At Fixya.com, our trusted experts are meticulously vetted and possess extensive experience in their respective fields. Backed by a community of knowledgeable professionals, our platform ensures that the solutions provided are thoroughly researched and validated.
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
I would suspect the VSS - vehicle speed sensor is going bad . The C.C. to work needs a speed input an the shift points are also speed related ,plus some other thing's . To know for sure a qualified tech should hook of a factory or some other type professional scantool that can view sensor data parameters ,while driving the vehicle . Not auto zone scan .
could PCM be problem ???? sure , so could a lot of other thing's ! You know how to test electrical circuits using a wiring diagram an a DVOM - digital volt ohm meter ? How to test shift solenoids ? How to test power an ground at the PCM - engine computer ? You don't want to just replace the PCM , needs to be programmed . Dealer . Not having it done will cause more problems then you have now > NO transmission shift solenoid DTC'S - diagnostic trouble codes ? Transmission mechanical problem .
Your best bet , take it to a qualified repair shop.
run the fault but all you describe is operated from the VSS sensor ( vehicle speed sensor)
it tells the cruise control the vehicle speed , tells the TCM the vehicle speed so that ratios can be changed, activates the speedo,and will report with a check engine light to report a transmission problem
run the fault codes first
Check for codes, may have a bad speed sensor either input(turbine) or output (vehicle) speed sensor. They are a common problem with the Chrysler transmission.
Your car is equipped with a speed sensor. When this sensor goes out it will cause the vehicle to run erratically and shift up and own at all the incorrect speeds and RPM's. Have your speed sensor checked. I'm sure that is the problem.
This is likely your electronic speed sensor. On my 2003 F150 it would rev quite high before finally shifting into 2nd. and my O.D light would blink also. The speed sensor is located under the vehicle about halfway back on the frame on the passenger side. The part costs about $70 and is a fairly easy repair.
Sounds like either an input or an output shaft speed sensor. In a nut shell, the transmission's shifting is controlled electronically; at a stop or very slow speed, the transmission is automatically in first gear...when these sensors 'sense' that the vehicle is travelling at a certain speed, it tells the transmission to shift into second. At the next specified speed, it shifts into third; etc. etc. What it sounds like is that one of these sensors is going bad, telling the transmission to downshift, but the other sensor is fighting that command and causing the vehicle to 'act' like it's running rough, when in reality it's probably just the transmission rapidly jumping between gears. These sensors aren't particularly cheap, but are pretty easy to replace. Start by finding a shop that will plug in a code reader for you (or do it yourself if you have one). You're looking for a code in the range of 0715 to 0723. If it reads 0715 to 0718, that's the input side. 0720 to 0723 is the output side. Good luck.
×