Mileage down - suggestions?
Thread Starter
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Post Fiend
Joined: Jan 2003
Posts: 8,600
Likes: 4
From: Iowa
Mileage down - suggestions?
I have a '92 explorer with a 4.0L V6 with 187,500 miles. The mileage I'm getting is 12-13mpg in town, and 16 on the highway. My brother's explorer is getting 23 highway and 20 in town. Mine runs great, has plenty of power, more than most explorers, but the mileage sucks. Any suggestions?
Thread Starter
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Post Fiend
Joined: Jan 2003
Posts: 8,600
Likes: 4
From: Iowa
Ok, things I've tried in the last 10,000 miles:
1. Spark plugs
2. Spark plug wires
3. MAF sensor - computer code indicated
4. O2 sensor - computer code indicated
I THINK that mine has 3.42 gears, I'll check next time I'm out there. The computer is not throwing anymore codes, so I'm lost. Some days I wish this thing had a carburetor on it...
1. Spark plugs
2. Spark plug wires
3. MAF sensor - computer code indicated
4. O2 sensor - computer code indicated
I THINK that mine has 3.42 gears, I'll check next time I'm out there. The computer is not throwing anymore codes, so I'm lost. Some days I wish this thing had a carburetor on it...
New User
Joined: Nov 2003
Posts: 11
Likes: 0
It may be carbon buildup. You can try a bottle of Techron concentrate. I've heard it can clean up mild cases. My Ranger with 85K mi had a serious case of carbon buildup. The dealership charged about $90 to "decarbonize" the engine. It made a huge difference.
