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Idle Speed Up When Cold

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Old Feb 10, 2004 | 07:48 AM
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GlennJenne
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Question Idle Speed Up When Cold

I have a 2000 F250SD 7.3PSD. I have noticed that when it is cool outside (less than 40) the truck will start with a normal idle (around 700rpm). While it is sitting at idle for a couple of minutes, the idle will speed itself up to around 1000. It goes back to normal idle when I touch the break pedal. Not a big deal, just wondering if this is part of the program. Thanks, Glenn
 
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Old Feb 10, 2004 | 08:06 AM
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It's normal. I believe the purpose it help the truck warm up.
 
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Old Feb 10, 2004 | 08:11 AM
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Thanks rmilchman, I thought that was probably it. I have a remote starter/alarm system and thought it might be playing with me. By the way, remote starters are great! Love it when it is cold, drink my coffee in the kitchen and start the truck!

-Glenn
 
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Old Feb 10, 2004 | 08:41 AM
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I have one also, it's a great invention.

Rich
 
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Old Feb 10, 2004 | 02:41 PM
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As everyone has said, yes it's normal. My favorite part of this feature is, when it's idled up to 1100-1200 rpm, go around and listen to your exhaust pipe. It sounds like you've got a jet engine in there!

Stacey
 
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Old Feb 10, 2004 | 02:47 PM
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Stacey, yes I did notice that. I thought it was getting ready to take off until I looked around front and saw that the landing lights were not on. Ha!

-Glenn
 
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Old Feb 10, 2004 | 03:36 PM
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For some real noise, try it without a muffler.
 
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Old Feb 11, 2004 | 06:47 AM
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Re: Idle Speed Up When Cold

Originally posted by GlennJenne
I have a 2000 F250SD 7.3PSD. I have noticed that when it is cool outside (less than 40) the truck will start with a normal idle (around 700rpm). While it is sitting at idle for a couple of minutes, the idle will speed itself up to around 1000. It goes back to normal idle when I touch the break pedal. Not a big deal, just wondering if this is part of the program. Thanks, Glenn
Yes it is part of the pcm program, it's called CAP (cold ambient package).
 
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Old Feb 23, 2004 | 11:02 PM
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From: Dixie
Originally posted by rmilchman
For some real noise, try it without a muffler.
Took my muffler off was behind the truck when it kicked in purt near took off a runnin myself
 
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Old Feb 24, 2004 | 08:07 AM
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My neighbors love me in the morning.
 
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Old Feb 24, 2004 | 09:47 AM
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i have a psd with the same thing, it also makes that loud jet noise, i read its some sort of heater system.
 
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