98 idling and braking rough??

i got a 98 contour 4 cylinder and when i'm in drive and on the brake its like the car wants to jump forward.. when braking its like it brakes then jumps then brakes. if i'm stopped in nuetral the car dosnt do it it idles fine.. any suggestions?

possibly an o2 sensor, when is the last time you changed the fuel filter?

02 sensor was already changed? could it have been done wrong or bad? havnt changed the fuel filter since i've had the vehicle

there are 2 o2 sensors, 1 before the cat and 1 after. most of the time its the one before the cat that goes bad 1st. how many miles are on the car?

there are 100,320 miles on the car.. that problem seemed to have stopped but now when breaking sometimes more when the wheel is turned there is vibration on the pedal.. also the other day it was leaking and burning oil.. but now it seems like if it is leaking its slow and its odd any suggestions ?

a vibration could mean you need new brake pads and or to turn the rotors. if your not 100% sure the motor is leaking oil, buy some engine degreaser at auto zone or somewhere and clean your motor really good. let it idle for a while and see if you see a leak.

the vibration i'm almost positive is not rotors or pads because its not consistant and i just got an oil change and drove home and when i parked the car it smelled like burning rubber..not burning oil..

the vibration i'm almost positive is not rotors or pads because its not consistant and i just got an oil change and drove home and when i parked the car it smelled like burning rubber..not burning oil..

i suggest putting the car on a lift, or take it to a mechanic to look at......if it smells like burning rubber and you feel vibration when you turn the wheel, your tires might be rubbing in the fenderwell.......

the vibration isnt the wheels hitting the fenderwell.. its only while braking and not always when turning the wheels if it starts to do it when i brake and i let go it stops and if i'm hitting the brakes lightly u can hear and feel the vibration about to come

its leaking oil or something rite in front of where the ac water comes out..

the vibration isnt the wheels hitting the fenderwell.. its only while braking and not always when turning the wheels if it starts to do it when i brake and i let go it stops and if i'm hitting the brakes lightly u can hear and feel the vibration about to come

this wont have anything to do with a burnt rubber smell, take it to a mechanic

Appears to have a leak in the brake or power steering assembly. Could have fluid leaking onto the exhaust. Brake pads could be worn excessively. There are too many things this could come from to elaborate. Take it to the shop and have a pro give you some answers.