My Integra is throwing a 43 code which is "fuel supply". Seems to be running fine, but has been using a little more fuel then normal.

Any idea's?

 

try the o2 sensor

 

Haha my latest car purchase, a '94 LS, is throwing the same code.

It only seems to come on when the car is cold and I use anything other than minimal throttle. I can shut the key off and restart the car within less than a minute and it goes out.

In other threads I've read 02 sensor, fuel pressure regulator and fuel pump if yours is aging. I code chart also says something about a vacum leak. Someone mentions the filter as well if it was never changed.

My car isn't getting the greatest mileage but it OK. I have the 02 sensor and will change it shortly. I'm gonna check the FP and will change the filter and possibly the pump. I might have a pressure regulator from another car to use.

 

Sounds to me like the air temp sensor. Its pretty cheap and real easy to replace.