Today the MIL appeared on dash. Code was P0202 - Open or shorted condition detected in control circuit for injector No. 2. I checked injectors with Ohm meter and all read 12ohms. Upon acceleration the miss dissappears. At idle I pulled the #2 spark plug boot from plug and fire was present, and no change in idle speed. I fastened #2 back and pull #1 with same result. Definite change in idle when #3 & #4 were pulled. Next, I put a long screwdriver to my ear to listen for injector pulses for each cylinder. All 4 injectors seemed to be clicking.
None of this makes sense. The owner said car ran fine until it just died traveling 70 mph. I am almost certain that these engines are "safe" in case of timing belt failures. I've replaced atleast 4 timing belts on same make and model Neon, as well as many other makes in the past and never experienced anything like this. Injector wiring harness appears fine, and were never disturbed upon repair.
Thanks so much for your advice and suggestions.
Tuesday, December 22nd, 2015 AT 2:33 PM