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Thread: Nissan Sunny '97 - QG18DE Swap

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    Default Nissan Sunny '97 - QG18DE Swap

    Guys,

    My first experience with an engine swap; got it done in RWP Saddar with a QG18DE (bought from Mushtaq bh).
    The wiring was complete harness to harness and the ECU that came with the engine was ZZ.
    Issues:

    1. Required : OBD-II dash wiring harness as the one already installed is OBD-I and Consult-II wont thus connect to it. Looked all over but cant find the OBD-II wiring harness.
    2. RPM meter not working, the electrician (Ameer, disciple of Malang Ustaad says that a kit is required to be installed as the RPM gets its signal from the ECU).
    3. Auto choke doesnt work (esp on cold mornings when i have to warm the engine up my keeping the pedal pressed).
    4. Black smoke last week but fixed after my last visit to Ameer (after changing the throttle body, coolant temp sensor, Air flow sensor and throttle position sensor).
    5. Faqeer ustaad thinks that the ECU is a mismatch (tried 4 different ECUs but none worked other than the ZZ).
    6. Car's mileage (petrol) is around 10 km/l.

    Any suggestions/way forwards with the above 1,2,3,5 and 6 points ?

    Thanks.


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    Ok Guyz. Replaced the bloody O2 sensor.
    Still unable to find MEC11-022.
    Mileage @ 13 KM/L in city.
    I guess I should go with this ECU, get the MAF replaced with a 5-wire one, run the 5th wire through the harness towards ECU and see if the Intake Air Temp Code goes away.

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    Quote Originally Posted by sarmadz View Post
    Ok Guyz. Replaced the bloody O2 sensor.
    Mileage @ 13 KM/L in city.
    How much did this O2 cost?

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    @IsbCap Courtesy Mushtaq Sb, just returned him the faulty one and got the replacement.

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    ^^^

    Great... And congrats on improved avg.

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    Quote Originally Posted by sarmadz View Post
    Ok Guyz. Replaced the bloody O2 sensor.
    Still unable to find MEC11-022.
    Mileage @ 13 KM/L in city.
    I guess I should go with this ECU, get the MAF replaced with a 5-wire one, run the 5th wire through the harness towards ECU and see if the Intake Air Temp Code goes away.
    I am amazed with Mushtaq knowing that this engine is difficult to wire up, he is taking apart ECUs and wiring. Very bad for a person like him.
    success is the ability to go from one failure to the next without any loss of enthusiasm

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    @IsbCap Courtesy Mushtaq Sb, just returned him the faulty one and got the replacement.

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    @star2.... Yeah, even if they wanna segregate the ECUs, they should atleast mark 'em.

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    hmmmmm seem's to be great improvement.. sorry for the late response I was not in the city. So @sarmadz did you find that ECU which had the burned Relay circuit ????

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    @atta1111. Yes it is. No, I still have it with me. Currently the engine is running on the ECU we set - the only issue with this one is the requirement for 5-PIN MAF (for Intake Temperature Sensor). I will wait for a few more days. Let Mushtaq Sb find the MEC11-022. If no luck, then we install a 5-pin MAF and run another wire to the ECU. What do you say ?

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    MEC11-022 is with Mushtaq Sb now

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    MEC11-022 works like a charm. No check light, all codes clear. Just a little electronic tune up required now @atta1111 please, as promised ).
    Thankyou Guys @atta1111 @star2 @spectra @IsbCap @SER_GTR ... All of you have been a great support .

    To any future members or individuals interested in the awesome QG18DE motor: we here to support and guide !

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    Do check the O2, it is usually suspect. if you ant i can share extracts from service amnual about how to reset ECU and perform idle learning without consut II scan tool. Otherwise take it to Nissand dealership and ask him to scan it and reset. Check O2 specifically for proper function. Once done, you will love your ride and will become a datsun guy for life.
    Keep a cool head and wear seatbelts!

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    @spectra. Thanks.. I replaced the O2 a while ago and got it tested with a multimeter. Seems alright.
    Yeah, sure thing, please do - I will reset it. Nissan dealership not a good experience. Last time, they messed up the TPS positioning causing the motor to jerk while accelerating in first gear. At the moment the car jerks very little during shifting. Had this issue before with the ECU and @atta1111 fixed it through the tool and idle learning...

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    @spectra, already am loving the ride AH. Next step is to beautify the ride.

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    Idle Air Volume Learning

    DESCRIPTION

    “Idle Air Volume Learning” is an operation to learn the idle air volume
    that keeps each engine within the specific range. It must be
    performed under any of the following conditions:
    -Each time IACV-AAC valve, throttle bodyor ECM is replaced.
    -Idle speed or ignition timing is out of specification.

    PRE-CONDITIONING

    Before performing “Idle Air Volume Learning”, make sure that all of
    the following conditions are satisfied.
    Learning will be cancelled if any of the following conditions are
    missed for even a moment.
    - Battery voltage: More than 12.9V (At idle)
    - Engine coolant temperature: 70 - 95?C (158 - 203?F)
    - PNP switch: ON
    - Electric load switch: OFF
    (Air conditioner, headlamp, rear window defogger)
    On vehicles equipped with daytime light systems, if the parking
    brake is applied before the engine is started the headlamp
    will not be illuminated.
    - Cooling fan motor: Not operating
    - Steering wheel: Neutral (Straight-ahead position)
    - Vehicle speed: Stopped
    - Transmission: Warmed-up
    For A/T models with CONSULT-II, drive vehicle until “FLUID
    TEMP SE” in “DATA MONITOR” mode of “A/T” system indicates
    less than 0.9V.
    For A/T models without CONSULT-II and M/T models, drive
    vehicle for 10 minutes.

    OPERATION PROCEDURE

    Without CONSULT-II

    1. Turn ignition switch“ON” and wait at least 1 second.
    2. Turn ignition switch“OFF” and wait at least 10 seconds.
    3. Start engine and warm it up to normal operating temperature.
    4. Check that all items listed under the topic “PRECONDITIONING”,
    EC-83, are in good order.
    5. Turn ignition switch“OFF” and wait at least 10 seconds.
    6. Start the engine and let it idle for at least 30 seconds.
    7. Disconnect throttle position sensorharness connector(<wbr>brown),
    then reconnect it within 5 seconds.
    8. Wait 20 seconds.
    9. Make sure that idle speed is within specifications. If not, the
    result will be incomplete. In this case, find the cause of the
    problem by referring to the NOTE below.
    10. Rev up the engine two or three times. Make sure that idle
    speed and ignition timing are within specifications.

    NOTE:
    If idle air volume learning cannot be performed successfully,
    proceed as follows:
    1) Check that throttle valve is fully closed.
    2) Check PCV valve operation.
    3) Check that downstream of throttle valve is free from air
    leakage.
    4) Adjust closed throttle position <wbr>switchand reset memory.
    (Refer to Basic Inspection, EC-127.)
    5) When the above three items check out OK, engine component
    parts and their installation condition are questionable.
    Check and eliminate the cause of the problem.
    It is useful to perform “TROUBLE DIAGNOSIS SPECIFICATION
    VALUE”, EC-163.
    6) If any of the following conditions occur after the engine
    has started, eliminate the cause of the problem and perform
    “Idle air volume learning” all over again:
    - Engine stalls.
    - Erroneous idle.
    - Blown fuses related to the IACV-AAC valve system.
    Keep a cool head and wear seatbelts!

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    Nissan Sunny 97  QG18DE Swap -1350890

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    Nissan Sunny 97  QG18DE Swap -1350891

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    Nissan Sunny 97  QG18DE Swap -1350892

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    Nissan Sunny 97  QG18DE Swap -1350893

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