well ever since i had my new exhaust installed my carb or injectors are being *^*ed up . let me explain. when i start my car, sometimes it dies then i got to start it agian....ok once i got it started it seams to runs normal , but it kinda studders and vibrates till it warms up. ok now i put it in drive and wooooooom it bogs all down, i step on gas more and it almost dies, then it fianlly starts to go but its all like....well it acts like it has no gas, like when ur car is dieing from no gas, that what my car acts like. just started doing this. i cant figure it out. iput gas i there , still does the same thing.my check engine light comes on sometimes. also i may add that when i tep on the gas, it smells like something burning. PLEASE HELP!

 

Carburetor or TBI?

Check for codes if the check engine light came on and post them here.

 

tbi, how do i find wut code number is it....i dnt get where to look for the troble code

 

Thirdgen tech articles/thirdgen f-body FAQ/miscellaneous info

It's a little difficult to find, try:

https://www.thirdgen.org/newdesign/faq/thirdgen.shtml

 

Sounds like they fried your O2 sensor or ECM when welding the exhaust on. They just managed to try to put 200 amps of current through a circuit designed for milivolts. I always unplug my O2 sensor before handing the keys over to an exhaust shop on any car with an O2.

 

are you sure it's exhaust related. sounds like a dying fuel pump to me. Could just be bad timing and have nothing to do with the exhaust. G/l with it either way.

 

yes i think im going to go with your bet, just one question, where is the o2 sencor located and is it easy to take off? any certain things i shoudl know about removeing them,,,alogn with the ecm senor as , well, thx a bunth

 

how woudl i test your theroy....i do have to pump the pedal to get enough gas to make eth car try and move. if i dont punp it, or i push it down too long, it dies. Thx a ton for the help

 

If the O2 is gone then you should be able to disconnect it and run in open loop, it should also run in open loop until warmed up, which I don't think it's doing.

First step it to pull your codes and see what they tell us.

 

Passed over the "fried ECM" thing, could be a possibility. Sorry bout that 355.

Still need to check for codes though.

 

Thats a slim possibility, but it can kill an O2 sensor very easily.

It could just as easily be the fuel pump. But it is strange coincidence that it happened when you put your exhaust on.

 

let me add, after teh exhuast change it slowly started gettign worse and worse with the gas, more so if teh car is cold, but for teh past few weeks, even when its warmed up, still has that "out of gass" feel, just now its so bad i cant even drive it

 

---44---. Oxygen sensor lean


----32----. Fault in barometric pressure sensor circuit OR
Fault in exhaust gas recirculation valve diagnostic switch OR
Fault in electronic vacuum regulator valve

---23----. Low temperature at manifold air temperature sensor OR
Throttle position sensor error

 

You would check the fuel pressure. Throughout the range i think like 10-15psi is normal. Go to the auto store and by you a fuel pressure tester they are fairly cheap.

Although with the codes i just saw this may not at all be your problem (good to know). Some people have had luck with doing a intank fuel pump swap but, they musta got lucky because, nothing this big has ever came together as well for me lol. Theres always at least 1 rusted strap or 1 bolt that won't come out in need of persuasion (bigger hammer hehe). Anyways g/l.