transmission speed sensor

ANSWER : Hi There,
As you know, there are two speed sensors. One is an input speed sensor and one is an output speed sensor. These are both very different in terms of their location. The input speed sensor (which is what I believe you are referring to) is located inside the transmission under the side cover and requires the transmission side cover to come off in order to access. This is a fairly labor intensive job and usually requires about 4-5 hours to complete. In order to remove the side cover, the transmission will need to be tilted down slightly which requires the sub frame to also be tilted down. I would suggest having a professional from YourMechanic come to your location to assist with this job should you need any additional help.

ANSWER : Hello there, a few possible faults could cause the vehicle to become stuck in first. The most common would be low fluid level, shift solenoid, transmission range sensor, or a transmission mechanical fault. I’d suggest getting this looked at by a qualified technician, such as one from YourMechanic, who will be able to diagnose your shifting issue and perform any repairs required.

ANSWER : A faulty transmission range selector switch/sensor could have some negative effects on vehicle performance and consequently the switch should be replaced prior to a diagnostic for the acceleration problem you are describing. After the sensor/switch is replaced, if the acceleration problem remains, that problem would be identified and resolved during a slow acceleration diagnostic. To obtain replacement of the range selector component, please use YourMechanic’s transmission range selector service page and the responding certified mechanic will get this taken care of for you. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.

ANSWER : Hello. It does not appear that a 2.4 Land Rover engine requires a reset procedure for the crank position sensor. Most crank position sensors are hall effect or magnetic type, and operate by reading a signal from the reluctor wheel that is close in proximity. If the engine is not firing after a new bracket has been attached, it may be possible that the new bracket is not properly positioning the crank sensor and throwing off the reading. I would double check to make sure that the new bracket positions the crank sensor in the same position as the old one. If the bracket is okay, it may be possible that there is a wiring issue or the sensor is faulty.

ANSWER : Hi there. O2 sensor low voltage can be caused my a number of things. Mass air flow sensor was only one of them. It can be a bad O2 sensor, coolant temperature sensor, or wiring issue.

What should be done is a proper diagnosis for the Check Engine Light. Using a complete scanner rather than just a code reader gives a technician the opportunity to not only read trouble codes, but to read voltages for individual sensors. While a code reader tells you the relevant system that set the Check Engine Light on, but with a number of possible causes, the full scan tool allows checking of each individual cause. Having a proper diagnosis will help you have this repaired correctly without replacing parts that are not faulty.

ANSWER : What you’re describing seems more like a problem with the speedometer cable and housing. The cable that attaches to the sensor and then to the speedometer in the dash has multiple opportunities to become damaged. The first thing I’d do is check the connections on both sides, from the speedometer and the sensor. If the issue continues, replace the cable and housing, as that’s probably what’s causing the speedometer problem on your 98 Toyota Avalon.

If you need help getting this fixed, consider contacting a certified mechanic who can diagnose your speedometer problem and confirm my suspicions. The mechanic can then make the necessary repairs to your vehicle once this is done.

ANSWER : Hi there. The code P0500 is in reference with the vehicle speed sensor. The possible causes that contribute for this code to appear are:

The vehicle speed sensor (VSS) is not reading properly
There is a broken or frayed wire going to the vehicle speed sensor
The vehicle’s ECM (computer) is not correctly configured for the actual tire size on the vehicle

If you need to replace the VSS, then check to see if there is any mounting bolt and remove the bolt before taking off the sensor. The sensor will have some pressure on it but not a hole lot. You may have to put a pry bar on the sensor and pop it out. Make sure that you have a drip pan under the sensor as it will drain out some fluid. Top off the transmission fluid when you have the new sensor installed. If you need further assistance with the P0500 code, then seek out a professional, such as one from Your Mechanic, to help you.

ANSWER : Hi there. It is possible that your issue is caused by a faulty speed sensor or just an obstruction of transmission fluid that needs to be flushed. It’s probably a good idea to have a professional mechanic come to your location and complete a car is hard to shift inspection so they can determine what is causing this problem and recommend the right repairs.