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CEL decoding?

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    #1

    CEL decoding?

    My car starts rough once in a while usually the first start of the day. During this period I usually get a CEL when starting up my car. It takes a few seconds to start then fires. I have also been getting bad gas mileage.Around 200 or less to a tank, all city driving.
    I have decided to check the codes and this is what I got.
    four quick flickers, pause, then eight instant flickers. Which I understand as - "48 LAF - lean air fuel sensor"
    -Then after a longer pause I get a single long pause followed by 6 quick flashes. This I understand as "16 Fuel injectors"

    So what does all this break down to? The car runs fine, just gets bad gas mileage. What needs changing or fixing?
    -Thanks JTM

    *BTW: It's a 91' Accord Lx stock with 97k, oil change not to long ago, new air filter and new wiring/plugs.
    Tags: None
    #2
    stop buying shit gas bro.
    miss my turbo cb7
    moved onto volvos. dont know how that happened, just did

    Comment

      #3
      Try a new fuel filter. Try some 93 gas for the hell of it.
      wat?

      Comment

        #4
        the quality of the gas isn't the issue. our cars are designed for "shit gas", so that's poor advice. 93 won't do anything to fix the problem.

        If you're getting a fuel injector code and poor mileage, you have a fuel injector problem. Coupled with the "lean air fuel sensor" issue, that means you're not getting enough fuel. That can do some major damage to your engine! Do you ever hear a pinging sound while driving? Like popcorn in a tin can?


        Look into changing those injectors. If you go to a junkyard, you can probably pocket them and they'll never know! Your oxygen sensor may have a problem as well (though if it's reading lean, then it should be working.)






        Comment

          #5
          Flow test your injectors.

          Comment

            #6
            Originally posted by deevergote
            the quality of the gas isn't the issue. our cars are designed for "shit gas", so that's poor advice. 93 won't do anything to fix the problem.
            Thats not what I meant. He could be getting bad gas. Unlikely but it could.
            wat?

            Comment

              #7
              quickangel93 made the "shit gas" comment. Still, 93 octane isn't going to fix a fuel injector issue, or a lean condition.






              Comment

                #8
                Originally posted by deevergote
                quickangel93 made the "shit gas" comment. Still, 93 octane isn't going to fix a fuel injector issue, or a lean condition.
                mike i ran my car on turkey hill gas and a cell came on. if the stuff they mix that makes it go lean or rich. but i could be wrong.
                miss my turbo cb7
                moved onto volvos. dont know how that happened, just did

                Comment

                  #9
                  If the gas has sediment in it, which IS possible, then yeah... I suppose so. That would clog an injector, causing a lean condition. If that's the case, you're right... but that won't fix the problem (it would prevent it in the future, though...)






                  Comment

                    #10
                    Originally posted by deevergote
                    If the gas has sediment in it, which IS possible, then yeah... I suppose so. That would clog an injector, causing a lean condition. If that's the case, you're right... but that won't fix the problem (it would prevent it in the future, though...)

                    maybe some fuel injector cleaner, or i could be a clogged fuel filter. ya know you supposed to change it like every 7-10k.
                    miss my turbo cb7
                    moved onto volvos. dont know how that happened, just did

                    Comment

                      #11
                      I have a fuel filter sitting in the opening to my basement... I've never changed mine. I think mine is original.

                      But yes, they're cheap... and not hard to do. It's smart to change it regularly.






                      Comment

                        #12
                        Originally posted by deevergote
                        I have a fuel filter sitting in the opening to my basement... I've never changed mine. I think mine is original.

                        But yes, they're cheap... and not hard to do. It's smart to change it regularly.
                        Yeah, whats my excuse? I owned my car for 120k miles and never changed my fuel filter until last month, and I work at Honda!! I know, I suck, but its fresh now. I never got that poor of mileage per tank. I usually get 300-330 using 93 octane from QT religiously.
                        1992 Accord EX 4dr 5spd - SOLD after just over a decade of ownership
                        2000 Subaru Legacy GT wagon 5spd
                        AHM Platinum Parts Counterperson

                        Comment

                          #13
                          Are cars engines won't use the higher octane to an advantage so why would I burn a higher octane gas? I'm going to probably do the fuel filter. Is it possible it could be the distributor etc? And the engine runs and sounds fine. I've ran fuel injector cleaner and nothing changed. I've used it twice for two weeks. So I'm not sure. Should I just change the fuel filter and then go from there? And also would my check engine light come on only some of the time like it does if it was an injector problem? Seeing as the CEL only comes on when it starts hard/rough. (just taking longer and making some loud noise like a screeching belt or something). Watch the video

                          This shows me starting the car, Yes I know there is a slight valve tick, but that's because it's cold out. I start the car, then turn it off, then repeat. Listen for the loud scraping kind of noise. ( It seems really loud the idle, but that was just the video camera we used, I have normal idle).

                          So tell me what you think?

                          Comment

                            #14
                            Originally posted by jhnyct
                            Yeah, whats my excuse? I owned my car for 120k miles and never changed my fuel filter until last month, and I work at Honda!! I know, I suck, but its fresh now. I never got that poor of mileage per tank. I usually get 300-330 using 93 octane from QT religiously.
                            I've owned my car for 7 years, I treasure it, and I own this site... But so many stupid things get neglected because of laziness!

                            93 octane doesn't really matter... though 330 for 3/4 of a tank is damn good! I get about 400 to a tank. I've gotten near 500 ONCE... but that was all moderate-speed highway and a very light foot (my usual 28-32 is with a bit of a heavy foot... bolt-on mods on an H22, tuned by MRX)






                            Comment

                              #15
                              do you guys think it could be my dizzy cap or rotors?

                              Comment

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