In an effort to get some better mileage some one suggested that I clean or replace my MAF sensor. I am not getting any CEL's but the mileage with similar driving dropped about 3MPG. I looked in my haynes manual and couldn't find it in there. I did a search here and must not have hit in the correct words because I didn't find it here. Where is this thing located and how can I tell if it is in need of cleaning or replacement? My car has 264,000 miles on it and this is the original MAF sensor.

Anyone know about these things?

 

I'm not aware of any 93 Accord having a MAF sensor. Who suggested that?

More recently there's been MAF sensors in ULEV cars (California) starting somewhere around 1998. Not until 2006 or so before MAF was common in Hondas.

 

Someone I was just asking about a drop in mileage. Both my 93 Accord and my 2001 Odyssey had a drop in mileage about 2 weeks ago that was pretty significant for both vehicles. They just mentioned to check the sensor probably because they have a newer car. My initial question to them was if they thought that the gas companies were adding more ethanol in the gas because I know that lowers mileage. Surprisingly, both cars showed an increase with this last fill up which makes me think more and more that it is a type of fuel issue.

Yet another question. Do they have to show how much ethanol is in the fuel on the pump? How high a % can they put in there??

 

I'm pretty sure ethanol can go up to some level (maybe 10%) before they are REQUIRED to label the pump.

Still, there's many areas of the country that have unusual blends of gasoline, mostly because of air quality & EPA rules. But most important, they might be in the middle of switching over to "winter blend" right about now.