95 3.4 jercking
 

Hey yall I just replaced the o2 sensors in my car and ever sence then my car wants to stall out and jerk real bad around 55 to 60 mph unless I keep the rpms real high then it runs normal. Was I supposed to do anything extra after installing the o2's I tried my chiltons book and it didnt say much. I just know this didnt happen untill they were replaced.

could the new o2 sensors cause a coil pack or spark plugs to go bad im just not to sure were to start.

make sure the 02s plugs are getting a good connection. what brand 02s did you get. bosch 02s didn't like my lt1.

Denso

check the wires and make sure the connectors are clean and the pincher part is not bent out so as to not get a good connection. make sure wires are not against the exhaust. if you still have the old ones replace one at a time with an old one and see if anything changes. you may have a bad new sensor. not the first time its happened

fixed the problem it was a bad MAP sensor took 4 different garages to find a stupid OBD 1 scanner

with a 95 your need the right plug for the scanners. good that you found the problem. weird that it happened right when you did the 02s.

Yeah I know I thought it was a coil pack our old 3.8 did the samething when it had a bad coil pack I just had a gut feeling to have the codes pulled for some reason but its running like a champ now :icon_headbang: