, 2008

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My speedometer goes up and down , and my radio goes on and off


The speedometer can fluctuate rapidly under normal driving conditions when the car's speed changes abruptly, but sometimes the needle can start swinging around the dial without any fluctuation in speed. If the hairspring comes loose or breaks, it can't hold the speed cup in place, and the result is a fluctuation in the dial. In electrical speedometers, if the circuit that counts the magnetic pulses fails, it can cause the speedometer read-out to vary from the actual speed and to shoot upward or downward without notice. If a speed sensor in the automatic transmission starts to malfunction, it can affect the speedometer and cause fluctuations. In these instances, either the speedometer or the sensor needs replacement.

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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.

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The a/c is blowing hot i checked the r134 and it is fine what could be the problem and how much money it will cost to fix


That is a real good question. However, NOBODY online can answer that question for you. There are many things that can cause your A/C system to blow hot air - even if the freon level is correct. It could be anything from a bad A/C clutch to a blend-air door actuator malfunctioning, to a low or high presuure switch alfunction, or even a cabin air or evaporator temerature sensor.

Your A/C system will have to be diagnosed before anyone can tell you for sure what is causing the problem. Even if I knew EXACTLY what was wrong and knew EXACTLY what parts (if any) are needed to be replaced, I still could not tell you how much it is going to cost for you to fix it. This is because a lot depends on where you live, how much parts cost in your area, what are the labor rates in your area, and WHO is going to do the job> Is it going to be done professionally? Is it going to be done by a new car dealer? Is it going to be done by an aftermarket shop? Are you going to do the job yourself? etc, etc. etc.

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Hi,
The malfunction of your speedometer might be cause by the speed sensor in the transmission. It might have been disconnected or needs replacement.
You must check that first to your mechanic, before pulling out the meter itself!

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1 Answer

Speedometer drops to zero while moving and then


The Vehicle Speed Sensor located on the Transmission is malfunctioning or the connection is malfunctioning.
It is very easily removed and replaced.
The Vehicle Speed Sensor sends vital information for the Transmission to properly Shift. Because yours is malfunctioning, this lack of information is causing shifting problems.
I do not know if you have a Mechanical or Electrical (Gauges or Digital) Instrument Display. I also do not know if you have a 17 or 19 bolt transmission pan, nor what type of transmission you have (AX4N or AX4S) Nor if you have a Speedometer Cable (Mechanical Instrument will have Gauges=Cable).
The best thing to do is to check the connections of the Vehicle Speed Sensor. Unplug and check both sides of the connection for corrosion/oxidation. You can also take this sensor out of the transmission and clean the interior end; reinstall and recheck operation.
If this does not fix the problem, then remove and replace this snsor.
Take the Sensor with you to the auto parts store to compare the part you receive. You should know what tansmission you have and the number of bolts on the transmission pan, and whether you have an Electronic (Digital) Instrument Panel or Mechanical (Gauges) Instrument Panel on your dash.
Let me know if this helped, or if you have additional information or questions. Feel free to contact me at FixYa.com!

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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.
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My speedometer keeps jumpin to zero then it will come back to normal then it will do it again and sometimes stay on zero for a long time until service engine light comes on


The mechanic should check the speedometer because of it is malfunctioning .And also the speedometer cable . If the speedometer is worn out or destroyed then replace it but if malfunctioning and can be repaired then repair it.The speedometer cable if it is disconnected then reconnect it but if cut or destroyed replace it.The service engine light will light on because of there is a problem in the service part of the engine.

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1 Answer

2000 catera frequent speedometer not working


Hi, in ure case the abs ecu is obviously a main ecu. it sounds like you have a can communication problem where your system detects hi speed can malfunction, or interferance, measure your end of line resistance=120ohms and network nominal value should be 60ohms voltages between can hi and low should ad up to 5v , or to ground eg. can hi=2.7v then can low should measure 2.3v. if either one of these measurements dont add up you know which cercuit is at fault.

It might even be a vehicle speed /wheelspeed sensor contaminated or damaged component causing system shut down.

Jul 22, 2008 | 2000 Cadillac Catera

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