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rough idle

  1. Rough Idle & pcv iss., dirty TBI, rattle noise

    Gen 8 Problems/Service Issues/Troubleshooting
    Alright so this car is turning into a nightmare. 13’ 2.4L eco. with 150k on it. I had a massive oil blow out around serpentine belt. Dealer fix $1.5k said replaced bearings too. Within 5k miles bleed out 3qts due to a “dry rotted cartridge filter cap. Oh BTW timing chain guides disintegrated in...
  2. 2016 Malibu 1.5l LT Choppy engine speed when at idle and low speeds

    Gen 9 Problems/Service Issues/Troubleshooting
    My Malibu has had an idle issue where when i stop in drive the engine will seems likes its misfiring and the engine speed will go up and down about 150-200 RPM. This only happens when the engine is cold. Just today i experienced the same thing but at around 30mph and it kept doing it as i came...
  3. 03 Chevy Malibu LS replaced fuel pressure regulator & now its worse??

    Gen 5 & 6 Problems/Service Issues/Troubleshooting
    2003 Chevy Malibu LS 3.1 V6 110,000 miles. I just replaced the fuel regulator because gas was coming out of it. Now very rough idle feels like it will stall. Sorta revs up and down on its own. It didn't have any of the common symptoms of a bad regulator except for the very strong odor. I...