motor is goin whacko

[97CuttySupSL]

so i junmped in my car to go out on break today at work..started it up..somehting seemed diffrent..the motor was vibrating pretty bad..i didnt notice it till i put it in reverse to back out then the car started to vibrate more heavinly... so i turn the car off check everything..service engine light soon light is flashing..so i dunno what is wrong..tune up probbly needed..i was told i ahve a bad o2 sensor..possibly air to fuel mixture is off and making the enige run rough??u guys tell me

[chadz34]

I would do a tune-up. I found that out. Tune-up's do miracles. Sounds like it could be an O2 as well.

[97CuttySupSL]

ya probbly gonna bring up by my dads work..he works for gm..so im probbly gonna get a tune up done for free..and im gonna have the guy run the computer and see what i get

[Euro]

02 sounds about right...my buddy's 91 GP had that same problem, and his 02 was fried

[97CuttySupSL]

ya im gonna run a comp and see..probbly a good tune wup will do good to

[cryptnix]

check injectors too? does the idle sound lopey? just try tapping on all of the injectors

[joey b]

flashing SES light means cylinder misfire. That would also cause vibration.

[19Cutlass94]

Id check the coils. A bad plug although would cause vibration, it wouldnt set a SES light.

[97CuttySupSL]

so ya it hink it was just bad fuel..probbly picked up some bad gas and did not mix right..this morning woke up throw a bottle of heet in and 10 bucks worth of gas and it seemed to do the trick..probbly still gonna go in for a tune up tho