Could a bad 02 sensor affect shifting in my 1996 chrysler town & country? When I started having problems I put a scanner on it, and the only code it put out was for a oxygen sensor. Could the 02 sensor affect the electronic shift?

i have a1996 t&c had same problm,replaced,coil,cam sensor,crank sensor,wasnt it,put pcm in,saloved the problem,probly,pcm

If it starts out in 2nd gear & dosn't shift, it is probably in a limp in mode. the system will need to be diagnosed & computer satisfied. sometimes disconnecting the battery will reset the computer & allow the trans to shift untill it sees the problem again. I recomend getting the codes read first so the memory will not be erased.

you need to put a scanner on it and see what code comes up.
my guess would be the crank sensor which is very common .

we can here,
your van is going into "limp mode"
when the computer does not get a correct signal from transmission it will not shift because it doesn't know your speed or engine RPM,
Three sensors on the transmission will trip it into limp mode,
1= output sensor,
2=input sensor,
3=speed sensor,
if you have it checked and get a "P0000" type code
it will tell you which one

more like the computer or a sensor ,but need the right software to hook it up and see what fault codes are showing

I am going to assume you have the overdrive trans. This trans defualts to second gear if the trans computer detects there is a problem.

This problem can be anything from internal falure to sensors that are bad. You have to scan it for trans codes. It could be a simple input or output speed sensor. that is the easiest. however you have to start with the scan.

Most Advance and Autozone parts stores will scan for free.

Hope this helps and hope it is not internal.

HAVE SOMEONE EXTRACT THE CODE FROM THE CAR'S COMPUTER. IF THERE IS A CHECK ENGINE LIGHT ON THEN THE PCM HAS A CODE STORED ON IT. IT SOUNDS TO ME LIKE A THROTTLE POSITION SENSOR, BUT JUST CHECK THE CODE TO BE SURE. SOME OF THESE CAN ALSO HAVE A BAD IDLE AIR CONTROL VALVE. I HOPE THIS HELPS YOU TO FIND THE PROBLEM. PLEASE KEEP ME POSTED, THANKS FOR USING FIX-YA. GOOD LUCK

door ajar - probably a defective or unplugged door switch. Try pulling them, one at a time and checking the wire connections on them.

have the 02 sensors checked, they regulate the rich and lean fuel mixture signal to the computor.

i had same toublre on 96 plymouth output speed senor my wont shift out of second