engine idle and dash noise
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New User
Joined: Jul 2006
Posts: 9
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From: staten island,ny
engine idle and dash noise
I am hoping someone here can help,again,here's the newest problem:When i turn the key in my ignition I get a buzzing noise,the same type of noise you hear on family feud when they get the answer wrong,and also the engine does not idle up like it used to.Once started it would idle at say 600 rpm and then after a few minutes idle higher,it no longer idles higher.Any help or thoughts would be greatly appreciated.The truck is a 99 F350 SD 7.3 ,built in early 98,150,000 mi,no mods but regular maintenance done religiously.OH replaced glow plug relay in july new batteries and alt last september and had batteries tested 2 weeks ago and were fine,if that helps.Thanks again in advance
Postmaster
Joined: Jun 2006
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From: Brinklow Md
The engine will bump up the idle because the engines dont like to idle for long periods of time(something having to do with the oil). How loud is the buzzing? That noise might just be the glow plugs kickin in. I was told that they can do somtimes.
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New User
Joined: Jul 2006
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From: staten island,ny
its pretty loud,and my concern is that the idle used to bump up but now it doesnt,just stopped doing it the last couple of days ,i dont if they are related the noise has been going for a ew weeks and the idle just started ,I am worried it is a sign of something about to go and dont want to be at the mercy of a dealership
Post Fiend
Joined: Sep 2006
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From: Millbrook Alabama
The Idle up that you refer to is the EBPV activating and placing a slight load on the engine to speed the warm up process. this activation is controlled by the PCM with a few parameters. all the parameters are monitored by different sensors, including but not limited to, oil temp,air temp, baro, driver input(throttle or brake) coolant temp,etc...
Is the underdash noise a buzzing, or a rapid clicking(like when you turn the flashers on)
Is the underdash noise a buzzing, or a rapid clicking(like when you turn the flashers on)
Cargo Master
Joined: Apr 2004
Posts: 3,162
Likes: 1
From: Vilonia Arkansas
I have my EBPV gutted and plug disconnected and it idles up when parking brake is engaged and cold outside.
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New User
Joined: Jul 2006
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From: staten island,ny
the noise is a buzzing when you first turn the key,what is the ebpv and pcm?how do you change or fix them?
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Fleet Owner
Joined: Jun 2004
Posts: 25,090
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From: Rio Rico, AZ.
With the location that you have given as your residence, I have to say that road salt is getting into the wiring and corroding it. That will cause a lot of high resistance everywhere. That makes electronics very unhappy.
I would begin by unplugging every plug, everywhere on the truck and make sure there is not corrosion. Not even a hint of that white powder-looking stuff.
I would begin by unplugging every plug, everywhere on the truck and make sure there is not corrosion. Not even a hint of that white powder-looking stuff.
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New User
Joined: Jul 2006
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From: staten island,ny
thanks to everyone for the replies,if i do see any white stuff can i clean it with a spray? i do drive 250 miles upstate and back frequently and encounter alot of dirt sand and rock salt on the highways and roads
Fleet Owner
Joined: Jun 2004
Posts: 25,090
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From: Rio Rico, AZ.
Usually when it get's corroded like that you have to replace everything. The corrosion goes several feet up inside the insulation and turns the conductive wiring black. Basically ruins the whole wiring harness.
Big money to fix it correctly and IMO it just about totals the car without ever getting in an accident.
Here out west, no salt, and 20 year old vehicles with nice bright shiny copper wiring.
If you do find that sort of damage, I wouldn't bother with it, but rather trade it in on a new truck. If the wiring is that bad the rest of the truck will be right behind it. Steel brake lines, suspension hardware, etc.
Kind of a "get out of it while you can get some good money" situation.
Big money to fix it correctly and IMO it just about totals the car without ever getting in an accident.
Here out west, no salt, and 20 year old vehicles with nice bright shiny copper wiring.
If you do find that sort of damage, I wouldn't bother with it, but rather trade it in on a new truck. If the wiring is that bad the rest of the truck will be right behind it. Steel brake lines, suspension hardware, etc.
Kind of a "get out of it while you can get some good money" situation.
Post Fiend
Joined: Sep 2006
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From: Millbrook Alabama
Originally Posted by 1996pwrstrk
I have my EBPV gutted and plug disconnected and it idles up when parking brake is engaged and cold outside.