Where's my air filter

I have a strange question here, I have a 1990 Ford Explorer and was looking under the hood the other day after hearing one of those commercials about
how much gas you're wasting if your air filter is dirty and needs to be replaced... I looked under the hood but where did they hide it? Huh...
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Hopefully you are not the original owner of the vehicle, because otherwise it sounds like your air filter has not been replaced in 15 years.... Look for a black box, connected with a large diameter (3" or so) hose to the top of your engine. Not sure about the 1990 model, and not sure if it's the same for all engines (you didn't provide that info), but it's probably in the front passenger corner of your engine compartment. And you know what? Your user's manual will have the exact information, including how often to replace it -- with a picture to boot!
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Didn't they start building explorers in 1992 ???????
Anyways, just in case it is a typo , its that round plastic thing behind your r.h. head light There is a clamp around it that you open, pull it up and pull out a paper shaped cone If car is a lot newer it might be a flat square paper thing
good luck

looking
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You're probably way overdue on the filter change but what "they say" is a lie. It DID make a big difference in carbureted cars
The average driver ( who rarely puts the pedal to the floor) wont notice a dam bit of difference... BUT dirty air filters lead to dirty MAF sensors and THEY will cause performance problems.
And gonzo plugs wont give you 10% better mileage, either. If they did, wouldnt the Mfrs use them in the first place?
Neither will the "Air Spinners" you see on late night commercials..If they did, wouldnt the Mfrs use them in the first place?
And when they talk about tire inflation and mileage, they're talking about BIAS ply tires which no one in their right mind buys anyway... even if they can find them. Of course with an explorer, you keep s your inflted properly anyway, unless you have a death wish.
Sidenote: Once saw a "professional" demonstrate how driving 55 saved 15% on gas compared to driving 65.
He did it on a small road course track with a corner coming up every few hundred feet. IOW, he was a liar.
If it's "Conventional Wisdom" and you hear it on the news or a commercial, it's probably an exaggeration at the least.
But the topper was a cop on local news discussing a congested area of freeway who advised everyone using that stretch to slow down and leave more distance between cars... what a freakin' idiot!

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I decided to visit a "Break Specialist" where I normally frequent and have a friend working at, and found out why I didn't see the air breather I thought I should have been looking for, the vehicle is a fuel injected engine and it doesn't have a normal breather like a car with a carburetor. The mechanic pulled the filter out and showed me it was pretty much clean (simply needed to the small dust blown out).
Thanks for your information.

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