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Getting a code 43 only when going up a hill...

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    #1

    Getting a code 43 only when going up a hill...

    I bought a stock 93 ex wagon with 120K miles. Everything cool for the most part (except a little more engine shake at idle than I would like) but I live on a hill and everytime I do the 5 mile drive up (1400ft elevation) the engine light comes on. It gives me a code 43, ie fuel system. No noticeable difference in performance however.

    The next time I use the car, the light is back to off. And it will stay so as long as I am driving on the flatland, only to come back after I go up a long hill.

    From what I read about code 43 it could be a lot of little things so I figured I would ask here if anyone has run into this case where it only appears after climbing...

    Thank you for any help

    Bo
    Tags: None
    #2
    Maybe it's throwing it because the fuel sending unit is getting a false reading from going up hill. Thats my guess i'm sure there will be more.

    86 4Runner - 22RE 5spd, 4" Lift, 35x12.5R15 BFG Km2's, 4.10 gears
    "The Turtle"
    DD/Trail Rig/Mud Bug

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      #3
      Don't know about the code 43 but as far as a rough idle...

      Honda tends to place the steering rack and the rear motor mount on the same subframe. Engine vibrations are sent right up the steering column. Of course this only applies to auto tranny cars. If you think the Accord is bad you should drive my 88 Prelude SI. Hondas seem to take a Loooong time to COMPLETELY warm up. Both the 93 Accord Wagon and the Prelude take at least 1/2 hour of driving before they idle decently. At long traffic lights I will put my left foot on the brake and raise the idle up to 1,000 rpms with my right foot.

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        #4
        That's what I was gonna say. When your going up a hill, the fuel sending unit might be thrown off with the fuel being pushed to the back of the tank. Perhaps the unit is going bad?

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