I had the Truck tested for it's annual State Emmissions Inspection today and it's a "PASS" with flying-numbers!
Being from California -- where some of the most intense Emmissions Inspection Proceedures in the WORLD are being implemented -- I was blown-away because in this State they don't perform any "Visual Inspection" other than making sure It's got a Catalyst, and the only functional-test is on the Gas Cap..."Check Engine" Lamps on pre OBD II vehicles are IGNORED... : ?
Kewl ~ I learned this Yesterday when a "Mobile Diagnositc Services" company-tech was Flashing a BCM for Me on another vehicle, and afterwards looked-up My "Ranger Problem" in His data-base...accordingly then:
"BAD" Ignition Control Modules (ICM) are the most-common cause of KOER-set OBD I DTC#224 "Coil Ckt. 1,2,3, or 4 Fault" and/or "IDM (Ignition Diagnostic Module) Ckt. Fault"... : ?
I'll bet the "Baked" Ignition Coil shorting-to-ground caused it, as I've noticed the vehicles Volt-Meter doesn't "dribble" 'n spike @ Idle like did upon arrival ~ the Truck runs rather smooth 'n strong now ~ AND it passes "SMOG INSPECTION"!
The Owner doesn't have the additional $200 bucks to replace the ICM right now, and I'm "Charitied-Out" for where we're at with it TODAY, so It's going-home "Fixed" -- at-least according to HER -- with the Check Engine lite remaining ablaze... : ?
Now I can't believe I'm actually going to put black-tape over a Check Engine lamp so the Owner-Driver won't be bothered by It... : ?
Where I hail-from that's BLASPHEMY!!!