I've got a 94 80 series. Truck had been running fine. I haven't driven or started it in about two weeks. It has a CEL light for EGR temp sensor for a long time now with no issues. I started the truck and it didn't do its normal cold start high rev, it went strait to about 6-700 RPM. Has hesitation when throttle is applied. So I shut it off and crossed up the pins to see the CEL and it's just rapid flashing. I know what that means on an OBD2 car and assume the same meaning in my 94 but what's the best way to diagnose it? Is it most likely a miss fire? Plug wells are dry, My multimeter is being a POS but I'm getting "k" ohms when I test the plug wires. I've gone ahead and ordered cap, wires, and plugs from Joey but is there anything else I could check? Thanks in advance.