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Old 12-25-2008, 09:33 AM
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leaking turbo?

99 F250 4X4 I have been hearing a hissing sound coming from my truck while driving. cannot hear when under heavy load or at idle. has to be when driving low speeds under very little load. ran the scanner and got several codes. p0410,p1441, p0106, p0300, and p1870 any ideas
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Old 12-25-2008, 09:39 AM
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Quote:
Originally Posted by JAJOHN8213 View Post
99 F250 4X4 I have been hearing a hissing sound coming from my truck while driving. cannot hear when under heavy load or at idle. has to be when driving low speeds under very little load. ran the scanner and got several codes. p0410,p1441, p0106, p0300, and p1870 any ideas
That doesnt make sense to me, not hearing it under load but hearing it with just regular driving
You sure its not just the turbo itself doing its job?
As far as the codes go..im clueless, dont know jack about codes. A techie will chime in shortly im sure
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Old 12-25-2008, 10:06 AM
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i never heard it before and it is very loud. it will also miss once and a while when you hear the air. it is starting to get worse on the missing side of the problem.
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Old 12-25-2008, 10:16 AM
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check your ic boots. be sure to feel underneath them. sounds like you have a hole in one. same thing happened to mine a while back. common problem. its usually the one right before your turbo.
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Old 12-25-2008, 11:13 AM
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its not just the ebv closed is it ?
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Old 12-25-2008, 04:51 PM
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where is the ebv valve and how do i check it
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Old 12-25-2008, 05:04 PM
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The valve it self is in the turbine housing. It closes when your truck is cold to warm it up faster. When it closes it makes a hissing like sound, almost like you have an exhaust leak. I would also check the i/c boots too. Do you have factory inlet air setup or aftermarket ?
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Old 12-25-2008, 07:08 PM
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it is all stock. does it have a vaccum line on it with a rod coming off of it. what do i need to look for. i was a diesel mech. for about 12 yrs bot i always worked on larger trucks. this is the first i have had to work on a small diesel eng.
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Old 12-26-2008, 11:16 AM
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The vaccum line you are talking about is the wastegate line. The ebv acuator is in your turbo pedistal. There is a 2 or 3 prong connector plugged into the pedistal right underneath the turbo center section, you can try unplugging that and see if your noise goes away. If it doesnt then you could have an actual leak somewhere. I think somebody has a thread about our trucks in the winter and I believe it has a video clip of the ebv closed and what the exhaust sounds like.
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