Rough Idle in Morning?
#1
Chapter President
Thread Starter
Join Date: Mar 2004
Location: North Central Florida
Posts: 847
Likes: 0
Received 0 Likes
on
0 Posts
Rough Idle in Morning?
Is this normal? I have 43,000 miles so far and the last 1,000 I have noticed a rough idle in the morning at start up. It's never cold where I live. I change oil/filter and fuel filter every 6K.
I've also noticed my overhead lights will continually dim and brighten at the same time as the rough idle. Lately I've been using the cruise control increase in idle speed to get the truck going before I leave for work, that gets rid of the idle and dimming of lights
thanks Jamie
I've also noticed my overhead lights will continually dim and brighten at the same time as the rough idle. Lately I've been using the cruise control increase in idle speed to get the truck going before I leave for work, that gets rid of the idle and dimming of lights
thanks Jamie
#2
'People of Wal-Mart' 2010 finalist
Join Date: Feb 2005
Location: Oklahoma/Texas
Posts: 456
Likes: 0
Received 0 Likes
on
0 Posts
the dimming lights are probably the grid heater. (see grid heater thread)
rough idle when cold is just a quirk of a diesel. you might try adding an engine block heater, or covering the engine with an electric blanket at night.
just dont forget to remove it before you start the truck.
rough idle when cold is just a quirk of a diesel. you might try adding an engine block heater, or covering the engine with an electric blanket at night.
just dont forget to remove it before you start the truck.
#5
Registered User
Jaimie - this is normal. In colder temps it will idle a bit rougher until it's up to operating temp. When you first start up, the grid heaters will cycle, which is why the lights dim, and the voltmeter drops below 14. I prefer to let the truck warm up/idle/high idle until the grid heaters stop cycling and the voltmeter comes back up to normal. Some people prefer to just drive off. I know the manual recommends at least 30 seconds of idling.
PS - fuel filters last a lot longer than 6k, you might want to try doing those every other oil change if that's your interval.
PS - fuel filters last a lot longer than 6k, you might want to try doing those every other oil change if that's your interval.
#6
Chapter President
Thread Starter
Join Date: Mar 2004
Location: North Central Florida
Posts: 847
Likes: 0
Received 0 Likes
on
0 Posts
Lightman, I know I guess it's a peace of mind thing b/c my truck is how I make my money so I don't mind being a little **** about service intervals. What I've been doing is cranking the motor wait about 5 seconds then engaging the high idle to 1500rpms for 30-45 seconds or longer until I'm ready to drive off... does that sound like an acceptable routine in the morning? All this really looks like I'm splitting hairs (****) sorry. I just want to do what's best for the truck.
Jamie
Jamie
#7
Muted User
Join Date: Feb 2005
Location: "The Peoples Republic of Illinois".....behind enemy lines
Posts: 323
Likes: 0
Received 0 Likes
on
0 Posts
I've been traveling to Wellington, FL every 4 weeks since November. There have been a number of mornings that I've been down there that it has been quite chilly, though not like Illinois. And Wellington is quite a bit further south than Ocala. Try plugging her in and see if that helps. When I plug mine in, she'll start up like it's 90+ degrees out even though it may be below zero out. Or maybe our northern trucks are a bit tougher than their southern cousins!!!
Trending Topics
#8
Registered User
Jmac, I typically wait till the heater grids are done cycling - which you'll know when the voltmeter goes back up. I usually let it run for about 15 seconds before kicking it up to high idle (we're talking 0-25F though) I'm sure your truck will be fine either way - FL doesn't get that cold, and the fact you're waiting at all and taking it easy while it's cold will go a long way. I'm sure there are a ton of these trucks out there that get started and stomped on all the time and are still out there running fine..
Thread
Thread Starter
Forum
Replies
Last Post
banks twinram
3rd Gen Engine and Drivetrain -> 2003-2007
7
05-18-2010 08:10 PM
nebuniRAM
3rd Gen Engine and Drivetrain -> 2003-2007
2
08-26-2005 03:06 PM