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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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  #1  
Old 02-08-2008
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Noise on throttle

my 95 OHV its not a problem but wondering why it does it, if your on the throttle sittin still ya don't hear it but your going down the road and your on the throttle you can hear a noise kinda hard to explain, once you let off the throttle it isn't there so I'm assuming its in the intake, I tried to remove the air filter thinking it could be something that simple and drove short distance not even a mile and with no air filter noise was still there, anyone else have had this? If so was there a fix or is that just common on the 95 OHV the 96 doesn't do it and neither have any of my OHV's before. Thanks. and to note it seems to have great power, you floor it and get up to speed quick, I plan on changing the plugs and wires over the weekend possibly, but have my doubts that has anything to do with it.
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Old 02-08-2008
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You really need to try and describe the noise better.

Does it do it under all loads? Like sitting still power braking.. or first geat.. 2nd.. ect.


Rich
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Old 02-08-2008
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It does it in any gears, if your sitting still it isn't there it only happens when you start at prob. 15-20mph the sound reminds me of the sound of a wheel bearing rubbing but not as deep in sound, when you let off the gas its gone but as soon as you start even the slightes as long as your goin 15 or more its there. Like I said power and everything is great with it, just curious as to what that noise is and why it's there. It has 189k miles on it but has as much power as my 96 which has 136k on it. Thats why I'm assuming its somewhere in the intake, kind of afraid of hurting the motor but ya think it'd be safe to take it for a short 1 min. ride with the whole intake disconnected from the throttle body? Just to see if the noise still exists there.
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Old 02-08-2008
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Well not afraid of ruining the motor but afraid of to much dirt getting in.
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Old 02-10-2008
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Ok, I was told and looked up and looks like it could be the IAC just has dirt in it and is making it do this.
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  #6  
Old 02-14-2008
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I think i have the same problem on my 01 ranger.
It only happens when im accelerating when it gets to a higher rpm, but when I back off the throttle it goes away. I was thinking it has something to do with the transmission.
It sounds exactly like my 73 Scout when the chain in the t-case is rubbing.
(Oh yeah, my ranger is a 4.0, auto, 2wd if that helps)
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  #7  
Old 02-14-2008
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Well I tried cleaning my IAC with electronics cleaner and a QTip and it helped quiet the noise some but its still there, so I guess if I want to get rid of it completely I'm going to have to buy a new IAC. If your having what I had, try cleaning that first it don't take long there is only two bolts holding it on and an electrical wire. Just becareful if ya do this not to leave QTip residue in it (cotton).
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Old 02-14-2008
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k, ill try it rite when it stops raining.
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  #9  
Old 02-14-2008
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Lemme know how ya make out with it. Oh and afterwards ya may wanna disconnect the negative batt. terminal so the computer can reset.
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  #10  
Old 02-14-2008
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I have the same problem. Mine sounds like a gargling noise, that's how I'd describe it but my truck does the same thing as yours just like you said.. Wish I could help but I'm interested to see what you find out.
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  #11  
Old 02-14-2008
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looks like im ganna have to do it tomarrow cuz its been raining all day and hasnt let up at all.
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  #12  
Old 02-14-2008
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yeah, it isn't too fun working on a motor in pouring rain even if it is just a couple bolts.
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Old 02-14-2008
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it sucks cuz i just got rid of my little car tent things that i had sitting in the backyard cuz i never used it anymore.
that would have came in handy today.
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  #14  
Old 02-14-2008
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yea lol, I don't like getting rid of anything that deals with vehicles because I'm afraid of that happening that I'll want it or need it for a rainy day whether its literally a rainy day or just a day. lol
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  #15  
Old 02-14-2008
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yeah, i wish i was smart enough to keep stuff.
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  #16  
Old 02-14-2008
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my 01 does this too.....when i hit the gas and speed up i can hear it...but when i left off i dont hear it...and as far as i can tell it happens in all gears
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  #17  
Old 02-14-2008
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yeah, it happens at higher rpm when accelerating.
and it doesnt seem to affect anything......until one day the engine catches on fire! jk
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  #18  
Old 02-14-2008
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haha that would happen to just my luck but ya everytime i punch it i can hear it
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  #19  
Old 02-14-2008
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i have the same problem! haha that damn gargle noise pisses me off! When you work on it next, some details and maybe pics on what you did it would be great. thanks
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  #20  
Old 02-14-2008
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its most likely the IAC. i had the same problem on my 93 exploder. same motor too. try taking it off and spraying carb cleaner in the holes until the liquid comes out clear. let it dry good! put it back on. the noise should go away.
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  #21  
Old 02-14-2008
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my truck just makes a slight howling/whistling noise that only 2 other people have been able to hear in my truck. I usually hear it around 45-60 and steady throttle, and a little increase of gas will make it "squeal" for a second then go away, and backing off stops it as well.
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  #22  
Old 02-15-2008
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I found a decent write-up for cleaning the IAC if anyone is interested---
http://www.explorerforum.com/forums/...ad.php?t=84220
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  #23  
Old 02-15-2008
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The method of just spraying a cleaner in there don't always necessarily work, I did that, then I took a qtip and rubbed it in there on the sensor and got dark black grime out of it. So just spraying probably won't get much of it out.
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  #24  
Old 02-15-2008
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yep i did the same thing you did. sprayed it and used a few q-tips. it got most of the grime out. ANd there is less noise... hmmm
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  #25  
Old 02-15-2008
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yeah, doing that to mine didn't cure it alot but did minimize the sound some.
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