Ruff Idle on Cold Mornings - Ford Powerstroke Diesel Forum
 
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post #1 of 6 Old 01-26-2008, 04:29 PM Thread Starter
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Ruff Idle on Cold Mornings

I'm having a problem with the engine loping at idle after a long run say about 100 miles or so. Not to bad. Going from 590- 675 rpm. In the morning when it's cold it rumps untill I put it on high idle for a minute then it stops. If I bring it to 3250 rpms it all of a sudden it tachs out to 4100 rpms. All this on the 125 hp and 150 hp tune (canned or custom). Any ideas on what going on hear. I have data logs with SCT Live Link if anybody wants to look at them.

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2003 F550 std. cab 2005 CTD NV5600
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4.88 rear
Quadzilla Commander A-Piller
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post #2 of 6 Old 01-26-2008, 05:53 PM
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post them. but I bet the timing is advanced too much with those high horsepower tuner and the truck's having a hard time figuring it out while it's cold. Going back to stock is the first thing you're gonna wanna do.

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post #3 of 6 Old 01-26-2008, 09:31 PM Thread Starter
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When I say cold I mean 70-40. What about when I rev it to 3200 and it shoots to 4150 rpms when it's at operating temps?

I tried to post them but it says "Invalid File".

[SIGPIC][/SIGPIC]
2003 F550 std. cab 2005 CTD NV5600
Gearvenders Overdrive
4.88 rear
Quadzilla Commander A-Piller
5" Straight Piped Exhaust
Custom CB and Amp Overhead Rack
Bird Meter in dash
Stargun Antenna
Amsoil Everything
Amsoil Bypass Oil Filter
Airdog Fuel System
12ft Flatbed
9400# Wet
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post #4 of 6 Old 01-27-2008, 05:05 PM Thread Starter
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[SIGPIC][/SIGPIC]
2003 F550 std. cab 2005 CTD NV5600
Gearvenders Overdrive
4.88 rear
Quadzilla Commander A-Piller
5" Straight Piped Exhaust
Custom CB and Amp Overhead Rack
Bird Meter in dash
Stargun Antenna
Amsoil Everything
Amsoil Bypass Oil Filter
Airdog Fuel System
12ft Flatbed
9400# Wet
oxman202 is offline  
post #5 of 6 Old 01-27-2008, 05:43 PM
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well im thinkin along the lines of an icp sensor , is there any codes at all, icp would be my first guess

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post #6 of 6 Old 01-27-2008, 08:02 PM Thread Starter
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No codes. I do have some logs for Live Link though.

[SIGPIC][/SIGPIC]
2003 F550 std. cab 2005 CTD NV5600
Gearvenders Overdrive
4.88 rear
Quadzilla Commander A-Piller
5" Straight Piped Exhaust
Custom CB and Amp Overhead Rack
Bird Meter in dash
Stargun Antenna
Amsoil Everything
Amsoil Bypass Oil Filter
Airdog Fuel System
12ft Flatbed
9400# Wet
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