limp mod?

[windsor318is]

well, i drove the car yesterday and it ran perfect as usual. today i start it, and it has about 120hp, and has a vibrating feeling when i step on it. its definetly a sensor thats gone i just dont knoe which one. i checked all the coils already and its firing fine, i doubt even bad gas would do this. anyone have any ideas? whats a car feel like when the o2 is gone, thats what im thinking right now.
any suggesttins will help thanks!

[jakeb]

hows the fuel filter? I had an s14 that acted how you say....it was just the fuel filter.

[e30polak]

Take it somewhere to be scanned. An o2 definitely wouldn't cause that.

[surebimmer]

i doubt even bad gas would do this.

So you know you have bad gas?

[jogfrogjog]

could be a million things... your best bet is to get it scanned and see what codes it throws. I had an issue where my m50 wouldn't go above 4k rpms, the car was going into limp home mode b/c it wasn't seeing the speed sensor, so I just had to connect a wire to the dash and it took care of it... check your codes, it'll save you tons of time and headache... O2 won't do that, I have mine completely disconnected, with it disconnected, I believe the computer runs closed loop, with it connected, it'll switche between closed and open loop based on throttle position. Also check for vacuum leaks, you can use carb cleaner or the like to test for it with the car running, just spray around the intake and it will likely bog down b/c of it being a rich mix if the cleaner is making it in through a leak between the MAF and throttle body.

[windsor318is]

the wireless scan at the dealer showed maf and o2, i switched both today and nothing at all same shit, i might have to try your suggestion with the carb cleaner tghe problem is this started one morning doesnt make sense, im going back to the dealer tomorrow to bitch them out.
im going to try switching to the stock chip, maybe my chip is fryed