So my car sounds horrible the engine shakes enough to rattle the exhaust. I've only had two codes one is a cylinder 3 misfire p0303 and a knock sensor code p0327(pretty sure that's the right code number). When I hit the brakes the rpm jump up then slowly go back down same when I put it in park or neutral. I've replaced the plugs, wires, tested the ign coil and ignition control module both tested good. Replaced the fuel injector on cylinder 3 runs better(more acceleration) but still jumps rpms and still shakes. The previous owner told me he had a vacuum leak test done and ensured me there were no vacuum leaks and the hoses look good. Ran seafoam through it today and its again much better on acceleration but still the same problems. Mount looks OK although I didn't check the one underneath yet. Replaced the knock sensor and the wires all look Ok same with the connector. Any ideas?
have the same problem?
Sunday, March 6th, 2016 AT 4:15 PM