1. Bump posts missing? We are spring cleaning the Forums so these posts are being removed to optimize the database further. Don't be concerned, you can continue to do whatever you do. Will be developing the site further as well through the coming weeks so do watch out for those! You can close this notice now
    Dismiss Notice

Emanage Blue Problem (4G93 SOHC)

Discussion in 'Car Talk' started by sanekit, Feb 23, 2017.

  1. sanekit

    sanekit Well-Known Member

    Joined:
    Dec 9, 2015
    Messages:
    1,491
    Likes Received:
    120
    Hi guys, this is gonna be a long post.
    Recently my car had this very weird problem with my emanage. The problems happened after I got my throttle stuck. I was driving one night when the throttle just stuck at nkve highway. Stomp the gas pedal and it got fix. Then drove out of toll it happen again. To cut the story short, I stopped by the road side and fiddle with the throttle return spring and i manage to fix it enough to drive home.

    The next day when I check the TB, the return spring does have a problem. So i put some WD40 on it as a temporary fix. Called my mech and he said drop by for checkup. This is when the emanage magnificently gave me headache.

    The next day (after i troubleshoot the return spring) i drive off to the workshop. Was driving very slow. 5-10% throttle only coz I'm afraid the throttle will jam again. Suddenly when I was driving the car just died. Tried to roll the engine again but nothing. Waited a bit for the engine to cool off only can start but it'll die again after 2-3 minutes. The engine temp all ok. Had to tow the car to the workshop and leave my car there.

    The funny thing is, if we remove the emanage and use stock ecu, the car runs fine. We took it to dyno at Ferlin Tuneup to check if the emanage got any error codes or problems. None. The emanage was working fine. But while tuning the car, the engine died again at revcut. We tried change the emanage with AVS (emanage ultimate clone) and the engine still die at revcut. After fiddling with the wiring, taped any bare connectors and separating them, poof the car was ok and made a very healthy result.

    The next day I thought of driving up Ulu Yam and test the car but the engine died again. Ended up removing the emanage and drove with stock ECU. After that, I send back to the workshop and ask my mech to check again. Took him about a month and only got my car last night.

    Anyone had this issue before? I'm still worried that car will die again. Mech swap the coolant temp sensor and distributor somehow he said it's ok now.

    Before I had this issue, the distributor died out without warning. List of stuff changed before the emanage issue:

    1. Distributor
    2. Throttle body swap to 4g63 sohc
    3. Full rubber crossmember engine mount.

    My car is a 4g93 sohc auto. Looking forward for your advice. Thanks! :driver:
     

    Attached Files:

  2. y2188

    y2188 Active Member

    Joined:
    Jan 4, 2016
    Messages:
    441
    Likes Received:
    42
    Must be the engine mount! :biggrin:
     
  3. sanekit

    sanekit Well-Known Member

    Joined:
    Dec 9, 2015
    Messages:
    1,491
    Likes Received:
    120
    Swap dy the rear crossmember mount to stock coz of the massive rattling. :banghead:
     
  4. sweelt

    sweelt Well-Known Member

    Joined:
    Nov 6, 2016
    Messages:
    2,153
    Likes Received:
    199
    maybe ECU too smart, cant cheated by e-manage. :nurse:
    U can plug laptop/scantool to obd port (must bring it a long while driving). Hopefully can check what fault that cause engine shut off on the spot.
     
  5. sanekit

    sanekit Well-Known Member

    Joined:
    Dec 9, 2015
    Messages:
    1,491
    Likes Received:
    120
    I think MMC 93 ECU is open loop. It only close loop at idle? Since I install emanage last year at GT Auto, the CEL always blinks. I read online it says on MMC it's like that. Don't have a scantool to check while driving tho. So far no engine shut off while driving. The car a bit sluggish on power mode like driving in eco mode. Mech accidentally cut a wire at the gearbox near the valve body while fixing a leak and replace gb filter. Will get that check again this weekend.
     
  6. ixeo

    ixeo Senior Member
    Senior Member

    Joined:
    Jun 26, 2005
    Messages:
    4,540
    Likes Received:
    2,928
    But this problem didn't exist before. Right?
     
  7. sanekit

    sanekit Well-Known Member

    Joined:
    Dec 9, 2015
    Messages:
    1,491
    Likes Received:
    120
    Nope. Just recently after my throttle jam. The CEL blinking was like that after installation. The sluggishness happens when I got my car from the workshop. Usually when I drive using PWR mode, definitely can feel the difference between ECO. In ECO mode the gear shifts early before 3k rpm. PWR mode shifts after 3.5k-4k rpm and has more pull to it.
     
    #7 sanekit, Feb 23, 2017
    Last edited: Feb 23, 2017
  8. ixeo

    ixeo Senior Member
    Senior Member

    Joined:
    Jun 26, 2005
    Messages:
    4,540
    Likes Received:
    2,928
    Throttle jam, the STFT reads as rich, cut fuel, logged in LTFT? And now the E-Manage's tune no longer corresponds to the stock ECU since the mapping has changed. I am only making a guess.

    :hmmmm:

    Why not go back to GT-Auto since they did the tune?
     
  9. sanekit

    sanekit Well-Known Member

    Joined:
    Dec 9, 2015
    Messages:
    1,491
    Likes Received:
    120
    Maybe that's what happen. Coz when the throttle jam i straightaway neutral and turn off engine. Tried to fiddle with the return spring and start the car a few times until I can drive back. But when I send to Ferlin to check and tuning, there's no error code from the Emanage. I didn't go back to GT Auto coz I don't have the budget that time.

    Been driving the car for 2 days now. So far engine still runs ok. Just need to fix the sluggishness this Sunday. :bawling:
     
  10. vr2turbo

    vr2turbo 5 Year | Silver
    Helmet Clan Moderator

    Joined:
    May 11, 2010
    Messages:
    29,051
    Likes Received:
    8,135
    Sunday rev kao kao, clear carbon......lol:rofl:
     
  11. sanekit

    sanekit Well-Known Member

    Joined:
    Dec 9, 2015
    Messages:
    1,491
    Likes Received:
    120
    engine rev so slow how to rev kao kao? :bawling:

    i think the ignition timing setting is not correct coz mech swap distributor. :bawling:
     
  12. vr2turbo

    vr2turbo 5 Year | Silver
    Helmet Clan Moderator

    Joined:
    May 11, 2010
    Messages:
    29,051
    Likes Received:
    8,135
    Manually shift...1, 2, 3....D......lol:biggrin:
     
  13. sanekit

    sanekit Well-Known Member

    Joined:
    Dec 9, 2015
    Messages:
    1,491
    Likes Received:
    120
    damn crawling like a :slug:
     
  14. parakey

    parakey Senior Member
    Senior Member

    Joined:
    Apr 30, 2012
    Messages:
    1,115
    Likes Received:
    165
    You can temporarily adjust it manually. Before doing it, better mark down the current settings. Turn clockwise to advance. Responsiveness should improve. Then find an incline/hill to drive up slowly. If engine pings, you need to retard it (anti-clockwise). Trial and error until you find a settings that you are comfortable with.
     
  15. sanekit

    sanekit Well-Known Member

    Joined:
    Dec 9, 2015
    Messages:
    1,491
    Likes Received:
    120
    I know I can but I'm scared later I adjust the settings suddenly the engine shut off again. So I'm just gonna let my mech do it. :burnout:
     
  16. parakey

    parakey Senior Member
    Senior Member

    Joined:
    Apr 30, 2012
    Messages:
    1,115
    Likes Received:
    165
    In light of this, I think that's a prudent move. A lackadaisical car is better than a non moving one. :driver:
     
  17. vr2turbo

    vr2turbo 5 Year | Silver
    Helmet Clan Moderator

    Joined:
    May 11, 2010
    Messages:
    29,051
    Likes Received:
    8,135
    But your mechanic should have tuned it. I don't think he will just swap over without tuning.....:hmmmm:
     
  18. sanekit

    sanekit Well-Known Member

    Joined:
    Dec 9, 2015
    Messages:
    1,491
    Likes Received:
    120
    He was still troubleshooting the emanage engine cut off problem. I think he just set the distributor to stock timing. Last time Ferlin advance the timing coz the previous distributor not enough juice. :bawling:
     
  19. vr2turbo

    vr2turbo 5 Year | Silver
    Helmet Clan Moderator

    Joined:
    May 11, 2010
    Messages:
    29,051
    Likes Received:
    8,135
    Nothing to do with Distributor whether got juice or not.....lol
    Is the engine. If engine in fine health, stock timing is best, get good low and high. Engine not too good need to advance then get good low but suffer high end. My previous Honda 3 door timing was advance quite a lot, but those days running 97
     
  20. sanekit

    sanekit Well-Known Member

    Joined:
    Dec 9, 2015
    Messages:
    1,491
    Likes Received:
    120
    I'm running on 97 oso. But my emanage i install the injector harness. Last time distributor kong and change new one same like this. I'm out ideas. Tomorrow go back workshop check, flush the TOYOTA atf oil and use back mitsu atf oil.

    EDIT: If oversize valve and TB need to advance timing a bit right?
     

Share This Page