2004 California TJ idle speed fluctuates
My 2004 tj has an intermittent problem. At idle the rpm fluctuates. It will drop to 1 1/4 dot on the tach (400-450rpm I think). It will stay that low until you tap the gas. Idle speed goes to about normal rpm but flucuates by a needle width. I've been chasing this problem for awhile. I found a piece of metal (wire rope strand about 1 inch long) stuck to my crankshaft sensor. I remove it and replaced the sensor because I already bought one. Before changing Crankshaft sensor the jeep would stall in stop and go traffic. Now it doesn't stall but it doesn't have a smooth or steady idle. I've done a tune up, camshaft sensor, speed sensor, idle air controll module, map sensor, throttle postion sensor and up stream O2 sensors. Any idles?