Question about 2004 Isuzu Rodeo

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Isuzu Rodeo 2004 (Check Engine)

My 2004 Rodeo has check engine light on. Dealer said that we need to do (1) DI Decarbon with GM product and 5.00 In Gas for $389 and (2)Oil comsumption test for $207.... without knowing specific reason for check engine light, do I need to do this?? Also, that is reasonable price for those jobs?
Please advise.

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  • kensukesuke Jan 15, 2009

    Hi Thank you for your advice.

    I do not know what they are trying to do but what is this (1) DI Decarbon with GM product and 5.00 In Gas for $389? I have no clue about this....

    Thanks so much.

  • Anonymous Mar 22, 2009

    I have the exact same problem and have had for a long time. I finally found someone who could help. There's a problem in the computer that makes it go on. Hopefully - since there's a law that says anything with emmisions is 8 year or 80,000 miles I can get a new one under warranty. The problem in the computer is what makes the check engine light go on. It's not the MASS sensor that the code says it is. I only got my answer yesterday to a competent mechanic. Seems they're hard to find.

  • Anonymous Mar 17, 2014

    I tried turning the gas cap tight but that does not work



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Well, if it isnt broke, well you know the rest. As a kid in the shop we were directed to add dextron 3 to the fuel to decarbonize an engine. I have practiced this and my ford 5.8 that just hit 280,000 .. Cant say that was it, but point being it didnt hurt it. They actually make a old school fuel additive called Marvel Mystery Oil, It is Dextron 3 mostly. The oil consumption test you can do, Do a oil change , after 1000 mi. drain it and see that you have what you put in. That is what they are charging you too do. Is it worth it? umm, no

Posted on Jan 15, 2009

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NO! Go to Wal-Mart or Your local Parts Store a get a Couple of Cans of "B12 Chemtool" Add it 1 can at a time on a Full tank of Fuel. This is the SAME thing that they would do!

Posted on Jan 15, 2009

  • Travis Humphries
    Travis Humphries Jan 15, 2009

    It is Just Fuel Injector Cleaner and costs about 2 Bucks if you Buy it.


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What was the trouble code? ask the dealer and let me know, and $207 is about right for the job as long as they guarantee the job, if the check eng light comes back on with the same trouble code they will fix it for free, are they? U can de-carbon the engine yourself, it is not that hard and any shop can do it as well, it is not a service only the dealer has to do, it requires little special equip.

Posted on Jan 15, 2009

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  • yadayada
    yadayada Jan 15, 2009

    adding Chemtool is not what the dealer will do, they run a light carbon desolving oil through the intake very slowly with a special injector tool, takes about one hour to complete.

  • Linda Goldstein
    Linda Goldstein Feb 05, 2014

    at what cost?

  • yadayada
    yadayada Feb 05, 2014

    About $150.00 more in Calif or NY


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