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Drivetrain Tech General discussion of drivetrain for the Ford Ranger.

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  #1  
Old 01-27-2008
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problem applying power to the ground...

After wheeling this last weekend I seem to have a problem that i just cant figure out...

I am in 4Lo I take off to try and get up a hill... lots of wheel speed, lots of RPM, driving up the hill i get 1/2 or 3/4 of the way there wheel speed stops and the truck bogs down and even dies at times.

I cant figure out why it does this.

I have 4.56s and 35s, does it both in 4lo and 4hi, never had an issue in 2wd.

Other rangers with similar setups try it and they get tons of wheel speed, its like my power gets held up somewhere.

I am not sure its the tranny, had it apart this summer and everything looked good and installed some new parts, seals and shift kit.

It is almost as if the truck forgets how to down shift??

any help is appreciated, i need this fixed, it just ruins my fun. lol
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Old 01-27-2008
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is it not getting gas once you start going up the hill.
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Old 01-27-2008
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with a full tank? i doubt it. unless something with the fuel pump?
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Old 01-27-2008
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Originally Posted by zabeard View Post
with a full tank? i doubt it. unless something with the fuel pump?
that might be a possibility
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Old 01-27-2008
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does it lug or just no power? i would think if it was a fuel problem it would lug like it is starvin for fuel.... can't remember 5spd or auto, think auto... go try it again when it starts boggin stop hit neutral and peg the gas, if it still stumbles then it has nothing to do with 4wd i would think.... if it dies try to restart, if it restarts then i would think it isn't all the fuel sys...

but i'm a dumb redneck just what i would start with...
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Old 01-27-2008
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wouldnt it do it when i would just hammer on it on the street?

seems like it only happens when under a big load.
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Old 01-27-2008
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Quote:
Originally Posted by stRanger View Post
does it lug or just no power? i would think if it was a fuel problem it would lug like it is starvin for fuel.... can't remember 5spd or auto, think auto... go try it again when it starts boggin stop hit neutral and peg the gas, if it still stumbles then it has nothing to do with 4wd i would think.... if it dies try to restart, if it restarts then i would think it isn't all the fuel sys...

but i'm a dumb redneck just what i would start with...
it starts right up. if i stop soon enough it will recover and go to a smooth idle.

its only happening under a severe load.
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Old 01-27-2008
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i dunno if i would consider a hill in 4wd a BIG load.... especially in low range... i dunno...
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Old 01-27-2008
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that is a good point. idk...

NicksterSVT thinks it could be something in the Tcase.

I might pull my chip off and see what it does. No good place to test it around here though
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Old 01-27-2008
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easy way to tell for the t-case...(maybe) 4-lo hubs unlocked... still turning the front shaft... maybe i dunno... t-case i woudl think there would be a noise... again grain of salt man, but that's a weird problem... maybe check your plugs and wires... maybe something a lil loose and under load the problem becomes more noticeable?
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Old 01-27-2008
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think my gas mileage and many other things i would notice if it was a problem, right? idk
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Old 01-27-2008
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i would think... my buddy mentioned this...

the 3.0 no matter what you do is a gutless motor (my ranger has one, I know) even though you are runnin 4.56 with 35's in high traction hill climbs the motor just might not have enough *** to pull the tires.... another possibility, when i was whippin doughnuts a few months back i noticed if i slammed the truck into 2nd it woudl bog out (and this is in slick mud) are you runnin your truck in 1st or Drive? maybe the tranny is shifting and the motor bogs?
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Old 01-27-2008
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i tired 2nd and Drive.

if this was the case wouldnt the other people on the trail have the same issue?

im going with 5.13s and 37s, definitely not 4.88s
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Old 01-27-2008
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what motors, gears, tires did everyone else have?? **** my ranger has 5.13's and 37's and I want more gear, wish the previous owner had went 5.38 lol can't get enough!!!

But if the other guys had 4.0's they prolly wouldn't have the problem they have MUCH more power... but I have a feeling there might be an underlying issue somewhere, just not sure where or what man.. sorry i can't be any real help
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Old 01-27-2008
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both others 4.0s and autos

1 with 4.10s and 33s
1 with 4.56s and 35s
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Old 01-27-2008
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yea geared correctly and a bigger motor, i'm under the impression the 3.0's need to almost be over geared..... but as i said earlier there is probably an under lying issue too, i'd check your plugs and wires, tranny fluid (if low might cause the problem), tcase fluid, air filter etc.
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Old 01-27-2008
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i replaced the plugs when i did the headers this last summer. air filter is new, tcase and tranny fluid replaced this last fall. i can check the levels again.

i have the 4.0, kinda seems like you might be implying i have the 3.0? i know you have the 3.0.

i guess it could be wires. i have had the JBAs since like 30k miles. I am at 100k now
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Old 01-27-2008
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dang, for some reason I though you had toe 3.0.... DOH!! in that case, that's a weird problem, the motor shouldn't lug like that...... crud in the tank possibility?
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Old 01-27-2008
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i suppose it could be. i will have to tear into it this next weekend. i dont think it has anything to do with a hill, it likes to bog even on flat ground if its in alot of snow or mud. maybe the motor is just getting weak...
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  #20  
Old 01-27-2008
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motor better not be gettin that weak!! clogged injectors? I'd do a fuel system check... got access to a fuel pressure guage? check the pressure at the fuel rail make sure you are gettin good pressure, then maybe run some injector cleaner in your truck, check plugs wires, sensors..... if it is boggin on flat ground something is wrong somewhere
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Old 01-27-2008
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thanks i will give it a check.

i have overheated this engine a few too many times. pegged the water gauges etc. its had a hard life. lol wouldnt surprise me one bit if it died tomorrow.
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Old 01-27-2008
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ahh didn't know that, yea could be gettin tired then... water in oil? but don't think head gasket would cause that.. might just be gettin tired.... doh! new 4.o would fix it!
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Old 01-27-2008
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or 5.0

sucks man, hope you figure out yer power problem. i think i figured mine out
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  #24  
Old 01-27-2008
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A contaminated O2 sensor will cause it to run too rich, and bog down. They only last around 50-60k during regular service.
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  #25  
Old 01-27-2008
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might sound dumb but whats your airfilter look like?
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