GM Forum - Buick, Cadillac, Olds, GMC & Pontiac chat - View Profile: rdrose85

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  1. rdrose85
    03-05-2017 12:46 AM - permalink
    1998 Oldsmobile 88. Misfire p0301. Has been tested with a snap on scanner. #1 has misfired over 10,000 times. Have changed plugs, wires, many many coil packs. Today changed the ICM with a new one. Still misfire #1. Had previously also tried a used ICM.
    Put a new fuel injector on #1. Also put a new fuel injector regulator on the fuel rail. A few months ago, it was more of a random misfire, found a leak on the Egr tube. After that it has been #1. Yesterday the shop owner put in a new plug in #1, no change, however he did lay the spark plug on the front of the car, his helper started the car, good spark but it did get weaker under load, checked #5the same way, the spark stayed strong. Crank shaft position sensor? Have also tried used EGR valve, 2nd day had a code of po404 pop up, so I have changed it back.

    1998 Oldsmobile 88
  2. rdrose85
    03-05-2017 12:22 AM - permalink
    1998 Oldsmobile 88. Misfire p0301. Has been tested with a snap on scanner. #1 has misfired over 10,000 times. Have changed plugs, wires, many many coil packs. Today changed the ICM with a new one. Still misfire #1. Had previously also tried a used ICM.
    Put a new fuel injector on #1. Also put a new fuel injector regulator on the fuel rail. A few months ago, it was more of a random misfire, found a leak on the Egr tube. After that it has been #1. Yesterday the shop owner put in a new plug in #1, no change, however he did lay the spark plug on the front of the car, his helper started the car, good spark but it did get weaker under load, checked #5the same way, the spark stayed strong. Crank shaft position sensor? Have also tried used EGR valve, 2nd day had a code of po404 pop up, so I have changed it back.

    1998 Oldsmobile 88

About Me

  • About rdrose85
    Location
    North Carolina
    Interests
    Photography
    First Name
    Richard
    Year of your GM
    1998
    Make
    Oldsmobile
    Model
    88
    Engine Type
    3.8 v6
    Color
    green
    Modifications
    Stock
    Country of Residence
    US
    Gender
    Male
  • Signature
    1998 Oldsmobile 88

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  • Last Activity: 03-05-2017 01:00 AM
  • Join Date: 03-01-2017

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