Cylinders 2 and 3 not firing on intake side - 92 2.3 DIS
I'm hoping some of you guys could help shed some light on my problem. I have a 92 Ranger with the 2.3. It's the 8 plug DIS motor. 5 speed. New NGK plugs, wires, air filter, fuel filter, clean TB, clean MAF, clean EGR.
I had some hesitation especially with a cold motor. I get a code 224 (Ignition Diagnostic Moitor) which tells me some cylinders may not firing correctly.
I proceeded with my timing light to verify that all 8 wires were sending spark to the plugs when running, but noticed that cylinders 2 and 3 were not firing at all for the intake side. All other 6 plugs are firing correctly. I swapped the two coils to see if was a coil problem, and the same thing happenedd with the coils swapped - intake cylinders 2 and 3 were still not firing. So I know the coils are good. Tried to check all connectors, and all is okay as far as I can tell. I'm thinking it's the DIS ignition module attached to intake manifold, but not sure if this would be a symptom. Any ideas?