I have a 1997 Ford Explorer XLT. It has 183,700 miles. I'm looking at buying a new vehicle, but want see if I can fix my problem before doing so.
I had the check engine light checked out and it saying my banks were lean. Cannot remember which one might been one and two? It had two lean banks and cylinder 3 and 6 misfired. The misfired could be directly related to the banks being lean. When I drive my car it kind of rides normal, but the idle is very shaky. Just like a misfired cylinder or two would do if not fired. The weirdest part is that it idles more roughly while in drive than in park. I suspected when it's idling it not getting enough oxygen or something, but when I acclerate I'm pushing more air and gas to make it run normal. I tried an engine cleaner in the gas tank few months ago when I had this problem. (Seaform) Few months ago it didn't idle as rough as it does now. I bought the same can and poured a half can into one of the intake hose (recommended by the guy at the auto store.) and white smoke came out of the exhaust pipe.
I'm still having the problem and I may pour the rest half of the can back into the engine then check all my spark plugs. All of my spark plugs and plug wires are 11 months old. The air filter is clean, I have yet to find a hole in any vacuum hose, I don't know what else to check. There got be an engine cleaner or something to flush out any deposit or build up that prevent air flow, or maybe I just need a new o2 sensor? I'm just checking for a simple fix before I jump the gun.