1996 Saturn Fails NY Inspection

Discussion in 'General Motoring' started by ganjatoker, Apr 25, 2005.

  1. ganjatoker

    ganjatoker Guest

    My friend's 1996 Saturn has failed the new NY state inspection, which
    uses the car's on-board diagnostics.

    The OBDII Trouble Codes are as follows:

    P0301 Cylinder 1 Misfire Detected
    P0327 Knock Sensor 1 Circuit Low Bank 1 or Single Sensor
    P0733 Gear 3 Incorrect Ratio
    P1406 Manufacturer Specific Code

    Of course, the service engine soon light is on. He says it has been on
    for a few years.

    Any ideas?

    Thanks very much in advance
    ganjatoker, Apr 25, 2005
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  2. ganjatoker

    Oppie Guest

    Try some injector cleaner for a tank-full.
    Replace plugs, wires. Check spark intensity (if it has a distributor - cap
    and rotor)
    Anything mechanically loose will look like a knock and retard the spark. I
    had a loose A/C compressor that was triggering the knock sense. A worn
    engine mount can do this too. Listen and feel closely for anything that
    doesn't sound right. Check the torque on the knock sensor mount. This sets
    the sensitivity.

    No idea what causes the P0733 code
    obd2 codes decipher P=powertrain, next number is 0 for generic codes and 1
    for manufacturer specific codes. The shop manual should explain what code
    P1406 is. Alldata had something that referenced the EGR valve.
    96-T-31 JUN 96 Engine Controls - Revised DTC P1406 Diagnosis,
    Good idea to pull the EGR and check that it is not stuck or otherwise
    defective. A leaking EGR will cause a bad idle and possibly give your

    Check out these hits on Google
    Oppie, Apr 25, 2005
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  3. ganjatoker

    just another Guest

    They really check the trouble codes in NY?
    I wonder why he passed in previous years, then. Not to be too cynical, but here in Hawaii when
    that sort of thing happens we look for a different state inspector. ;-)
    just another, Apr 25, 2005
  4. Just started this year. Statewide, too...
    Prior years, upstate NY didn't have any emissions, downstate didn't
    ODBII check. Now, the OBDII code scan is a statewide thing.

    Repair shops upstate just LOVED having to buy the $$$$ state mandated
    code scanner machine / state computer hookup, just to check a couple of
    cars a month. I'm sure motorists love it too...
    Philip Nasadowski, Apr 26, 2005
  5. ganjatoker

    SMacIntyre Guest

    Started 4/1 of this year for any vehicle '96 and newer. Older vehicles
    still have to have emisions checked on the dyno as done previously (at least
    downstate). Basicly, it's a pretty fool proof way for NY to inspect the
    vehicle. In the past, you could shove the emmisions probe in teh tailpipe
    of another car, or find other tricks to fool the emisions machine. Now,
    they basiclly use the on board computer to check how your vehicle is
    performing. You can't fool it because the onboard computer has the car
    information (VIN, etc) and the inspector has to scan the bar code on the
    registration sticker in the window. If they don't match, it fails. The
    other thing is that the onboard computer keeps a list of trouble codes in a
    que of some kind, so even if you've fixed the problem, you have to drive the
    car for about 30 minutes in normal traffic before it'll clear out. In
    addition, if the mechanic resets the onboard computer, you again have to
    drive it for about 30 minutes before it'll start "recording" anything. If
    you try to inspect the car before the 30 minutes, it'll come up as a
    failure. Techinially, on a good car, Inspection time goes a lot quicker.
    They just do the safety, and plug in the computer and off you go. But if
    you have a code issue, they could be chasing the problem around for hours or
    days. My suggestion for all NY'ers is to get your car inspected at least
    3-4 weeks before it's due if it's a older car and if you've have the service
    light come on at all.
    SMacIntyre, Apr 26, 2005
  6. ganjatoker

    ganjatoker Guest

    Thank you for the very informative posts. We had the pleasure of
    learning all of this yesterday. At first, the car had a number of
    diagnostic codes set, as I originally posted - these were determined by
    the testing center. Autozone did a reset, so we could eliminate the
    'symptoms' and find what was wrong. Turned out to be the knock sensor,
    a $22 part on the Saturn. However, "P0733 Gear 3 Incorrect Ratio" is a
    problem with the transmission, which the owner knows of but hasn't
    repaired yet, as he is waiting for it to completely fail (the car has
    almost 250,000 miles on it!). New York state requires that no codes be
    set at all, (ie. Service engine soon light = off) I believe, so to fix
    the car requires a new transmission. This I can't understand... would
    it really have that much of an impact on the environment? I am all for
    protecting our environment, but this seems more like bureaucracy to me.
    Fortunately, there is a week left in the month, plus a few weeks extra
    extension, I believe, so that the car to be brought into line with the

    After the car was reset, it did take about 5-10 minutes of driving for
    the service light to come back on.

    The system does indeed seem quite cheat proof for the moment. But
    should we really be testing to make sure everyone's transmissions are
    operating perfectly?
    ganjatoker, Apr 26, 2005
  7. ganjatoker

    Bob Shuman Guest

    Regarding the 0733 code and incorrect gear ratio, I am guessing there may be
    a defective or failed transmission solenoid so the transmission is not
    shifting to the proper gear as the computer would like. I posted a
    procedure for measuring the solenoid resistance about a month back. It only
    requires removal of the connector which is held on by a 7mm? bolt and a
    basic ohm meter. It would take no more than 5 minutes to check these
    resistances. there are 5 solenoids and 10 pins in the connector. Each
    solenoid uses adjacent pins and all should measure 4-6 ohms when cold. If
    you find one, like I did with a higher or lower resistance (mine was 1600
    ohms) it has opened or shorted so needs to be replaced. The procedure was
    not too difficult and parts cost was about $80 for the solenoid and trans
    cover gasket. I'd suggest they do the diagnostic to see if a solenoid is
    not working so would leave the trans in the wrong gear...given the lack of
    other symptoms, it is likely this is the overdrive (4th) gear.


    Good luck!
    Bob Shuman, Apr 26, 2005
  8. ganjatoker

    shoppa Guest

    P0733 Gear 3 Incorrect Ratio
    Have you tried driving it with the transmission only in 2? You only
    gotta do it for 30 minutes after the reset, as I understand the rules.
    Driving in 2 is not a major (only minor!) PITA as long as you don't
    have to go at highway speeds.

    shoppa, Apr 27, 2005
  9. ganjatoker

    teem Guest

    Here in Ohio,they have a lame-o emission test that is quickly losing
    popularity,but,the county I live in HAS TO do it.Yours sound more
    teem, Apr 28, 2005
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