part throttle mod?
Thread Starter
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Tuned
Joined: Oct 2003
Posts: 390
Likes: 0
From: Maine
part throttle mod?
I have the 6 speed, and when going over bumps, especially with the horse trailer on, it is hard to maintain an even throttle pressure. Has anyone ever modified the throttle to give it less response, and therefore less "jumpy"?
I got to thinking about it, and that would be very handy, not only when going over bumps, but also when backing the trailer into place. I have searched for this type of mod, but don't see much out there. I picture a switch with a bright indicator light to let me know that it is on.....
I got to thinking about it, and that would be very handy, not only when going over bumps, but also when backing the trailer into place. I have searched for this type of mod, but don't see much out there. I picture a switch with a bright indicator light to let me know that it is on.....
Senior User
Joined: Jun 2007
Posts: 193
Likes: 0
From: Springfield, VA
I just let off the throttle when going over bumps. It also helps if you plant your heel on the floor as you go over the bump.
As for backing up, just slip the clutch some. You shouldn't really be giving it any throttle until the clutch is fully released anyway (IMO). I never use any throttle when backing trailers.
As for backing up, just slip the clutch some. You shouldn't really be giving it any throttle until the clutch is fully released anyway (IMO). I never use any throttle when backing trailers.
Fleet Owner
Joined: Jun 2004
Posts: 25,090
Likes: 1,111
From: Rio Rico, AZ.
Are you talking about the "hitching" that happens whenever a truck and trailer combo go over bumps?
Not much you can do about that, even with your foot off the throttle.
Is your horse trailer a gooseneck?
As far as backing up the trailer, I always slip it into 4wd Low.
Makes it very easy to back up, nice slow and easy. Just let out the clutch and creep backwards.
Not much you can do about that, even with your foot off the throttle.
Is your horse trailer a gooseneck?
As far as backing up the trailer, I always slip it into 4wd Low.
Makes it very easy to back up, nice slow and easy. Just let out the clutch and creep backwards.
Senior User
Joined: Jun 2007
Posts: 193
Likes: 0
From: Springfield, VA
I've done that as well, but I've tried to avoid it when on pavement. I've always heard it's not advised to have a truck in 4x4 on pavement. Opinions?
Fleet Owner
Joined: Jun 2004
Posts: 25,090
Likes: 1,111
From: Rio Rico, AZ.
Yes the front axle will turn, but the front hubs freewheel, so you'll never bind up your driveline.
A fully functioning ESOF system will bind up so you'll want to put your hubs in manual unlock first.
I would run that way anyway if I had that and only put the hubs in Auto when the bad weather hits.
Thread Starter
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Tuned
Joined: Oct 2003
Posts: 390
Likes: 0
From: Maine
Yes, the hitching. It is a bumper pull, right around 7K. Even without the trailer, it can be a little obnoxious to maneuver with throttle, especially in low range. My F150 modifies the throttle when it is in first gear, giving you about half the throttle response. That takes away a lot of the "jumpiness".
Between the driveline slop and the stiff suspension on the 250, it's hard to keep steady. I can definitely idle out the driveway, but the growling of the tranny tends to get me some funny looks...
Doesn't seem, with the drive by wire system, that it would be difficult to insert some resistance to lower the sensitivity of the pedal. However, it's been quite a while since I have done any electronics, and didn't want to fry anything. Yet.
tsmall, do you have ESOF? if so, you probably don't want to go into 4lo on pavement. I have manual hubs and transfer, so I drop it into 4lo, but don't lock in the hubs.
Between the driveline slop and the stiff suspension on the 250, it's hard to keep steady. I can definitely idle out the driveway, but the growling of the tranny tends to get me some funny looks...
Doesn't seem, with the drive by wire system, that it would be difficult to insert some resistance to lower the sensitivity of the pedal. However, it's been quite a while since I have done any electronics, and didn't want to fry anything. Yet.
tsmall, do you have ESOF? if so, you probably don't want to go into 4lo on pavement. I have manual hubs and transfer, so I drop it into 4lo, but don't lock in the hubs.
Fleet Owner
Joined: Jun 2004
Posts: 25,090
Likes: 1,111
From: Rio Rico, AZ.
Hmmm, I guess my truck is not having that problem.
Stock tune is very "maneuverable" in that the throttle response is very linear, not twitchy at all.
Turn on the tunes and then it starts to get a little jumpy and that's with a 4.88 axle.
Stock tune is very "maneuverable" in that the throttle response is very linear, not twitchy at all.
Turn on the tunes and then it starts to get a little jumpy and that's with a 4.88 axle.
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Senior User
Joined: Jun 2007
Posts: 193
Likes: 0
From: Springfield, VA
The only way I know of to fix trailer jerking would be to go with a goose neck. I guess you could try going with really stiff shocks in the rear or air bags.
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