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2001 3.4 V6 won't start after MAF replacement

Discussion in '1st Gen. Tacomas (1995-2004)' started by McSaucyWalrus, Mar 7, 2017.

  1. Mar 7, 2017 at 12:10 PM
    #1
    McSaucyWalrus

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    McSaucyWalrus [OP] Well-Known Member

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    I have a 2001 3.4 V6 TRD that had a stuttering issue at idle and under power a few months ago. I replaced the spark plugs and wires with new NGK stuff and replaced the fuel filter and cleaned the throttle body IAC and MAF. Also redid all the grounds on the engine block. The truck ran great for a few months and then it started stuttering again. So I bought a new Duralast MAF from auto zone and hooked it up. After install I cannot get the truck started. It will crank but not start. To see if it was just the new MAF i put the old one back in and it still won't start but still cranks. Any help would be great.
     
    McSaucyWalrus, Mar 7, 2017
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  2. Mar 7, 2017 at 12:17 PM
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    cruiserguy

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    cruiserguy Well-Known Member

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    Check for a blown fuse and double check any electrical connections you undid when you swapped in the new MAF.
     
    cruiserguy, Mar 7, 2017
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    DustStorm4x4 likes this.
  3. Mar 7, 2017 at 1:41 PM
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    wht95scort

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    wht95scort Well-Known Member

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    Check for spark. Could be a bad igniter.
     
    wht95scort, Mar 7, 2017
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  4. Mar 7, 2017 at 8:34 PM
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    Xbeaus

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    Xbeaus Well-Known Member

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    Also - may sound dumb but I did it once. Installed the maf backwards. I have a 98 so might be different than an 01.
     
    Xbeaus, Mar 7, 2017
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    TacomaJunkie8691, Brice and DustStorm4x4 like this.
  5. Mar 7, 2017 at 8:38 PM
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    Xbeaus

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    Xbeaus Well-Known Member

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    Duralast maf sensor could be a bad one. I'd take it back and try another one. See if it replicates the problem. It's hit and miss with non OEM on maf sensors.
     
    Xbeaus, Mar 7, 2017
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  6. Mar 7, 2017 at 10:51 PM
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    gearcruncher

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    gearcruncher Well-Known Member

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    Did you also clean the throttle body ? Dont forget to remove the battery posts before starting the truck . Idle re-learn procedure
     
    gearcruncher, Mar 7, 2017
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  7. Mar 8, 2017 at 7:40 PM
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    McSaucyWalrus

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    McSaucyWalrus [OP] Well-Known Member

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    The MAF cant be installed backwards

    I reinstalled the OEM MAF and the engine still wouldn't start. Also the MAF I bought was a "new" unit, not a remanufactured one.

    Yep, cleaned the throttle body, also disconnected the battery before doing anything.
     
    McSaucyWalrus, Mar 8, 2017
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  8. Mar 8, 2017 at 7:41 PM
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    McSaucyWalrus

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    McSaucyWalrus [OP] Well-Known Member

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    I'll check for blown fuses next. Thanks for the replies
     
    McSaucyWalrus, Mar 8, 2017
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  9. Mar 8, 2017 at 8:20 PM
    #9
    Xbeaus

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    Xbeaus Well-Known Member

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    I have the jet turbine looking one. It can! Glad that wasn't it on your taco :)
     
    Xbeaus, Mar 8, 2017
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  10. Mar 10, 2017 at 11:52 AM
    #10
    McSaucyWalrus

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    McSaucyWalrus [OP] Well-Known Member

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    Well I got it to start. The igniter wasn't plugged in all the way....:anonymous:

    But that didn't solve my fuel stuttering issue...
     
    McSaucyWalrus, Mar 10, 2017
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  11. Mar 10, 2017 at 12:04 PM
    #11
    Xbeaus

    #11
    Xbeaus Well-Known Member

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    How old is your fuel filter? Good idea to replace anyway but seems odd it still stutters after your tune up.
     
    Xbeaus, Mar 10, 2017
    #11
  12. Mar 10, 2017 at 12:19 PM
    #12
    McSaucyWalrus

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    McSaucyWalrus [OP] Well-Known Member

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    I replaced the fuel filter in december when was first looking for the problem.
     
    McSaucyWalrus, Mar 10, 2017
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  13. Mar 10, 2017 at 12:24 PM
    #13
    Xbeaus

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    Xbeaus Well-Known Member

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    Damn Gremlins. With no CEL lights it's hard to determine. Might try and test fuel injectors and/or compression.
     
    Last edited: Mar 11, 2017
    Xbeaus, Mar 10, 2017
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