Well, the tachometer not working is probably because of a cam sensor issue, it should not be running that bad after replacing the crank sensor. If you have the means to scan it again and still get a cam code then you can try replacing it but you might want to check the wiring harness as well if you had that many codes. All the sensors on that car have a 5 volt reference wire coming from the ECM, if that signal is missing you could possibly get a bunch of codes like that, the crank, cam, and coolant sensor should have a 5 volt reference a ground, and signal wire going back to the ECM, if any of these wires are corroded or broken you will have all kinds of problems. Do you have a multi-meter to check power with?
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Tuesday, June 26th, 2018 AT 3:20 PM