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Thread: car seems slower after manual conversion

  1. #31
    Founding ****** Automotive Encyclopaedia Mos's Avatar
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    Default Re: car seems slower after manual conversion

    Quote Originally Posted by Kyosho
    MOS: The ECU is throwing codes and flashing the CEL.
    What I have told him to do, WILL fix the CEL issue.
    How much of a wager are you willing to put on that?

    Quote Originally Posted by Kyosho
    If he wants this to stop, the easy fix is to throw the resistors in place.
    WHY? Because the ECU detects that it's throwing a voltage out, but getting nothing back. Hence, throw the correct resistor in there (Instead of the solenoid) and the ECU will be happy thinking there's a "gearbox" and at least fix the issue of the CEL.
    No.
    For starters the CEL is not related to the gearbox - it's the O/D OFF light that gets activated by a "malfunction" in the transmission.
    Don't forget the speed sensor signals which are also needed for the transmission ECU not to barf. Maybe in the commo the resistors are enough, but with a toyota ECU the speed sensor would also be needed.
    (If you don't hook up SP2, transmission ECU might assume you're stationary, but then SP1 to the engine ECU would either tell the transmission ECU it's moving if present, or throw the CEL on if not present - in any case without two speed sensors, one of the lights will be on).

    Quote Originally Posted by Kyosho
    The user is complaining one, of a "slow" feeling car after a conversion, and also of the CEL being on, and O/D light flickering.
    CEL is not related to the gearbox, and the O/D OFF light, being picky, should be removed because there is no auto transmission present.
    I was also under the impression that the original poster was more concerned about the "slow" feeling than the lights.

    Mos.
    Admin, I.T., Founding Member, Toymods Car Club Inc.
    2000 IS200 Sports Luxury 1UZ-FE VVTi, 1991 MX83 Grande 2JZ-GTE (sold)

  2. #32
    Toyota fanatic Grease Monkey Gttwinturbomk3's Avatar
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    Default Re: car seems slower after manual conversion

    Quote Originally Posted by Mos
    How much of a wager are you willing to put on that?


    No.
    For starters the CEL is not related to the gearbox - it's the O/D OFF light that gets activated by a "malfunction" in the transmission.
    Don't forget the speed sensor signals which are also needed for the transmission ECU not to barf. Maybe in the commo the resistors are enough, but with a toyota ECU the speed sensor would also be needed.
    (If you don't hook up SP2, transmission ECU might assume you're stationary, but then SP1 to the engine ECU would either tell the transmission ECU it's moving if present, or throw the CEL on if not present - in any case without two speed sensors, one of the lights will be on).


    CEL is not related to the gearbox, and the O/D OFF light, being picky, should be removed because there is no auto transmission present.
    I was also under the impression that the original poster was more concerned about the "slow" feeling than the lights.

    Mos.

    OK fellas, we dont know exactly what the problem is here, so its to difficult to say "this will do that" and it is getting on the technical side of things a little i have to admit now so....
    Im sure all of the information has been taken on board that has been discussed here. Who could know what to do for sure without test driving yourself and seeing the behaviour of everything anyway! Just Ideas and maybe some advise can be taken in from all thats been discussed as too the next step that is to be made.

  3. #33
    Junior Member Carport Converter Z2TT's Avatar
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    Default Re: car seems slower after manual conversion

    Maybe like MOS said you just haven't got used to the gearbox yet, since its a very heavy car with a underpowered engine, you should rev higher in each gear before changing.

  4. #34
    Junior Member Backyard Mechanic VasH's Avatar
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    Default Re: car seems slower after manual conversion

    "error code 52 Engine at > 2000 rpm and no signal received from knock sensor"

    Is this bad? how do i fix it ? thanks
    1989 JZZ20 Soarer, 1JZGTE - The Project
    1984 YN57 Hilux, 4Y - The Daily

  5. #35
    Sleeper Central Backyard Mechanic Pure_In_Sanity's Avatar
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    Default Re: car seems slower after manual conversion

    Wire under the intake that you spoke of earlier - sounds like it might have been the knock sensor?

  6. #36
    Junior Member Backyard Mechanic VasH's Avatar
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    Default Re: car seems slower after manual conversion

    lol turns out that was it must of knocked it off when i was putting the starter back in, sigh.

    thanks a heap everyone for the advice anyway

    Its drives friggin sweet now!
    1989 JZZ20 Soarer, 1JZGTE - The Project
    1984 YN57 Hilux, 4Y - The Daily

  7. #37
    Touching Automotive Encyclopaedia Aust162's Avatar
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    Default Re: car seems slower after manual conversion

    Quote Originally Posted by VasH
    lol turns out that was it must of knocked it off when i was putting the starter back in, sigh.

    thanks a heap everyone for the advice anyway

    Its drives friggin sweet now!
    Hahaha. good stuff mate

    The car will run like crap with the knock sensor unplugged!
    *hearts* his 4age powered KE70 Panelvan!
    Hi, Im enthused about corollas..

  8. #38
    Junior Member Backyard Mechanic VasH's Avatar
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    Default Re: car seems slower after manual conversion

    Quote Originally Posted by Aust162
    Hahaha. good stuff mate

    The car will run like crap with the knock sensor unplugged!
    yea it was running like my gf's mazda 121 and after cleaning up the engine bay today it was amazing i made it home....
    1989 JZZ20 Soarer, 1JZGTE - The Project
    1984 YN57 Hilux, 4Y - The Daily

  9. #39
    Toymods member no 341 Domestic Engineer amichie's Avatar
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    Default Re: car seems slower after manual conversion

    Does this thing have traction control?
    If so it may be confused by the gearbox change.

  10. #40
    Riverina Chapter Automotive Encyclopaedia andyroo's Avatar
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    Default Re: car seems slower after manual conversion

    Quote Originally Posted by VasH

    Sounds like a pod racer
    2009 Toyota Hilux SR V6 4x4
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  11. #41
    Junior Member Automotive Encyclopaedia JZA70R_92's Avatar
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    Default Re: car seems slower after manual conversion

    that sounds really rooted!
    1992 - JZA70 STOCK - SOLD

  12. #42
    Junior Member Backyard Mechanic VasH's Avatar
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    Default Re: car seems slower after manual conversion

    yea i fear the worse too, oh well aslong as it holds up until i can chase another one ill be happy
    1989 JZZ20 Soarer, 1JZGTE - The Project
    1984 YN57 Hilux, 4Y - The Daily

  13. #43
    My Wife says I have Too Much Toyota o_man_ra23's Avatar
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    Default Re: car seems slower after manual conversion

    1) for future reference ALWAYS check what codes are being flashed at you before assuming they are innocent and ignorable. This problem would have been fixed 2 pages ago.

    2) there is an issue in your layshaft bearings, my advice is to swap out the box for a known good one (cheap option) or replace all bearings and be happy the box is not likely to have bearing problems for a while longer (lots more expensive, better result, and I advise to pay somebody to do this unless you are uber confident and have played with similar things before)

    3) piss the OD light off unless you intend to go back to auto later

    4) keep the twinplate clutch, they are the best thing since sliced bread for a street driven high performance car with a manual.
    Cheers, Owen
    1977 RA28 with 1JZ-GTE (Was 18R-GTE)
    Lancer EVO Brakes into old Celica/Corolla/Corona
    Doing the things that aren't popular... cause being popular and being good are often distinctly different.

  14. #44
    Junior Member Automotive Encyclopaedia JZA70R_92's Avatar
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    Default Re: car seems slower after manual conversion

    Get the box rebuilt like omanra23 say make sure its a proper rebuild. No point buying another box that may die in 2days or 2 years. to get rid of the OD light either take apart the dash and put black tape over it or get a manuel ECU that removes the OD light for good...or just live with it I did for 4 years lol till i scored a EBAY gen 3 ecu foir $10 CHEAP!
    1992 - JZA70 STOCK - SOLD

  15. #45
    Junior Member Backyard Mechanic VasH's Avatar
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    Default Re: car seems slower after manual conversion

    Quote Originally Posted by GA70H_92
    Get the box rebuilt like omanra23 say make sure its a proper rebuild. No point buying another box that may die in 2days or 2 years. to get rid of the OD light either take apart the dash and put black tape over it or get a manuel ECU that removes the OD light for good...or just live with it I did for 4 years lol till i scored a EBAY gen 3 ecu foir $10 CHEAP!
    Yea im looking into it, most places are around 800ish if i take the box out and drop it in. Though im looking at a really low k' box from another importer but its just as much as reconditioning

    yea im not fussed about the light its not an issue anymore, ill cover it up at some point

    Im seriously considering just getting another car, im not really in a position to stuff around so much with my daily as i used to be, when i had a big car port and work was a 20min walk, if somethin stuffed up it was no drama.
    1989 JZZ20 Soarer, 1JZGTE - The Project
    1984 YN57 Hilux, 4Y - The Daily

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