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1994 na mr2. Pinging issues and running rough

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Hurseyp
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2011/11/13 14:45:33 (permalink)
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1994 na mr2. Pinging issues and running rough

Hi guys
I'm an absolute newbie with mr2's.
I have added a bottle of injector cleaner, rebooted the ecu.
I shorted the terminals in the diagnostic plug but could not get timing under 20 deg. I don't think shorting had any effect?
I thought I might clean the air flow meter but have not been able to locate one?

Any ideas would be welcom

Cheers

Pete😝
#1


19 Replies Related Threads

    just_ace
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    Re:1994 na mr2. Pinging issues and running rough 2011/11/13 15:53:53 (permalink)
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    so no matter how much you turned the dizzy you couldn't get 10deg btdc with TE1/E1 bridged? sounds like the timing belt is on wrong for one reason or the other.
     
    another possibility which is what i had (tho i could still get 12btdc with dizzy turned all one way) was the Throttle stop wasnt set right so the TPS wasn't returning to idle mode when it should be. but yeh pretty sure it's the first one.
     
    also what fuel do you run, in best to run 95+ ron you will get pinging with reg 91
    #2
    just_ace
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    Re:1994 na mr2. Pinging issues and running rough 2011/11/13 15:55:15 (permalink)
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    also is yours NA or turbo? only the 89-93 turbo's have an AFM all NA's and 93+ turbo's have MAP and AIT sensors
    #3

    Hurseyp
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    Re:1994 na mr2. Pinging issues and running rough 2011/11/13 17:28:26 (permalink)
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    Hi
    I am running premium unleaded fuel 95 Ron
    I have also just changed the timing belt but triple checked that all the timing marks were correct and the problem existed prior to me changing the timing belt? What a labour of love that was
    Shorting the test terminals didn't seem to make any difference. Do they have a history of connection probs. Suppose I could buzz out the cable and check?

    Cheers

    Pete
    #4
    blacky83
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    Re:1994 na mr2. Pinging issues and running rough 2011/11/13 18:18:05 (permalink)
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    If your timing is as 20degrees base then thats going to be causing your problems. I assume the 3SGE still uses a dizzy, so you might need to take it out and rotate more.
    #5
    just_ace
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    Re:1994 na mr2. Pinging issues and running rough 2011/11/13 20:14:38 (permalink)
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    So does adjusting the dizxy adjust the ign timing? Or is it 20btdc no matter what you do?
    #6
    Hurseyp
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    Re:1994 na mr2. Pinging issues and running rough 2011/11/14 12:29:39 (permalink)
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    HI
    timing does move with the dizzy. 20deg is the lowest advance I can get.
    I haven't checked shorting the terminals since rebooting the ecu. 
    Will re check over the next couple of days as I have to remove the aircon belt to view the timing marks.
    thanks so far for your help
     
    cheers
     
    Pete;-)
    #7
    just_ace
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    Re:1994 na mr2. Pinging issues and running rough 2011/11/14 12:49:45 (permalink)
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    Whats diff with your mr2? I never had to remove the ac belt to view timing marks etc


    What timing marks did you have it lined up with?

    Other possible issue is that you have the wrong timing belt perhaps..
    #8
    Hurseyp
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    Re:1994 na mr2. Pinging issues and running rough 2011/11/15 18:55:52 (permalink)
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    I have trouble viewing the ignition timing marks on the harmonic balance and bottom timing cover from the top without removing the ac belt. Is the an easier way to do this? Cheers pete
    #9
    Reddtarga
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    Re:1994 na mr2. Pinging issues and running rough 2011/11/16 10:59:27 (permalink)
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    There are only 4 marks on the timing cover in 5 degree intervals, that can still be seen with the a'c belt still on.
    The numbers can't be seen but that doesn't matter 'cos you can easily work out what they are. 
    The critical -10  mark is larger than the others.
    Remove the side engine cover for better access anyway.
     
    post edited by Reddtarga - 2011/11/16 11:12:13

    Attached Image(s)


    1990 ADM NA
    Any advice you get from me may only be worth what you paid for it.
     
     
     
     
     
    #10
    Hurseyp
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    Re:1994 na mr2. Pinging issues and running rough 2011/11/16 11:16:38 (permalink)
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    Thankyou
     
    I will give it a try
     
    cheers
     
    Pete
    #11
    Hurseyp
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    Re:1994 na mr2. Pinging issues and running rough 2011/11/19 16:40:30 (permalink)
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    Hi guys
    Had a mechanic mate of mine have a look this morning. The timing belt is 1/2 a tooth out? And the best be could get the timing was 15 deg.

    The belt I took off had 177 teeth, which supposedly a diesel belt. The gates belt I put on had 178 teeth but was for up to a 1993 model. Mine is 11/94.
    Can anyone tell me how many teeth the belt should have. Do I need to go for a genuine Tojo belt?

    Cheers

    Pete
    #12
    just_ace
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    Re:1994 na mr2. Pinging issues and running rough 2011/11/19 17:36:17 (permalink)
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    Win for me, yes you must have the early gen2 timing belt on your gen3. Just get a new genuine one. Theyre not exp. I can get for $60odd last time I checked.

    If you need the correct part number lemme know
    #13
    just_ace
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    Re:1994 na mr2. Pinging issues and running rough 2011/11/19 17:43:52 (permalink)
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    Its 13568- 79105
    #14
    Hurseyp
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    Re:1994 na mr2. Pinging issues and running rough 2011/11/19 21:12:58 (permalink)
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    Hi just dug out the old belt from the bin. It was a 13568-88460. Is there much difference between these two belts?

    Cheers

    Pete
    #15
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