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Hello,
I have a 1999 Hyundai Accent. I have replaced the transmission almost 3 years ago and I also have replaced a speed sensor last year which was causing my car not to shift over 20 miles per hour. My problem now is that the other day as I was driving on the highway it seemed like my engine is running harder and the noise was louder than usual. When I stopped at a stop sign my car almost wouldn’t go by itself if I didn’t push the gas pedal.
I feel like it slips sometimes when I shift gears or it is harder to shift. I took it to a mechanic today to get it checked and they said that they found out “Input Speed Sensor” not working which may or may not be the cause of my 4th Gear not working at all and also codes P0212 and P0234. They recommended a person that works with transmissions because they don’t.
I was wondering what is the usual price of repairing this issue and could this sensor be causing my 4th gear not to work. Also how long can I keep on driving it like that before my transmission turns bad and how serious is that issue. I am an international student here in the USA and I have no family that can drive me to school and work so I will have to keep on driving my car. I don’t live far from school or work and I have back roads that allows me to drive with 25-40 miles per hour, so I wont need to speed to much.
Thank you
Need a replacement transmission? Quality transmissions are hard to find. Free estimate to your email.Hey galyagornishka, sorry to hear about your car problems.
The transmission’s Input Speed Sensor (ISS) is also know as a Turbine Speed Sensor (TSS) and is located on the outside of the transmission’s case. It determines the rotational speed of the input shaft or torque converter and relays this information to the control unit. Using information from the ISS and the vehicle speed sensor (VSS), the control unit can make adjustments to enable the vehicle to shift smoothly and efficiently. Symptoms include improper shifting, slipping and a lit check engine light.
So from the description you provided, the input speed sensor could definitely be the issue. The cost of labor and parts to replace the sensor should be in the $100-$200 range.
Code P0212 – Injector Circuit Malfunction. There is a problem with the fuel injector. It could be due to an open or shorted harness, a faulty injector or a poor electrical connection.
Symptoms – Engine runs rough/hesitation. Check engine light is on. Engine will be harder to start. Poor power/acceleration.
Solution – Fuel injector cleaner, check the wiring, check/replace the injector. Cost to replace: $70-$80 each plus labor
Code P0234 – Turbocharger/Supercharger ‘A’ Over boost condition. The Turbo Charging system uses a Boost Pressure Sensor sends info to the PCM so it can determine how much boost is being provided. When the sensor data reads above specifications or the Knock Sensors pick up pinging/knocking, P0234 is set.
Symptoms – Engine light on. Engine knocks or pings on acceleration or hesitates or stalls. Engine lacks power since there is no boost from the turbo charger.
Causes – Transmission oil temperature is too high, engine over temperature, knock sensor (KS) failure, faulty boost pressure sensor, faulty boost sensor wiring, ignition misfire exceeds threshold.
My advice is to take your Accent to a reputable transmission shop in the area ASAP. They will be able to provide a more exact diagnosis and give you an estimate for the repairs. Driving around before getting the sensor fixed will be very hard on your transmission and you could do enough damage to require a rebuild/replacement. If the problem is more severe than the sensor or codes and the transmission has to be rebuilt or replaced, expect the cost to increase significantly.
Fair Replacement Transmission Cost by Vehicle
- Use the Year / Make / Model lookup tool to determine what transmission your vehicle has. [transtar]
- Find your transmission model in the table below for fair prices from reputable suppliers. Also fair labor cost for local installation at a local auto repair shop.
- Get a free estimate on a remanufactured transmission by email.
Fair Remanufactured Transmission Price Ranges by Transmission Model Updated May 1, 2018
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