I got the spark plugs and wires replaced today. The car was running really rough and the check engine light was on. (Dont know if it will come back on). Turns out the old plugs had .080 spacing and are suppossed to have .054. They looked really deteriorated. If the plug wires say 1996 on the does it mean their original? Car has 127K miles. Since I got the new plugs I decided to put the chip back in. I let the car idle for a few minutes with the chip in it and it sounded ok. Then I shifted into Reverse to go for a test drive and the car shut off. As it was shutting off the lights dimmed drastically. So I took the chip out, it now gets really close to shutting off but doesnt. When the car has the chip the fan runs earlier than with out. What is wrong with the car? Do I need a new battery?