Van rumbling bad. Change the spark plug both 02 sense egn cord but still running bad. Light still stays on
My car has 276000 miles.
My car has an automatic transmission.
What problem codes are set that are causing the Check Engine light? The engine may be running in "limp mode". There are many sources of poor performance, including a clogged catalytic converter, given the advanced mileage on this vehicle. But - knowing what codes are being set will provide the best guidance. I would recommend a loss of power inspection from YourMechanic to diagnose the problem, get an accurate assessment of the damage, and estimate the cost for repairs.
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