My 2014 Buick Verano had been throwing air intake codes so I replaced the MAF sensor which got rid of the engine lights. Months later the car died (no rattling, no weird noises, just instant shutdown while driving slow). It started right back up and the mechanic replaced spark plugs, air filters, and a couple sensors. He told me the timing chain is about to go and it’ll cost me $7-10k to fix today or the car will inevitable self destruct. The car never gave me codes related to timing or engine performance.

  1. Is it possible to give this diagnosis?

  2. Is that an insane quote?

Thanks

  • badcoupe@alien.topBEnglish
    1·
    10 months ago

    Regular 2.4? Timing chain should run around 500 for the ecotec. Variable cam Timing solenoids are also common failure point in these engines and are easily replaced. If chains are loose and jump it will bend valves/break rocker arms which requires cyl head removal to replace valves etc. most shops at that point want to replace engine at that point although it’s a needless exercise to replace when the head can be easily repaired.