3 second cycle to very lean afr 18:0 results from cleaning maf and air filter - Miata Turbo Forum - Boost cars, acquire cats.

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Old 11-13-2012, 09:42 AM   #1
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Default 3 second cycle to very lean afr 18:0 results from cleaning maf and air filter

Ok guys so I cleaned my dirty air filter and maf with special cleaner made for it. Now when I cruise at certain speeds or engine loads it goes from a good afr to very lean the goes back, it does this at certain speeds. Engine temp is staying between a quarter and a little under half on the gauge. It didn't do this before I cleaned the maf. I disconnected the battery on the way home then hooked it back up and ran perfect on the way home. However, this morning it started doing it again on the way to work. I can feel a slight power loss when it goes lean then all power comes back within a split second. I'm going to try unhooking the battery and unhooking the maf but beyond that I really don't know. Seems like a closed loop tune problem
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