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4.0L OHV & SOHC V6 Tech General discussion of 4.0L OHV and SOHC V6 Ford Ranger engines.

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Old 09-05-2011
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Icon5 Tune Up

Wanna do a tune up what should i change for parts and lube ect?
lol also im getting pretty crappy gas milage any idea why? or recomendations? get about 10 a gal in the city not sure o the highway maybe 15.
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Old 09-05-2011
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When was the last time it was done?

Do plugs, wires, cap & rotor (if the 4.0L OHV has a distributor... I'm not sure), fuel filter, air filter, PCV....

Done any fluids lately? Besides the obvious engine and transmission fluid don't forget both differentials and the transfer case!
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Old 09-05-2011
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im not sure lol ive done like oil and tranny recently. tranny fluid was brown. lol def needed it havent changed the difs and transfer case, but def have been checking them had a rear leak so i added some and fixed the leak was a tiny hole just put a dab of jb weld on it as a temp fix till i can get a new cover other than that i orded a new belt needs one for sure this ones getting really cracked ive had the truck 2 months now not sure what the other guy has done to it and when :( what i hate about buying used car/trucks
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Old 09-05-2011
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and i think it has a coil pack or something
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Old 09-05-2011
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If it has a coil pack then you definitely won't need a cap and rotor!
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Old 09-05-2011
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lol ic thanks for all ur imput :)
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Old 09-05-2011
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Clean the MAF
Change the upstream 02's, make sure you buy the right tool to do it. A 7/8 wrench wont get it if they are seized up.

If you are running larger than stock tires they will hurt the mileage pretty good. The truck was rated for 16/18 I get about 17 city in the summer and closer to 12 in the winter.
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Old 09-06-2011
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yea the tired that were on it were a bit bigger they were 245 75 16 the ones on it now and the stock ones are 235/70 16 lol
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Old 09-06-2011
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245's are stock on my truck, check the door tag it will list the correct size. If you are running to small it will throw your mileage off along with the speedo.
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Old 09-07-2011
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Has anyone heard anything good or bad about the Pulstar Iridium Spark Plugs? Are they worth the money?
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Old 09-07-2011
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E3's seem to have results, they are pushing dyno numbers and mileage pretty hard in the ads.

IMHO, save your cash run a copper plug and change it every 20k.
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Old 09-07-2011
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Thanks. I haven't found a parts store yet that knows anything about them. But they are 12.99 a plug. I also need to change my plug wires. Any suggestions?
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Old 09-07-2011
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yea i checked it today it is 235 lol idk why seems off
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