Fast idle at start up
Thread Starter
|
Member
Joined: Dec 2007
Posts: 16
Likes: 0
From: Louisiana
Fast idle at start up
Hi,
I'm new to this site so forgive me if this ? has been answered before.
I have a 2005 F150 FX4 with 5.4 Triton with 40,000 miles. At start up in morning after sitting all night or for more than 4 hours or so it idles really high to about 1750 - 2000 rpm whether it's cold or warm outside. It will go down after about 15 seconds or so to about 750 or 1000. If I put it in gear at 1750 it drops down. Is this normal? What can be causing this? Can this damage the engine? It's got to the point where I'll start the truck and let it idle back down before shifting. I know it's only 15 -20 seconds or so, but it's aggravating.
I also have the Hypertech Programmer. I don't know if that has anything to do with it.
I'm new to this site so forgive me if this ? has been answered before.
I have a 2005 F150 FX4 with 5.4 Triton with 40,000 miles. At start up in morning after sitting all night or for more than 4 hours or so it idles really high to about 1750 - 2000 rpm whether it's cold or warm outside. It will go down after about 15 seconds or so to about 750 or 1000. If I put it in gear at 1750 it drops down. Is this normal? What can be causing this? Can this damage the engine? It's got to the point where I'll start the truck and let it idle back down before shifting. I know it's only 15 -20 seconds or so, but it's aggravating.
I also have the Hypertech Programmer. I don't know if that has anything to do with it.
Senior Member
Joined: Aug 2006
Posts: 578
Likes: 0
Originally Posted by jason-br
Hi,
I'm new to this site so forgive me if this ? has been answered before.
I have a 2005 F150 FX4 with 5.4 Triton with 40,000 miles. At start up in morning after sitting all night or for more than 4 hours or so it idles really high to about 1750 - 2000 rpm whether it's cold or warm outside. It will go down after about 15 seconds or so to about 750 or 1000. If I put it in gear at 1750 it drops down. Is this normal? What can be causing this? Can this damage the engine? It's got to the point where I'll start the truck and let it idle back down before shifting. I know it's only 15 -20 seconds or so, but it's aggravating.
I also have the Hypertech Programmer. I don't know if that has anything to do with it.
I'm new to this site so forgive me if this ? has been answered before.
I have a 2005 F150 FX4 with 5.4 Triton with 40,000 miles. At start up in morning after sitting all night or for more than 4 hours or so it idles really high to about 1750 - 2000 rpm whether it's cold or warm outside. It will go down after about 15 seconds or so to about 750 or 1000. If I put it in gear at 1750 it drops down. Is this normal? What can be causing this? Can this damage the engine? It's got to the point where I'll start the truck and let it idle back down before shifting. I know it's only 15 -20 seconds or so, but it's aggravating.
I also have the Hypertech Programmer. I don't know if that has anything to do with it.
I have no experience with a tune. My only guess it you get the higher, "warm up" rpm's because of this. Take the 15-20 seconds to enjoy the good roast from the coffee beans and have a great day!
