clogged air filter > now poor mileage - help!

Assuming that the two aren't directly connected, maybe rodent debri is lodged somewhere between the air filter box and the air intake on the engine?

- Chuck

I took the "snorkel" off to check that out and it's clean. And sprayed some throttle body cleaner which looked like it was due ... but no difference in performance or mileage. Thanx for the feedback.

Check for birds in your exhaust, Squirrels in your Injectors and bird nests in front of your radiator.

Haven't been following this thread so I don't know if you're closer to answer for the less mpg's, and I have to wonder if because of this time of year you're getting the winterized gasoline (I think they add alcohol to it) and that usually means less mpg's. Just a thought.

That's possible but while I've noticed a change with other vehicles I've owned, my previous 22R didn't seem to get worse mileage with the winter fuel (although it was the carb. model). Mileage is still down some, I'm wondering if I should look for the air flow meter and see if something is clogged, stuck, contaminated. It's on my "to do" list.

Thanks for the feedback.

I'm new to Toyota, so this will be vague... on some engines there is a temp sensor in the intake to tell the computer to adjust the fuel delivery (I'm assuming a fuel/air ratio ). So when you cleaned the filter box, and if your engine uses this type of sensor, it could have simply become unplugged. If you have a repair manual the sensor might be a thermosistor and has a resistance you can measure against a table in the manual (to see if it's still in spec). Otherwise I'd think it would be an inexpensive sensor to replace (famous last words)... (grin)

I've overdue at picking up a factory manual for the truck. Next time I get a chance I'll open the air box and look for damage, clogs, sensors etc.