this just started when it happens the car goes into limp mode. i can shut the car off and back on and drive just fine. i have a code reader and clear the code but is comes back after 1 or 2 days no reason that i can find.

i replaced the TCM and it still does it
the tranny shift just fine, i seems to be a loose wire or a bad connection because it happens so randomly.

there is a sensor or something on the case right hand side with two wire that go to it the last time it happend i dissconnected and reconnected that conector and it let me clear the code and did not come back for a week.

what is that sensor or whatever.
any help would be great
thanks
Truck

 

what you really need to do is use a real scanner to check out transmission information. the p series engine codes don't lead to accurate diagnosis of transmission problems. you can toss all the parts at it but really never diagnose the problem. sometimes you can get lucky and fix it that way but more often than not, you end up po'd, frustrated and broke.

 

When it acts up does the speedo work ?
There are 2 sensors input and output speed sensors either can cause limp mode output= no speedo reading

 

the speedo works all the time.
it seems to do it when it is hot outside.
i cant reset the code until the car cools down.
maybe the solinod pack?
are those easy to change?

thank you

 

input speed sensor is a hall effect device and they do seem to be heat sensitive.
takes 10/15 minutes to change

 

the transmission did not change when you start the car, but if you turn it off and the turn it on again, the transmission work good, but later the problem come back, the scanner says that LOW-REVERSE SOLENOID, if i change it the solenoid, the problem its going to be fix it???
thank you guys
David - Puerto Rico

 

after i replaced the solonoid the car ran great untill yesterday it threw the code agian and went back into limp.. it is 1 degree outside so has nothing to do with heat this time.
i reset the code with the code reader but came back today after driving 3 miles??

 

the problem ended up being a stupid relay on the firewall it was worn out, have not had any problems since.