So I check my cel and it comes up number 43, fuel supply. What the hell do I do to fix it??? My car runs fine up top, still runs hella rich but the car won't idle, I'm assuming a crazy fuel pressure at idle. How would I check my fuel pump and what all do I need to check to fix this?!?!?!?! I realize I could hook up a fuel pressure gauge and see what it says but there maybe something else wrong, not the fuel pump, causing poor fuel pressure. Any help would be appreciated.

Oh and for those who don't know, its a 94 accord with a 2000 h22 running compete stock Accord fuel system(haven't had any fuel problems for a year now since the swap with stock fuel system).

 

not only fuel pump but may be injectors, wiring problem..did you do a swap?...i had to change some injector **** with my swap cuz the connector wouldnt fit the injectors i needed so i pulled some risky ****

 

this may sound stupid but try replacing the fuel filter, and from there just get a wiring diagram out and check for proper volatages at the connections

 

I replaced the fuel filter 3 months ago while I had the head off the motor. As far as my swap I've run this set-up for a year now with no problems(stock fuel system on my H22)

 

Sound like it may be fuel pressure related. Did you replace the fuel pump with a high pressure one ? Get a fuel pressure guage and check that. B&M makes a decent inline guage.

 

i just had that problem.. it was my O2 sensor.. maybe u wan to check it out... does it come out after a while of running... then u see ure gas go down pretty fast.. and every time u shift ure gear and u feel it run sluggish around 1000rpm - 2500rpm then suddenly it feels better after 3000rpm.. if it is.. then is most prob ure O2.. soo good luck.. its not normally ure fuel pump.. if it is.. ure car wont be able to start at all .. cause there wont be enough preassure or it cant put out enough preassure to make ure car start.. its its ure injectors then u will have a problem when u step on ure gas pedal.. evertime u floor it u wont have power at all.. hope that helps.. later

 

iwanaturbo is correct....i am also getting that code right now in my car (civic)..and it's the o2 sensor...code 43 is an o2 sensor code...mine only turns on with im driving on the freeway...but in the city it stays off...you could pick up an o2 sensor at autozone for like 60 bucks...hope this helps...