I have a '96 s-10 2.2L four banger. Engine light on and codes read "random missfire". Pulled the wires with it running and found 1 and 4 cylinders not firing...changed the coils and it worked great for a week...dropped another cylinder...this time only number 1. Changed the control module and still have a dead number 1. If anyone has had this problem or if anyone knows of what to check besides plugs, wires, coils and control module, please help!