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1994 4Runner no spark, engine turns, Code 12, =Broken timing Belt

Discussion in '2nd Gen 4Runners (1990-1995)' started by 95+94 4runner 4x4, Sep 14, 2020 at 3:40 PM.

  1. Sep 14, 2020 at 3:40 PM
    #1
    95+94 4runner 4x4

    95+94 4runner 4x4 [OP] New Member

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    So it drove 200 miles camped dirt roads, then died at a stop light by my house withno warning, won’t restart. starter turns/cranks. no spark as starter fluid does nothing. Fuse? ignitor?
    Im hoping someone had this issue.
     
  2. Sep 14, 2020 at 4:49 PM
    #2
    Oldtoyotaguy

    Oldtoyotaguy Not a new member

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    Can you hook that gen up to a scan tool?
     
  3. Sep 15, 2020 at 11:22 AM
    #3
    95+94 4runner 4x4

    95+94 4runner 4x4 [OP] New Member

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    I think I have to do the paper clip thing on the odb and count the lights... guess Ill have to do that?
     
  4. Sep 15, 2020 at 11:37 AM
    #4
    Oldtoyotaguy

    Oldtoyotaguy Not a new member

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    Electrical malfunctions can be extremely hard to diagnose without some analytics. You end up guessing, and it can get expensive, unless you have a donor vehicle and you can swap out parts.
     
  5. Sep 15, 2020 at 11:50 AM
    #5
    Dillusion

    Dillusion New Member

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    So by no spark because starter fluid does nothing. Did you actually test for spark or just assuming no spark because starter fluid doesn't work?

    Guess you ruled out a fuel supply issue.
     
  6. Sep 16, 2020 at 9:08 AM
    #6
    95+94 4runner 4x4

    95+94 4runner 4x4 [OP] New Member

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    I did rule out fuel supply, I do have a donor vehicle, I was about to start following from ingnitor-distributer ect.
    would that be what you all would do, or should I just see if I can pull a code? I was hoping it was a fuse I was missing but switched out a couple from spare vehicle with no changes.
     
  7. Sep 16, 2020 at 9:40 AM
    #7
    Oldtoyotaguy

    Oldtoyotaguy Not a new member

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    For sure, I'd try and see if it was showing any codes. With donor parts, just be methodical until you find it, maybe take notes and photos while you do it. At least you don't have to buy those expensive parts you're experimenting with!
     
  8. Sep 16, 2020 at 11:01 AM
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    Dillusion

    Dillusion New Member

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    I would suggest not just guessing and swapping parts.

    Check for spark first and go from there.
     
  9. Sep 18, 2020 at 7:54 AM
    #9
    Fishguy

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    Replaced EGR vacuum modulator!
    Toyota 1990-1995 vehicles obd1 code retrieval
    When the check engine light shows up in your 1990-95 Toyota vehicle, the quickest way to get the code is to access the diagnostic connector in the engine compartment ( usually sitting in the fender) or by the kick panel under the dash board in the passenger side. Connect a jumper wire between terminals TE1 and E1 terminals and by turning the key on, it will start flashing the codes in your dash. On Tercel and MR2, use the jumper wire between terminals T and E1 instead.

    If there are no codes, the check engine light will flash 2 times per second CONSTANTLY with no patterns or pauses. If there are any codes, it will be shown in 2 digits codes. Example: code 24 is shown as 2 flashes, a pause followed by 4 flashes. If there are mode codes, the next one will transmitted after 2.5 seconds. (One some models, codes are displayed in one digit code only and the difference is the codes are displayed with 4.5 seconds delay between codes). When finished reading the codes, turn the key off and remove the jumper wire.

    Shown below is an example of the location of the diagnostic connector.

    Here are the common codes for Toyota vehicles 1988-95:

    Code 11 Momentary interruption in power supply to ECU (electronic control unit or computer) up to 1991
    Code 12 Engine revolution signal missing
    Code 13 Rpm signal to ecu missing above 1000 rpm
    Code 14 Igniter signal to ecu missing
    Code 16 A/T control signal missing from ecu
    Code 21 Main oxygen sensor signal fault
    Code 22 Water temperature sensor circuit fault
    Code 23 and 24 Intake air temperature signal fault
    Code 25 Air/fuel ratio LEAN
    Code 26 Air/fuel ratio RICH
    Code 27 Sub-oxygen sensor signal or heater circuit fault
    Code 28 No.2 oxygen sensor/heater signal fault
    Code 31 and 32 Air flow meter circuit or Vacuum sensor signal fault
    Code 34 and 36 Turbo-charging pressure signal fault
    Code 35 Altitude compensation sensor signal fault
    Code 41 Throttle position circuit fault
    Code 42 Vehicle speed sensor circuit
    Code 43 No starter signal to the ecu
    Code 51 AC signal on; DL contact off (in trany shifter with diagnostic connector jumped)
    Code 52, 53 and 55 Knock sensor fault
    Code 71 EGR system malfunction
    Code 72 Fuel cut solenoid signal fault
    Code 78 Fuel pump control signal fault
    Code 81, 83, 84 and 85 TCM communication fault
     
  10. Sep 18, 2020 at 3:20 PM
    #10
    95+94 4runner 4x4

    95+94 4runner 4x4 [OP] New Member

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    Ok checked for spark, as suspected there was none, used method dirscribed above (Thankyou!) I got code 12
    Engine revolution signal missing...?
    ideas?
    Im hoping rotor in Distributer
     
    Oldtoyotaguy likes this.
  11. Sep 18, 2020 at 3:23 PM
    #11
    Fishguy

    Fishguy New Member

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    Replaced EGR vacuum modulator!
    Crank position sensor?
     
  12. Sep 18, 2020 at 3:34 PM
    #12
    95+94 4runner 4x4

    95+94 4runner 4x4 [OP] New Member

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    ok distributor looks old and worn/dirty and 96F75B6E-A249-448C-A228-7C0DF0FEB0F9.jpg is not turning when cranking over, belts and fan are moving
     
  13. Sep 18, 2020 at 3:53 PM
    #13
    Fishguy

    Fishguy New Member

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    Replaced EGR vacuum modulator!
    I just re-furbished a '95 4runner. Went with plugs, wires, etc. It made a difference. You should have seen the plugs! I bet they had 250k on them.
     
  14. Sep 18, 2020 at 7:58 PM
    #14
    95+94 4runner 4x4

    95+94 4runner 4x4 [OP] New Member

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    Well swapped distributor and still no spark... starter is turning engine and belts over. im stumped.. ingitor? is there a way to bridge across it?
     
  15. Sep 18, 2020 at 11:20 PM
    #15
    Dezman92

    Dezman92 New Member

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    If your distributor isn’t turning I would check to see if your timing belt is broken.
     
  16. Sep 19, 2020 at 8:08 AM
    #16
    95+94 4runner 4x4

    95+94 4runner 4x4 [OP] New Member

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    UPDATE,
    Found it had a Broken Timingbelt!
    First one of my life. at idle at a stop light..
    Well time to fix. Thanks for all your help everyone!
     
    Oldtoyotaguy likes this.
  17. Sep 19, 2020 at 8:10 AM
    #17
    Fishguy

    Fishguy New Member

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    Replaced EGR vacuum modulator!
    Yep. That will keep it from starting. Thanx for the update!
     
  18. Sep 19, 2020 at 11:42 AM
    #18
    Dezman92

    Dezman92 New Member

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    Called it
     
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