i have a 00 300m and my check engine light came on so i had autozone check it and the said that my TCM is going out and, so i went to the junk yard and pulled one from a 99 intrepid but my car has an auto shifter and the car i pulled dosent, so i found a 05 intrepid with an auto shifter i was told that the intrepid parts were compatible with my 300m how do i know if one of the TCMs i pulled will work for my car

 

your first mistake is to rely on on a parts supply place to tell u whats wrong with your car do u go to a food mart for medical help or do u go to a DR that is trained in this situation.
What were the codes from the check engine light?

 

The codes were: P0700, P0731, P0720, P0118

 

This is PRICELESS.......WE techs Bust our ***** all day long to figure stuff out and we ae called thieves at least 3 times a day........But some monkey with a universal code scanner has you running around town buying unnecessary parts , because he has NO CLUE.....

Gotta Love It.....

Now..... First things first...2005??? Intrepid doesnt exist ...so thats out.....

731 is a Gear ratio error, followed by 720 which is an Output speed Sensor CKT failure.

Think........If output speed is Invalid...How does a trans controller pick the correct ratio???? Fix the 720, and 731 will probably go away all by himself.
118 is a coolant sensor code....Simple enough to check....It indicates an Open CKT....so if the wires arent broken, and PCM isnt fried....The sensor is bad. The easiest way to do this...is to unplug the coolant sensor, and short the terminals with a paper clip....If the code goes to 117, or shorted...you have found your problem.

TAKE THE TCM's BACK.....If they let you....and spend that cash to have someone COMPETENT look at your car!!!

 

Nicely stated, Djinn-n-Tonic.

 

Ok ill start with changing the speed sensors now my next question is where the heck are they? can someone post a picture of their location

 

NO YOU WONT!!!!!!!

You will start with checking the wiring between TCM and trans.....


Location

TCM PIN OUT


Measure resistance between pins 13 and 14 of TCM connector... and Post back.