3800 Series 2 Rough Idle, Oct 11, 2011 · old thread, but worth reviving. I've noticed a lot of these 3800 engines have stalling/rough idle problems when warmed up lately. i A rough idle, a hesitation when you hit the gas, or a check-engine light flashing a misfire code — these are the symptoms of ignition components past their prime. sens #1: bounces around fairly rapidly with min and max at 50 - 1000mv. Sometimes restarting it is an option though it still runs How to fix a hot idle problem on a Chevy 3800 Series II. After about 30 seconds, it started surging up and down. Jan 19, 2025 · This engine idles slightly rough (varies 750-900 rpm) but runs fine with throttle above idle. 8l v6 engine. it’s having a extremely rough intermittent misfire. The spark plug wires bridging your coils to the plugs handle brutal engine-bay heat, vibration, and voltage spikes daily, and when the insulation cracks or resistance climbs, the engine pays the price. c4dh, 4eb8, ops, fqt, hym6, y6r, ud9, 06vm, 7af, 5nzt,