Page 2 of 2 FirstFirst 12
Results 16 to 27 of 27

Thread: 4AFE into Toyota TA47 -80 RWD.

  1. #16
    Junior Member Backyard Mechanic jondee86's Avatar
    Join Date
    Dec 2008
    Location
    Wellington, NZ
    Posts
    415

    Red face Re: 4AFE into Toyota TA47 -80 RWD.

    Congratulations When you choose to do something different, there are bound to be difficulties to overcome. The reward is hearing your creation burst into life for the first time !!!

    Cheers... jondee86

  2. #17
    Forum Member 1st year Apprentice
    Join Date
    Dec 2018
    Location
    Alvsborg
    Posts
    15

    Default Re: 4AFE into Toyota TA47 -80 RWD.

    Well got it running quite good right now and been driving it around. Fun with a bit more power but i notic that the idle of the car is a bit high most of the time and it got a bit uneven idle.

    Checked alot for leaks in the intake but cant find any.. got the IAC loose and cleaned it but it still is not running quite right.

    Do anyone have a idea of what can cause it? it really messes with my head. Thanks

    Otherwise i will soon upload some pictures of the current status of the car running.!

  3. #18
    Forum Member 1st year Apprentice
    Join Date
    Apr 2019
    Location
    vic
    Posts
    5

    Default Re: 4AFE into Toyota TA47 -80 RWD.

    Ive been watching your thread with interest, well done. How much better does it go? you would have taken a bit of weight out of the car with the engine change, so it might even handle better?
    Your on the right track looking for leaks, the air is getting into the engine somehow. Does it idle if you block off the intake with your hand? If it does it would indicate an air leak. also check that vacuum lines by clamping them, Although rare a faulty brake boster can cause high idle.

  4. #19
    Forum Member 1st year Apprentice
    Join Date
    Dec 2018
    Location
    Alvsborg
    Posts
    15

    Default Re: 4AFE into Toyota TA47 -80 RWD.

    Thanks! Havn't clockt it yet for 0-100 but i feel quite a lot faster, although that can be the new lovely intake sound fault. But when i get it running proper i will do some tests.
    I guess my bad flowing intake and header is stealing some power tough

    For the weight i am guessing it's around 30 kilos lighter then before. Cant feel that since the car's dampers are really bad at the moment since it was standing still for 9 years. they are also really hard to find new ones in Sweden.
    So while we on it, do any front/rear struts fit from other cars with easy/ no modifications? Cant find much info on it.

    Been checking with blocking the IAC and then it dosn't dies sometimes and sometimes it does so seems like a tiny leak. Been going trough the vaccum's and dont find any there. I have blocked of quite alof of vaccum and also change places of some of the sensors so im thinking that can come into play?

    Otherwise i havn't check the breakbooster, sounds like it can be that! thanks
    Last edited by Ceasar; 07-06-2019 at 06:44 PM.

  5. #20
    Forum Member 1st year Apprentice
    Join Date
    Dec 2018
    Location
    Alvsborg
    Posts
    15

    Default Re: 4AFE into Toyota TA47 -80 RWD.

    One more question, since i have been cutting alot of cabels that i thott i dont need i started to think of the A/C idle up. that would make the ECU increase idle when A/C is activated. Do anyone know how this works or if it can be part of the problem.
    Maybe other ecu electrics to?
    electrical chart
    http://bgbonline.celicatech.com/90ew...l%20(4AFE).pdf

    * checked the breakbooster and no problem there also went over one time more for leaks dont find any.
    Also if i block of the intakeport the engine dies, so might not be a leak?

    Still its running very high idle.
    Also thott that it might be that the new intake design that kind of have the IAC above/lvled with my resivorar so it traps air and wont close?
    Last edited by Ceasar; 07-06-2019 at 10:08 PM.

  6. #21
    Junior Member Backyard Mechanic jondee86's Avatar
    Join Date
    Dec 2008
    Location
    Wellington, NZ
    Posts
    415

    Default Re: 4AFE into Toyota TA47 -80 RWD.

    Looks like the idle-up valve is a simple on-off 12V solenoid, so see if disconnecting it while the engine is running makes any difference. Also check your ignition timing as too much advance can push the idle speed up.

    Cheers... jondee86

  7. #22
    Forum Member 1st year Apprentice
    Join Date
    Dec 2018
    Location
    Alvsborg
    Posts
    15

    Default Re: 4AFE into Toyota TA47 -80 RWD.

    Dubbelchecked the timing and yeah it had moved so that was the main problem, solved it and it run much better but the idle is still very high and think i has to do with the idle-up, it seems to flow all the time?
    Shouldn't close when the car get hot?
    Had a quite high fuel consumption to of 0.9L/10km?

    So i made a roadtrip home from school of 1400km with the car, was so scared that it wouldn't hold up but i really worked the whole way if you take away the high idle and some (i think) transmission driveshaft imbalance which made it vibrate a lot above 100km/h, seem to have some play in the differential?

  8. #23
    Forum Member 1st year Apprentice
    Join Date
    Apr 2019
    Location
    vic
    Posts
    5

    Default Re: 4AFE into Toyota TA47 -80 RWD.

    The idle up should shut off when hot so it could be faulty, or the computer thinks the engine is cold. or it thinks the AC is on.
    Also if the car has been sitting around for 9 years the tires could have flat spots which can cause vibrations. Good on you taking it on a road trip, sounds like a blast.

  9. #24
    Forum Member 1st year Apprentice
    Join Date
    Dec 2018
    Location
    Alvsborg
    Posts
    15

    Default Re: 4AFE into Toyota TA47 -80 RWD.

    Was thinking about that, i have the first generation 4AFE so my IAC (intake idle up) dont have any electric's just added water from cooling system.
    But do the ECU compute and "idle" up from the 2 sensors by the thermostat (what i found)? Or do they matter for the ecu?
    Is there anyway to check them to se if they are the problem?

    I have change and balance new rims so think its in the drivetrain! :/

    Was like riding a dildo with the vibrations but quite a lot of fun!

  10. #25
    Forum Member 1st year Apprentice
    Join Date
    Apr 2019
    Location
    vic
    Posts
    5

    Default Re: 4AFE into Toyota TA47 -80 RWD.

    There are 2 or possibly 3 temp sensors one for the temp gauge, one for the thermo fan, and one for the ECU. The one for the ECU will make the mixtures rich or lean based on the temp and on most vechles will control the idle up via the ecu. some older engines have a separte idle up that heated by coolant and is not controlled by the ecu.

  11. #26
    Junior Member Backyard Mechanic jondee86's Avatar
    Join Date
    Dec 2008
    Location
    Wellington, NZ
    Posts
    415

    Lightbulb Re: 4AFE into Toyota TA47 -80 RWD.

    Looking at this manual https://apps.techcollege.dk/autoqr/v...C3%A5ndbog.pdf page FI-131 it appears that the 4AFE has a similar setup to the 4AGE. That is, a coolant heated Auxilliary Air Valve (AAV) and an idle air by-pass screw.

    It is not uncommon for the AAV to become blocked with debris, and if this happens the valve will stay open and you will have a permanently high idle. A simple test is to check if both the water in and water out hoses to the throttlebody get hot. Even easier, if the valve is working your idle will go high on a cold start and slowly taper back to normal idle as the engine warms up. If it doesn't do that the AAV is not working.

    The idle air bypass screw is used to set the idle correctly once the engine is warmed up BUT, that will only work if the AAV is functioning correctly.

    Cheers... jondee86

  12. #27
    Forum Member 1st year Apprentice
    Join Date
    Apr 2019
    Location
    vic
    Posts
    5

    Default Re: 4AFE into Toyota TA47 -80 RWD.

    Have a look at the centre bearing on your driveshaft, if the rubber is rotted out it can cause your vibration.

Similar Threads

  1. 20v into a 4afe corolla.
    By adelk in forum Tech and Conversions
    Replies: 4
    Last Post: 31-12-2011, 01:32 PM
  2. 4AFE air con compressor q's
    By mattysshop in forum Tech and Conversions
    Replies: 3
    Last Post: 24-09-2009, 12:03 PM
  3. sourcing 4afe pistons
    By Sam_Q in forum Tech and Conversions
    Replies: 21
    Last Post: 28-03-2008, 02:23 PM
  4. 4afc/4afe info
    By 200Boy in forum Tech and Conversions
    Replies: 2
    Last Post: 21-05-2007, 11:54 PM
  5. 4age into ae92 that had a 4afe
    By mrf_ool in forum Tech and Conversions
    Replies: 1
    Last Post: 10-07-2006, 10:49 AM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •