need help troubleshooting
i have a few little issues i need help troubleshooting,
1. my rangers been dealing with a lot of very cold weather,(i live in new england)
anyway the idle was rough and sometimes stalled, by rough i mean it looked like someone was shaking the truck, so i read up on it and cleaned my IAC, its better but not 100% better, idles are smooth, but still have a low idle. the truck starts at regular speed and creeps down to about 500RPM, then there are sometimes, mostly when going down hill and breaking or without pressing the gas, where the engine searches from ~200-600RPM. as the RPMs raise and lower so does the brightness on my dash and headlights. im planning on changing my fuel filter and regular maintance when my bare hand wont stick to metal.
2. when i drive the "open door" or "keys in ignition" beeps for about 30 seconds then stops, then every 30-40 minutes of driving it repeats, 30 seconds of beeps. wasnt sure if this was tied to the door sensor, or a fuse.
3. my brakes get really sensitive sometimes, usually after it sits for a while. i usually can depress the brakes a little, but then it seams to slam them on, nearly throws me through windshield.
4. lastly is while driving my transmission seams to pause while shifting sometimes, its like if you had a manual trany and kept you foot on the gas while depressing the clutch, i havent noticed any slippage though.
feel free to jump in and tell me what ya think