Cold Temps Idling/EBPV
Thread Starter
|
Posting Guru
Joined: Dec 2010
Posts: 1,153
Likes: 0
From: Boston, MA
Cold Temps Idling/EBPV
I was up in the White Mountains of New Hampshire this past (cold) weekend doing some skiing at Cannon Mountain. I was sitting in my truck eating my breakfast because the lodge was mobbed with 7-14 year old ski racers, with my truck running for a little bit of heat. It was about 15 degrees out, and my truck would kick up to a high idle and the EBPV would kick on. I have a 3-1/2" downpipe with 4" straight exhaust after, so needless to say she sounds like a commercial leaf blower. With families walking past in the crowded parking lot, I felt a little bit bad for them so I'd just keep tapping the brake to bring her back down to low idle with the EBPV off (open?)
This got me thinking about the purpose of the EBPV in this situation. Is it to get the engine warmer, or is it bad to run at such low temps with the EBPV off for an extended period of time? I guess I just want to know what the computer is thinking under the hood, and why she does what she does...
Thanks all...
John
This got me thinking about the purpose of the EBPV in this situation. Is it to get the engine warmer, or is it bad to run at such low temps with the EBPV off for an extended period of time? I guess I just want to know what the computer is thinking under the hood, and why she does what she does...
Thanks all...
John
Cargo Master
Joined: Feb 2010
Posts: 2,298
Likes: 94
From: Delta, CO
I believe I've heard that extended idle time with a cold engine risks having the wet stacking. That's the unburnt fuel hanging up (stacking) on the valves that could lead to the piston striking the valves. That's why the idle is controlled by the engine oil temp among other things.
Elder User
Joined: Oct 2007
Posts: 935
Likes: 1
From: Bowling Green, KY
The purpose of the EBPV is to help warm the engine to normal operating temps. When it is at operatinng temps the truck will continue to engage the EBPV while idleing to prevent wet stacking. Wet stacking occursd when the engine idles to cool. It is when unburned fuel builds up in the valve and injectors
Thread Starter
|
Posting Guru
Joined: Dec 2010
Posts: 1,153
Likes: 0
From: Boston, MA
That's great info, thanks guys. What I ended up doing was just resting my boot on the pedal around 1100 RPM, which got me thinking...which will bring this thread on a totally different tangent...but is there a way to get the cruise control to work while in park? What I mean is, is there a way to set the cruise control to hold the engine at a specific RPM, or did I just post up a million dollar idea for somebody to steal?
Cargo Master
Joined: Feb 2010
Posts: 2,298
Likes: 94
From: Delta, CO
That's great info, thanks guys. What I ended up doing was just resting my boot on the pedal around 1100 RPM, which got me thinking...which will bring this thread on a totally different tangent...but is there a way to get the cruise control to work while in park? What I mean is, is there a way to set the cruise control to hold the engine at a specific RPM, or did I just post up a million dollar idea for somebody to steal?
Thread Starter
|
Posting Guru
Joined: Dec 2010
Posts: 1,153
Likes: 0
From: Boston, MA
*or people who dont want to use a tuner slot just for high idle
Last edited by Rose Clifford; Feb 7, 2011 at 01:00 PM. Reason: clarification
Postmaster
Joined: Dec 2008
Posts: 3,340
Likes: 2
Trending Topics
Hotshot
Joined: Jul 2008
Posts: 12,782
Likes: 2,142
From: N.GA Mountains
Technically, the term 'wet stacking' refers to 2 stroke diesels and the effects are much more severe - but the cause of the problem is similar - incomplete combustion. For us, this means coking in the combustion chamber and exhaust valves.
I would never idle at 600rpm for very long - especially if its COLD outside. Even using 1100rpm hi-idle, EOT and combustion chamber temps fall very low im the coldest weather. As far as EBPV, I'd like to activate it more often than PCM does... Imho, it is necessary for fast warm-up AND extended idling like you described.
If the noise is a problem, park further away!!
I would never idle at 600rpm for very long - especially if its COLD outside. Even using 1100rpm hi-idle, EOT and combustion chamber temps fall very low im the coldest weather. As far as EBPV, I'd like to activate it more often than PCM does... Imho, it is necessary for fast warm-up AND extended idling like you described.
If the noise is a problem, park further away!!
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Thread Starter
|
Posting Guru
Joined: Dec 2010
Posts: 1,153
Likes: 0
From: Boston, MA
Technically, the term 'wet stacking' refers to 2 stroke diesels and the effects are much more severe - but the cause of the problem is similar - incomplete combustion. For us, this means coking in the combustion chamber and exhaust valves.
I would never idle at 600rpm for very long - especially if its COLD outside. Even using 1100rpm hi-idle, EOT and combustion chamber temps fall very low im the coldest weather. As far as EBPV, I'd like to activate it more often than PCM does... Imho, it is necessary for fast warm-up AND extended idling like you described.
If the noise is a problem, park further away!!
I would never idle at 600rpm for very long - especially if its COLD outside. Even using 1100rpm hi-idle, EOT and combustion chamber temps fall very low im the coldest weather. As far as EBPV, I'd like to activate it more often than PCM does... Imho, it is necessary for fast warm-up AND extended idling like you described.
If the noise is a problem, park further away!!
It's not really a problem, I just felt kind of bad for the little kiddies and mom's walking by...but my truck's health is on the line they can deal with it from now on. Thanks for all the info.
Post Fiend
Joined: Feb 2002
Posts: 10,600
Likes: 3
From: Carhenge
Ford offers an auxiliary idle control module for just such a situation.
Lead Driver
Joined: Jan 2007
Posts: 6,708
Likes: 5
From: Kiowa CO
That was my thought as well. You can find them on ebay every now and them for $100 or so. The truck is hard-wired for the unit also.
Thread
Thread Starter
Forum
Replies
Last Post
bad ass diesel
1999 - 2003 7.3L Power Stroke Diesel
4
Jan 30, 2007 06:11 PM
