I have a 97 F150 4.6 4x4. I have posted on this subject before. As I come to a stop sign the rpms drop below 300 and the truck almost stalls. I can give it gas and it slowly regains its rpms and takes off fine. It idles fine after it drops. When this all started a couple months ago, I had just cleaned my K&N filter, and I received a lean bank 2 code. I haven't received a code since but it still continues to partically stall. This is what I've done: Cleaned the MAF twice with non-residue elect. contact cleaner, replace both front O2 sensors, replaced the PCV valve (the old one was still good), and replaced the fuel filter. Should I try to clean the MAF with a q-tip and the contact cleanler? Help please. I don't want it to finally die and I won't be able to get it started.

 

Have you checked your Idle Air Control Valve?

 

Checking that tonight. I was told to clean with carb cleaner.