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MAP sensor issues

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    #1

    MAP sensor issues

    ok so im having some trouble solving a problem on my cb. my check engine light is on. code 3. (MAP sensor.)
    i have replaced the sensor multiple times with junkyard finds. nothing seems to work. i notice the wires were taped. found the wires were cut but all have been solderd back together. still nothing. is it possible that i have an underlying issue like a bad o2 sensor or something thats causeing the map sensor to act up? i know the wiring under dash around my ecu is sorta cut up from being a turbo vtec swaped car but i didnt think this would cause issues with my map sensor. i guess thats my next step unless someone else has another idea. thanks in advanced!!
    Tags: None
    #2
    You need to ensure your ECU has an uninterupted connection with the MAP sensor. Had I found tape on the MAP sensor wires and a wiring mess around the ECU, I would have started there.

    Pull the ECU connectors and use your multimeter to make your checks, repair wiring as needed.
    1997 Honda Accord EX-V6:
    C27A4 - 2.7-liter 90º-V6 with SOHC, 24-valves, PGM-Fi
    MPZA - Electronically controlled 4-speed automatic, 1 reverse
    ~170 cu. in. / ~170 ft. lbs. / ~170 whp

    Originally posted by James Matteu
    You have to consider the results of your test in an objective manner, or as the country folk like to say, "son, you gotta be smarter than what you're workin' with."

    Comment

      #3
      ecu is correct right? like james, said...check your voltage signal at the ecu. a dirty ground would offset the signal as well and it being a MAP based car, it wouldnt like it very much.,
      I <3 G60.

      0.5mm Oversized Stainless valves and bronze guides available. Pm me please.

      Comment

        #4
        ok i think im gonna start with the ecu wiring. what makes it a mess is that it was originally an auto. that was vtec swapped then turboed. which got blown up (so i have one hell of a mess for wiring) and now i put an f22a4 with a f22a6 dble spaced manifold on. im also running the a6 ecu. so im wondering if i need the matching map sensor for the a6 ecu.

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          #5
          so you guys deffinatly think its the map sensor? cause my car runs like sh*t at low rpm. once im up over like 25-2700 range it runs like a dream.

          Comment

            #6
            most likely wiring.
            I <3 G60.

            0.5mm Oversized Stainless valves and bronze guides available. Pm me please.

            Comment

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