Question

1999 Chevrolet Camaro V6, more than one misfire and the service engine light on with code P0340 and P0147

Answer 1

The service light pick up the misfire a code it up, inspect the plug wire for voltage leakage,and sparkplugs cap and rotor,your basically in for a full tune up

Answer 2

P0340 CHEVROLET - Camshaft Position Sensor 'A' Circuit Malfunction
Read more: https://www.autocodes.com/p0340_chevrolet.html

P0147 CHEVROLET - HO2S Heater Circuit Bank 1 Sensor 3
Read more: https://www.autocodes.com/p0147_chevrolet.html