Transmission temperature sensor failure

ANSWER : The transmission temperature sensor does exactly as it sounds – it regulates the temperature of the transmission. This is an extremely important measurement of the health of your transmission as excessive heat can damage and shorten the lifespan of your transmission very quickly. Excessive heat has a very damaging effect on transmission fluid making it much less effective at doing its job. Transmission fluid provides lubrication, fluid pressure for effective shifting and helps to keep the transmission cool. When the fluid is overheated, this eliminates it’s capabilities. I would recommend having an expert from YourMechanic come to your location to take a look at your vehicle to diagnose and repair your transmission temperature sensor.

ANSWER : When you scanned the computer and got a code for the power steering pressure switch, it did not necessarily mean to simply replace the sensor to fix the code. The code you got directs you to a pinpoint test that is designed to check the power steering pressure switch circuit and system. It will narrow down the problem for you to a possible break in the wiring or connections. Also, there could be a problem with the power steering pressure, computer, or sensor. These are all possible problems for the same code which is why it needs to be diagnosed and tested to pinpoint the problem. If you need help, consider YourMechanic, as a certified technician can help perform these checks and properly diagnose the source of your Check Engine Light.

ANSWER : If the check engine light is on, what kind of codes is the system detecting? Do you have spark at the plugs? If you have spark, does spritzing some starter fluid give you a momentary startup? If so, there is a fuel issue. More symptoms and information on the car’s behavior before and after the parts you replaced would be very helpful. At this point, I would recommend an inspection from YourMechanic.com to diagnose this car starting problem, get an accurate assessment of damage and cost estimate for repairs. YourMechanic.com can dispatch a mobile, professional mechanic to your location to help you get your car up and working again.

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 : The transmission range sensor is part of the shifter assembly in the console. The transmission shaft speed sensor and control solenoids do, in fact, greatly affect shift quality. They are located internal to the transmission, requiring fluid drain, removal of the transmission fluid pan and filter, to gain access to these components.

One of our mobile technicians can assist you with the a transmission position sensor replacement to address that portion of the problem and help you diagnose your trouble codes further. Otherwise, I would recommend you take your transmission to a reputable transmission shop for the internal solenoid and control unit repairs.

ANSWER : Hi There,
This is a known issue in this generation Ford Focus and some Fiestas with the "Power Shift" transmission and there have been numerous recalls and lawsuits. Although, it is would be difficult to determine how much longer your transmission will last given the fact that you have many new parts, I would not recommend junking the car as it may still provide some valuable life left for you. I would recommend taking it to the dealer to see if these parts may be covered under the recall.

ANSWER : When you say you have three bad sensors I can only assume you have had them tested and the end result is three bad sensors. If they tested bad then they should be replaced. The power steering sensor senses the load of the steering on the engine so it can raise the idle during parking maneuvers. The O2 sensor is used for fuel control and it may effect engine power and fuel mileage. The camshaft sensor cay cause no starts, engine running problems and all three will turn on the check engine light.

ANSWER : Hi, thanks for writing in. The transmission range sensor switch must be physically aligned with the gear selector in order to work properly. This generally involves putting the shifter in the Neutral position, then adjusting alignment of the range sensor switch to the default Neutral position. If they are not aligned, the transmission controller will detect mixed signals from the range switch and the transmission internals – resulting in the P0707 you see. It is also possible that the wiring harness to the range sensor is shorted, or has a poor connection somewhere in that segment of the wiring harness. I would recommend having YourMechanic.com diagnose this issue, provide an accurate assessment of damage, and estimate the cost of repairs.