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2.9L & 3.0L V6 Tech General discussion of 2.9L and 3.0L V6 Ford Ranger engines.

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  #1  
Old 05-22-2007
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I need more help with my truck >.>

I'm at my wit's end trying to figure out what's wrong with my truck... Same as before but now I've done more.

Problems:
-Guzzles gas (getting about 12mpg, supposed to get 18)

-When for the first time, it will idle extremally rough, down around 200 rpm for 5-10 seconds, if I step on the gas while it is stumbling, nothing happens. After a few seconds it will revv up to about 1200 rpm and sit there until I step on the gas and go.

-Lost a LOT of power... Revvs normally but is lacking power

-NO smoke, white, black, grey...

-No coolant/water/anything besides oil in the oil

-No accidents/damage

Fixes:

-New fuel filter
-Newish plugs and wires
-Recent oil change
-Seafoamed through vacuum lines, intake, oil, and gas tank
-Cleaned MAF Sensor
-New Air Cleaner

It sounds like the air/fuel mixture is off maybe? Like it's getting fed wayyy too much gas? Or what else should I check/fix?
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  #2  
Old 05-23-2007
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How did you cleaned the MAF?...
Did you overheated the engine recently?
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  #3  
Old 05-23-2007
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Sounds like dirty fuel injectors.I have a 93 dodge that doesn't get driven hardly at all , just sits most of the time. Condensation built up in the gas tank and worked it's way into the fuel line where it has rusted the inside of the steel line after the fuel filter. The rust is flaking off and builds up in the injectors.I have to take them out 2-3 times a year and clean them with carb/choke cleaner.
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  #4  
Old 05-23-2007
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I've put multiple treatments of fuel injector cleaner through my truck from various approches, none help in the least... If it was the injectors, it's at least help a little with the cleaners? There's been no improvement at all from the cleaners.
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  #5  
Old 05-23-2007
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Ok, I just changed my oil and in 3,000 miles my little guy has burned almost a whole quart of oil. I won't say it's the first time it's happened, but it's the first time I've noticed it and I change every 3,000 miles and I'm pretty observant.

There was no coolant or anything besides oil in the oil.

WTF is going on?!
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  #6  
Old 05-23-2007
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Sounds like your rings are worn.... Buring oil is usually caused by worn rings.... I was also going to suggest o2 sensors, when they go bad, so does mileage...

Oh and if you are burning oil that can clog the cat, which will also cause loss of power, worse mileage and the engine to run hotter....
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  #7  
Old 05-23-2007
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I just sat and listened to the truck idle... It sounded like it was skipping and the block was shaking a lot.

Maybe I should just take it into the shop
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  #8  
Old 05-23-2007
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Maybe a mis fire? Any codes?
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  #9  
Old 05-23-2007
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No CEL but I'm fixing to take it to see if any codes come up
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  #10  
Old 05-23-2007
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Oh ok... Keep me updated, I am interested to see wtf the problem is....
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  #11  
Old 05-23-2007
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Well shoot. I just got back from Autozone, and they can't pull codes from a 1994, but the guy told me if there was a code to pull, there'd be a CEL, which is what I was thinking.

I dunno why but maybe my truck knows I'm mad at it, it did just fine and idled nice for me at Autozone...
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  #12  
Old 05-23-2007
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i know this may sound stupid, but did you make sure your plugs were on all the way...maybe one of them is loose and not staying on the plug

that could explain the rough idle, loss of power, etc
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  #13  
Old 05-23-2007
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Yeah, I checked the plugs today, all have been in for about 10,000 miles and they all looked brand new
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  #14  
Old 05-24-2007
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Oxygen Sensors may need to be replaced, at least in regards to the poor fuel economy.
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  #15  
Old 05-24-2007
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if your engine sounds like a miss, check the plugs......they may need to be regapped or replaced......you could have a dead plug also causing a miss........

a miss would cause your truck to run rough and not get the milage you are used to....
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  #16  
Old 05-24-2007
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Plugs, wires. Vacuum leak. Unmetered air leak. Mass air meter contaminated or defective. Fuel pressure incorrect.

You can retrieve trouble codes from a 94 EEC-IV PCM without a special puller: http://www.troublecodes.net/Ford/
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  #17  
Old 05-29-2007
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check your egr valve
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  #18  
Old 05-29-2007
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i cracked a plug once putting it in, ran like shat until i thought about what that snap noise was.
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  #19  
Old 05-30-2007
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UPDATE-

Replaced my 02 sensors... I'd love to meet the guy who designed the 94 Mazda B3000's sensor placement and give him the what-for...

Still shaking a LOT when idling, but it's not idleing as rough, seems to have more umph when drivng, and it sounds different, a little more deeper.

Name:  101_1338.jpg
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That's the old plug... it's totally covered in white crap, not ash, I couldn't clean it off.
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  #20  
Old 06-05-2007
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Well, today I went and tried unplugging all the spark plugs to see if the engine ran differently each time I did, and every time I tried, the engine ran rougher and it was obvious when I reved a litte that something worse was wrong... Two of the cylinders, though, when I unplugged and ran the engine, in addition to running rough there was a very loud, very distinct irregular clicking... Could that be a sign of anything?
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  #21  
Old 06-05-2007
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Quote:
Originally Posted by b3kbruiser
I've put multiple treatments of fuel injector cleaner through my truck from various approches, none help in the least... If it was the injectors, it's at least help a little with the cleaners? There's been no improvement at all from the cleaners.
Plugged fuel injectors will not always throw a code.
If they're plugged with crud from the line your only course is to pull them and clean with a can of carb cleaner.
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  #22  
Old 06-05-2007
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Hehe even I don't say stuff like that.

Check EGR son! Egr tube/valve.
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  #23  
Old 06-05-2007
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I just went out there the poke at my EGR... There is a vacuum line (I think?) That comes out the top of the EGR valve, and when I unhooked it there was no pressure of any kind, vacuum or otherwise... I suppose this is a good way to figure out I have a clogged valve or tube?
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  #24  
Old 06-05-2007
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You def got something messed up with teh plugs TRUST ME, this happened to me i changed all 6 plugs in my truck 3 times, yes 3 before i got a good set, then i had a junk wirre (brand new)....


Long story longer....18 plugs and 12 wires laters its back to normal....
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  #25  
Old 06-05-2007
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Not to sound like a jackA$$ but did you check to make sure each wire was on the correct cylinder. I mean its not like ive done that before or anything
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