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1990 240 not running well without any error codes

this car runs,and allways makes it ,but it acts like it is starving for fuel
spark plugs look fine,(lean at best) new fuel filter,36-40 psi @ fuel rail,injectors seem to be working....I'm a mechanic ,but I'm at a loss at this point








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    1990 240 not running well without any error codes

    Most likely the amm. As a mechanic you know to check this part. It can be destroyed by a failing air box thermostat or just aging. I had the same symptoms and tried a used amm from a friend and voila!
    --
    92 244 lowered, Bilsteins, IPD sways, Unitek cam/header, TSW Revo 18x8's - 94 965 Niiice MONEY PIT! - 76 Datsun 280Z lowered, modified head, cam, headers, intake








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    1990 240 not running well without any error codes

    "...it acts like it is starving for fuel..."

    Exactly WHAT is your car doing?
    - engine stalling on acceleration
    - abnormally low gas mileage
    - rough idle
    - slow 0-60 times

    Does it have a manual or automatic transmission?

    Please provide a few more details...

    [[ southern fried volvo '91 240 149k mi ]]







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