yeah so i'm on my way to work yesterday and i'm just crusing and all of a sudden i decided to get on it a lil bit and i just stomp on the gas didnt down shift. and it feels like i doing nothing...it sounds like the engine wants to rev high but it doesnt. then after this happened a couple times the engine light came on and i check it out and its code 43 which is fuel system. my question is where do i check and has anyone else had this problem?
oh yeah its a 94 ls (stock motor)

 

I have a diagnostic chart for code 43, if you got a fax # I can send it on over. It gives you a step by step procedure to check code 43.

The description given is
Code 43: A problem in the heater oxygen sensor (HO2S) circuit, or a problem in the fuel supply system.

Let me know.
Nate

 

43 is the fuel supply system code, not o2 heater. you might have a relay going bad or fuel pump starting to die and you're losing fuel pressure..

 

703-716-3032 fax #

 

my car has flashed this code before when i get under an 1/8th of a tank, thats the only time, i fill the tank up and it goes away, kinda weird.....

 

your fax machine is not answering.....

 

the problem is being worked on as we speak

 

try it now

 

being sent now...

 

A faulty heated O2 sensor will give you that code.

After I did my (B18C1) swap into my Civic hatchback, I got the same CEL code of 43. I changed out my oxygen sensor and the code went away.