car idle rough at idle.have no power when accelerate.goes in limp mode as soon as I put my feet on brake padel.change ignition coils with no success.diagnose car with no success.
My car has 191000 miles.
My car has an automatic transmission.
Hello - check first for problem codes, whether the Check Engine light is illuminated or not. The change in rough running behavior when you press the brake pedal may indicate a failed brake booster. A ruptured diaphragm in the booster would make the engine idle rough, and possibly cause other "drive-ability" issues like poor power. I would recommend a rough running inspection by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, diagnose this problem, give you an accurate assessment of damage and cost estimate for repairs.
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