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Need some info with High rpm hestation

Discussion in '1st Gen. Tacomas (1995-2004)' started by paane12, Mar 7, 2019.

  1. Mar 7, 2019 at 8:59 PM
    #1
    paane12

    paane12 [OP] Member

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    Hello, I'm knew at this as this is my first time do something like thsi. I just installed the 2nd generation Magnuson Super Charger on my 95 Tacoma 3.4 with the 7th injector system. All purchased through URD. I also swapped out the ECM with a 97 Tacoma. One issue I have is at around 3000 rpm and up as I throttle hard there's a hesitation unless I back off and slowly throttle up through the rpm which seems to happen in 3rd gear and up. It may have happen in 2nd gear too but not so much. I cleaned the mas airflow sensor checked and triple checked the vacuum hoses, changed the throttle position sensor and I've just changed the fuel filter which was 50% plugged, it seems like it may have help a bit. Other than that power is good with no additional mods or problems. Would this be a lean out situation or is that what is meant by not enough fuel?
    If anyone has any information on this I would appreciate it very much
    Thanks
     
  2. Mar 7, 2019 at 9:07 PM
    #2
    94jdmeg6civic

    94jdmeg6civic Well-Known Member

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    What fuel pump ?
    What spark plugs ?
    What size pulley?
     
    robssol likes this.
  3. Mar 8, 2019 at 12:01 AM
    #3
    paane12

    paane12 [OP] Member

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    190 LPH Fuel pump kit that came with the 7th injector kit from UDR
    Denso ik 22 also with 7th kit
    Stock pulley that comes with supercharger
     
  4. Mar 19, 2019 at 9:55 AM
    #4
    paane12

    paane12 [OP] Member

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  5. Sep 19, 2019 at 12:29 AM
    #5
    paane12

    paane12 [OP] Member

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    Update on this issue. I found the problem. The PCU that came with the 7th injector system wasn't picking up the rpm signal. So I needed to disconnect the Black w/yellow stripe wire coming from the PCU that I connect to the IGF black w/yellow stripe going to the ECU. I needed to add a wire from the PCU Black w/yellow striped wire and connect it to the black wire on the igniter harness which is the tachometer wire number 8 pin or slot. It is located on the passengers side inner fender behind the air filter box. So in other words the PCU wasn't doing any fuel adjustments. Or that's what I think. Now I have power through out the rpm range from zero past 3000 and up. I hope this will anyone who has this problem.
     
    DrZ and robssol like this.

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