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Stuttering and stalling gen 2

Discussion in '2nd Gen 4Runners (1990-1995)' started by Fourtoad, Jun 7, 2019.

  1. Jun 7, 2019 at 3:35 PM
    #1
    Fourtoad

    Fourtoad [OP] Gatorgrl's Yotas

    Joined:
    Apr 30, 2019
    Member:
    #9712
    Messages:
    623
    Gender:
    Female
    First Name:
    Gatorgrl
    SWFL
    Vehicle:
    1991 V6 5 speed super clean, Black and grey
    Stock with headers and after market wheels.
    Ok, we now have intermittent stuttering and stalling. Also the RMP's drop significantly if the a/c is on when stopped at a light or something. Then at other times it runs perfectly.

    What gives?

    Thoughts?

    Book says to set idle at 800, but that seems far too low for my experience with Toyotas. All the ones I have had, all were idled high. I am thinking like maybe it should be around 1200 idle. Might replace the cap and rotor. wires are all new. Help please.
     
  2. Jun 7, 2019 at 3:54 PM
    #2
    SR5 Limited

    SR5 Limited New Member

    Joined:
    Sep 18, 2018
    Member:
    #7180
    Messages:
    9,093
    Vehicle:
    1996 SR5 Limited
    Any smoke in exhaust? Install new cap and rotor and see if it helps let us know? Go with OEM it’s worth it in the long run.....
     
    Last edited: Jun 7, 2019
    Fourtoad [OP] likes this.
  3. Jun 7, 2019 at 4:18 PM
    #3
    Fourtoad

    Fourtoad [OP] Gatorgrl's Yotas

    Joined:
    Apr 30, 2019
    Member:
    #9712
    Messages:
    623
    Gender:
    Female
    First Name:
    Gatorgrl
    SWFL
    Vehicle:
    1991 V6 5 speed super clean, Black and grey
    Stock with headers and after market wheels.
    Yes, will do. We are big believers in OEM parts for Toyotas.
     
  4. Jun 7, 2019 at 6:26 PM
    #4
    Fourtoad

    Fourtoad [OP] Gatorgrl's Yotas

    Joined:
    Apr 30, 2019
    Member:
    #9712
    Messages:
    623
    Gender:
    Female
    First Name:
    Gatorgrl
    SWFL
    Vehicle:
    1991 V6 5 speed super clean, Black and grey
    Stock with headers and after market wheels.
    Well, so we changed the fuel filter with a Toyota fuel filter. Who ever monkeyed with the fuel filter, did a terrible job. It was an aftermarket filter and they butchered the fuel lines because they didn't drop the crossmember to get to the lines better. I drove it home and it did fine. We will still change the cap and rotors anyway.
     
    sleepybear723 likes this.
  5. Jun 7, 2019 at 6:41 PM
    #5
    SR5 Limited

    SR5 Limited New Member

    Joined:
    Sep 18, 2018
    Member:
    #7180
    Messages:
    9,093
    Vehicle:
    1996 SR5 Limited
    Thanks for the advise. Mine hasn’t been done in like 20 years....On my to do list....
     
    Last edited: Jun 7, 2019
  6. Jun 8, 2019 at 7:30 AM
    #6
    sleepybear723

    sleepybear723 New Member

    Joined:
    May 27, 2019
    Member:
    #10048
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    43
    Vehicle:
    Saving up for a 2020 4runner
    I was going to say, starving for fuel somehow. (Restriction, pump, delivery) generally if timing is off you have other problems. New cap, rotors and lines to the plugs. Don’t discount spark plug lines as just a wire. Over time the copper absorbs oxygen and has increased resistance and ultimately weak spark.
     
    Fourtoad [OP] likes this.
  7. Jun 8, 2019 at 5:01 PM
    #7
    Fourtoad

    Fourtoad [OP] Gatorgrl's Yotas

    Joined:
    Apr 30, 2019
    Member:
    #9712
    Messages:
    623
    Gender:
    Female
    First Name:
    Gatorgrl
    SWFL
    Vehicle:
    1991 V6 5 speed super clean, Black and grey
    Stock with headers and after market wheels.
    The spark plug wires are new. We have a new cap and rotor on order with Toyota. Will be here Tuesday. This is an electrical gremlin because it is intermitting.
     

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