Throttle pedal ?
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Senior User
Joined: Nov 2007
Posts: 320
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From: Southeast Idaho
Throttle pedal ?
I'm still learning all the characteristics of this truck I bought a few weeks ago and I have a question about the throttle pedal. When I bought this truck I noticed I had to move the throttle pedal about 1/2 to 3/4" before I got ant response from the engine. It bothered me at first but now I am kind of use to it. Every time someone else drives my truck they mention that to me and it has got me thinking "is this normal?"
It also gives the impression that it needs a lot of throttle to keep 75 mph on the freeway. I gave up a 6.9 IDI for this truck and just the weight of my foot would get a response out of that one. I know these are two different animals but it sure takes some getting use to.
How are all of your trucks, and if this is not normal, how do I fix it? Is there an adjustment? I couldn't see one at a glance.
Thanks
It also gives the impression that it needs a lot of throttle to keep 75 mph on the freeway. I gave up a 6.9 IDI for this truck and just the weight of my foot would get a response out of that one. I know these are two different animals but it sure takes some getting use to.
How are all of your trucks, and if this is not normal, how do I fix it? Is there an adjustment? I couldn't see one at a glance.
Thanks
Hotshot
Joined: Oct 2003
Posts: 17,799
Likes: 103
From: Ashland City, TN
Yea, that is normal.
I was annoyed at it at first. But I like it.
You can do the hotfoot mod which fixes that, but requries some modificatinos to the pedal assembly because its fly by wire.
I'm still trying to figure out what signal it sends to the engine in that "null" point, cause the engine sounds different, but its no power. Maybe just sending a little more fuel or something.
As for the pedal on the freeway.
No idea.
I was annoyed at it at first. But I like it.
You can do the hotfoot mod which fixes that, but requries some modificatinos to the pedal assembly because its fly by wire.
I'm still trying to figure out what signal it sends to the engine in that "null" point, cause the engine sounds different, but its no power. Maybe just sending a little more fuel or something.
As for the pedal on the freeway.
No idea.
Postmaster
Joined: Sep 2007
Posts: 4,195
Likes: 6
From: Medford Oregon
On the go pedal there are two items.
1. TPS = throttle position sensor
2. IVS = idle validation switch (2 wire connector)
When you push on the go pedal the IVS should disengage. Look under there and you will see a metal tab that hits the switch. That tab might be bent so you have to push the pedal more than normal for it to disengage.
1. TPS = throttle position sensor
2. IVS = idle validation switch (2 wire connector)
When you push on the go pedal the IVS should disengage. Look under there and you will see a metal tab that hits the switch. That tab might be bent so you have to push the pedal more than normal for it to disengage.
Hotshot
Joined: Jun 2007
Posts: 10,008
Likes: 7
From: Austin, TX
On the go pedal there are two items.
1. TPS = throttle position sensor
2. IVS = idle validation switch (2 wire connector)
When you push on the go pedal the IVS should disengage. Look under there and you will see a metal tab that hits the switch. That tab might be bent so you have to push the pedal more than normal for it to disengage.
1. TPS = throttle position sensor
2. IVS = idle validation switch (2 wire connector)
When you push on the go pedal the IVS should disengage. Look under there and you will see a metal tab that hits the switch. That tab might be bent so you have to push the pedal more than normal for it to disengage.
Postmaster
Joined: Sep 2007
Posts: 4,195
Likes: 6
From: Medford Oregon
If your turbo is not spooling up properly you will have to give it a lot of throttle to keep it going. When I first got my truck I experienced what you are describing. One day I took off the MAP sensor hose and blew into one end and a big chunk of gunk came out. I immediately noticed when I was on the freeway I had to actually give it much less throttle to keep speed up. And I could actually hear my turbo spool. Anyway, just a thought and an easy fix.
Thread Starter
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Senior User
Joined: Nov 2007
Posts: 320
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From: Southeast Idaho
Thanks for the advice guys, I will look into it as soon as I get the chance. I usually run about 2 1/2 to 3 pounds of boost at 75 and around 5 pounds on the slight inclines. When I pin the skinny pedal boost jumps up and the truck gains seed. It just seems like I have to hold it down to far to keep speed but I will definitely check the MAP sensor line. (Free fixes are a good thing). Just finished ditching a K&N filter and installing a 6637 mod. Wish I would have checked this thread BEFORE I went out in my shop!
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