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What Now?

This is a discussion on What Now? within the General Help forums, part of the LSx Technical Help Section category; Ok.. Have had my 98 T/A since new. Have maintained car rather well. Tuned up in summer, 140k miles, throws ...

  1. #1
    Member
    Join Date
    Aug 2006
    Location
    Michigan
    Age
    47
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    Black
    98 T/A

    What Now?

    Ok..

    Have had my 98 T/A since new. Have maintained car rather well. Tuned up in summer, 140k miles, throws no codes other than codes when I unplugged the air pump/secondary. MAF cleaned, new front 02's, PCV, Fuel pressure 58 psi. replaced thermostat last week.

    Only mod was an SLP exhaust.

    Idles great, runs great, excellent power. The exhaust is quite fuelish. I drive 90% freeway. I have a combined 18.4 mpg. I do not rag on the car or drive over 80. I was getting 24-26 combined last year.

    I have torn this car apart looking for a reason she is running rich.

    Is there a specific "tune" or scan that I could look to for an answer? I do not want to go to a dealer. I hate someone else wrenching on my car, but I think it is time.

  2. #2
    Veteran 0rion's Avatar
    Join Date
    Aug 2005
    Location
    ohio
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    22,520

    98 Formula
    06 duramax

    you took off the air injection system? do you still have cats on the car?

  3. #3
    Member
    Join Date
    Aug 2006
    Location
    Michigan
    Age
    47
    Posts
    178

    Black
    98 T/A

    Yep..

    Ordered on e from a salvage yard in summer and that one was toast. Mileage was still decent then, but got progressively worse as it got colder. Ordered a new air pump a few weeks ago and still waiting.

    With 140k on the car, do you recommend deleting the cats or replacing if I delete the secondary air? With 140k, I believe I am due for fresh cats.

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