I was having some idle issues in DTW, erratic idle, high idle on startup, etc., so I pull the throttle body last night, stripped the sensors off, and gave it a good cleaning. The IAC and the IAC port were VERY nasty! It had some corrosion on the plunger head, so I wiped it carefully with a rag soaked in carb cleaner and then took out my cordless drill with a fine wire brush attachment and carefully cleaned the head. After about 5 minutes, it looked like new! :cheesy:
I reinstalled the sensors, buttoned her up and, after resetting the PCM, started her up. The idle was much better and on the highway this am the MPG is back to normal.
BUT (there's always a but), the battery is borderline. After removing the top charge, she sits at 12.4V and, with lights on, drops to 11.8V and I know this can also cause idle issues. These Optima batteries are driving me insane! They just don't hold up IMHO. But I hate battery corrosion under the hood more I guess. <sigh>
V
I reinstalled the sensors, buttoned her up and, after resetting the PCM, started her up. The idle was much better and on the highway this am the MPG is back to normal.
BUT (there's always a but), the battery is borderline. After removing the top charge, she sits at 12.4V and, with lights on, drops to 11.8V and I know this can also cause idle issues. These Optima batteries are driving me insane! They just don't hold up IMHO. But I hate battery corrosion under the hood more I guess. <sigh>
V
