My truck sounds like it has a turbo. - Ranger-Forums - The Ultimate Ford Ranger Resource


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  #1  
Old 10-01-2007
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My truck sounds like it has a turbo.

I wish it did. Lately it makes a high piched whisle when under load or medium to hard acceleration. Can be heard very well from inside the cab.

I just replaced the IAC the other day, hoping maybe that was it. Didn't help the noise. It does feel alittle stronger now though. Alot smoother.

Besides taking it to the shop, I have no idea what else to do. Any thoughts?
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  #2  
Old 10-01-2007
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take it to a shop....let them tell you what the problem is and then fix it yourself...ive done this a few times.
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  #3  
Old 10-02-2007
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Fan clutch?

Did you USED to hear this same tone for the first few hundred feet of driving after first start up? Then it would quickly go away? If so, your fan clutch may be staying engaged.

Spin the fan by hand with a cold engine. Repeat after a short drive. It should spin easier by hand after warm-up.
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  #4  
Old 10-02-2007
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Could be a small vacuum leak somewhere.
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  #5  
Old 10-02-2007
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I checked my fan, it's Ok. I would love to replace it with an electric unit. Right now I'm leaning toward a vaccum leak.
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  #6  
Old 10-02-2007
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Cold air intake? mine whistles when i accelerate...

my guess is a vacuum leak if you have no CAI
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Old 10-02-2007
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I see you have the 'airbox' mod.. that could have done it..

I know my truck does that, and it started to do that after I put the intake on
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  #8  
Old 10-03-2007
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Yeah...I did the airbox mod years ago. This just happended the other day.

Vaccum leaks are hard to find. I'm taking it to my local repair shop. Might have him run a full system check with the scan tool while it's there. Thanks to all.
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  #9  
Old 10-03-2007
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my 93 did this and it sounded like a S/C for only 5 sec.s then I lost all my power(AC, Power steering, etc...) it sucked... think they said clutch fan froze...
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  #10  
Old 10-03-2007
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could be a dirty throttle body. be careful what you clean it with, but it could have carbon built up in it causing it to whistle.
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  #11  
Old 10-03-2007
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if its a whine like a S/C, if could be your alternator
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  #12  
Old 10-03-2007
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Quote:
Originally Posted by 07Ranger
if its a whine like a S/C, if could be your alternator
Or belt tensioner, but those both whine/squeel/yell.....he's gotta be hearing something intake/vaccum related.

K&N intake and TBspacer sound like a turbo on mine. it's actually quite funny playing with the throttle.
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  #13  
Old 10-13-2007
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probly vaccum leak
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  #14  
Old 10-28-2007
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to check for vac. leak.....

1) start truck, let idle
2) spray starting fluid on/around vac. lines, one by one, you will hear the idle surge when you hit an opening in the line.
3) do not do this if you have arching plug wires!!!
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  #15  
Old 11-07-2007
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Truck went to the shop today. He has a smoke machine and used it it find the leak. Turns out my throttle body is cracked and leaking. This could also be the cause of my lower MPG that I have been getting lately.

Anyway....$260 for the part. I could install it myself, but I'll let him that way if something goes wrong it's not my fault. Can't wait to get it fixed. Part will be in Friday. I'll fill up with $3.05 gas and go on a road trip this weekend. Thanks for all the input, I never would have thought it would be the throttle body.
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  #16  
Old 11-07-2007
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damn thats gay because my truck does the same thing ,i hope he showed u the crack
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