Check engine came on, finally got around to hooking it up to the ol' Icon T7 and read the codes, I didn't write them down, which I should have. Nothing was active, but showed it had failed prior and passed. Cleared all the codes, took it for a 20 mile drive, no check engine light. Scanned it when I got home before shutting it off and trouble codes P0200 (Injector Circuit Malfunction) and P0261 (Cylinder 1 Injector Circuit Low) came up, but showed they'd failed, then passed and were cleared. I have experienced an occasional miss/hesitation while cruising over the mountain pass on the interstate over the past 3 weeks. I suspect these codes are the culprits. Another thing I experience while driving, I will put the car in neutral and coast when coming the 7 miles down the grade. The RPM will drop to 950ish, but randomly increase to 1250 or so, then drop back to 950. My old SC1 didn't behave this way. Could this also be caused by what is throwing the codes? I've replaced both O2 sensors, PCV, plugs, wires, MAP, cleaned the throttle body and most recently the cracked hose bib that runs from the head to the firewall. I've checked the connections on the injectors as I had to remove them when I pulled the intake manifold. They're all seated nicely and the wires look good. Maybe a bad injector? I appreciate any thoughts on this.
