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truck dies with low idle

Discussion in '1st Gen Tundras (2000-2006)' started by sbrittany009, Jun 30, 2018.

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truck idles low then shuts off

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  1. Jun 30, 2018 at 7:08 PM
    #1
    sbrittany009

    sbrittany009 [OP] New Member

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    has anyone had the issue of when stopping at a stop light and your truck starts to idle low and then just completely cuts power and the check engine light and battery light comes on? i have a first gen (2003). i have to put my truck in park then turn it off and back on and it still continues to idle at like 250 rpm then it’ll jump up to 1 grand rpm.
     
  2. Jun 30, 2018 at 7:35 PM
    #2
    Casper421

    Casper421 Adventure in a 1st gen

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    Sounds like a bad alternator. Similar symptoms on my old v8 4Runner when the alternator shit the bed.
     
  3. Jul 1, 2018 at 6:45 AM
    #3
    sbrittany009

    sbrittany009 [OP] New Member

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    lthsnk you i really had no idea what if could have been so i wanted to ask it happens atleast once a day.
     
  4. Jul 1, 2018 at 6:51 AM
    #4
    Professional Hand Model

    Professional Hand Model Fred Brookes

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    Maybe clean your throttle body valve and your MAF sensor if those haven’t been done recently. Throttle body takes about 1/2 hour to partially remove and spray with cleaner. MAF is a 5 minute job. Youtube is your friend. Cheap easy place to start then move to alternator.
     
    sbrittany009 [OP] likes this.
  5. Jul 1, 2018 at 7:31 AM
    #5
    Nick T

    Nick T New Member

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    What is your check engine code(s). What volts do you get with the truck running from the alternator (I doubt it is the alternator but check to rule it out) ? Mileage and previous maintenance ?
    Start with the easy stuff like cleaning your MAF and throttle body as suggested, how long since tune up? New plugs, air filter, gas filter etc. Does the CEL code say it is a misfire, running lean/rich ?
     
  6. Jul 1, 2018 at 11:26 AM
    #6
    sbrittany009

    sbrittany009 [OP] New Member

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    the check engine light isn’t on when it’s running it only turns on along with the battery light when my truck dies
     
  7. Jul 1, 2018 at 11:50 AM
    #7
    Grumpy Uncle

    Grumpy Uncle Pushing string down the hall

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    Do you know if your truck is throwing codes? It sounds to me almost like M.A.F sensor is going flakey.
     
  8. Jul 1, 2018 at 1:22 PM
    #8
    sbrittany009

    sbrittany009 [OP] New Member

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    no it’s not literally itll just die off but act like it’s in ac mode it’s really weird
     
  9. Jul 1, 2018 at 2:43 PM
    #9
    Nick T

    Nick T New Member

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    Do your basic tune-up, plugs, air filter, fuel filter, clean MAF. If high mileage and truck still idles low after the tune-up change your ignition coils.
     

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