2002 Elantra Fuel Injector

Discussion in 'Hyundai Elantra / Lantra' started by paul, Jun 10, 2008.

  1. paul

    paul Guest

    The wife's car developed a very rough idle and when driving the car it
    lacked power and would barely keep running. The check engine light came on
    and I scanned the vehicle for any DTCs.

    I don't recall the code but it stated the problem was fuel injector #1
    "short to ground".

    I have not removed the engine cover yet. Are there any markings to show
    which injector is #1?

    Are special tools required to remove the fuel line?

    I have changed injectors on my Mustang V8 and I required special fuel line
    removal tools to separate the fuel rail from the fuel line.

    Thanks for any assistance.
     
    paul, Jun 10, 2008
    #1
  2. paul

    zonie Guest

    Number 1 cylinder would be the first cylinder from front of engine. O
    cylinder closest to the engine drive belt.
    Scot
     
    zonie, Jun 10, 2008
    #2
  3. paul

    hyundaitech Guest

    Don't jump the gun to replacing the injector. Grab an ohmmeter and chec
    the resistance. It's more likely the connector is unplugged or there's
    wiring problem than there's an actual electrical problem with th
    injector.

    Rodents love wiring.

    As for the work of replacing the injector, you won't need any specia
    tools
     
    hyundaitech, Jun 10, 2008
    #3
  4. paul

    paul Guest

    Thanks for the replies.

    I checked the resistance on #1 and it was within the specification given on
    the Hyundai Service website. I unplugged #2 just to see what it's resistance
    was and it was the same as #1.

    With the engine running, I unplugged #1 and the rocky, shaking idle did not
    get worse but when #2 was unplugged while running, the idle was far worse.

    Called the Hyundai Dealer parts dept. and he said there were 2 different
    injectors for that year, one was around $80 and the other $135. The higher
    cost was if the vehicle had California emissions. He needed the VIN number
    to determine which injector was required. Neither injector was in stock and
    would have to be ordered by the dealer.

    With the engine off but key on, the injector harness on #1 had around 12
    volts. I could not find what the correct voltage was on the Hyundai Service
    website.

    Don't really know what to do at this stage. Idle is very rough with light
    colored smoke coming from the tailpipe.
     
    paul, Jun 10, 2008
    #4
  5. paul

    paul Guest

    Should have added the DTCs I pulled this morning.

    P0261 Fuel Injector #1 (N30) Short to Ground

    P0301 Cylinder #1 Misfire
     
    paul, Jun 10, 2008
    #5
  6. paul

    hyundaitech Guest

    Okay. You've pretty much verified the power wire to the injector (batter
    voltage with key on) and the injector itself (via resistance). Since thi
    is a problem with the injector circuit, the potential problems you hav
    left are the wire from the injector to the ECM and the ECM itself. I'
    pretty much banking at this point that the wire between the injector an
    ECM is either broken or rubbed through onto the engine/trans/chassi
    somewhere.

    *Do not buy an injector. You've already verified the resistance.
     
    hyundaitech, Jun 11, 2008
    #6
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