Throttle peddle pressure hard?

[Joejohn]

Hey guys I was wondering if any one has made an effort to try and make the throttle on these IDI's easier? My throttle seems hard? I added a extra return spring but it still feels very sticky and hard to press. I drive a twin turbo mustang for a daily and I am used to snappy crisp throttle (I don't expect the diesel to rev fast but the peddle feel could be better). It just seems supper firm and I don't like it. Any ways I can do away with this? Do they make an electric conversion kit like powerstrokes have? Is there a better generic cable I can switch to? Any help would be great.

 

[RLDSL]

Either you put too stiff a spring on it, or you have the return spring attached at the wrong points. On the arm the spring goes around the ball shaft that the cables attach to , not to the little hole on the arm where it looks like it should go. If you stick it in that hole, the pedal will get so tight, you'll be worn out in 5 miles trying to drive the thing.

 

[discbrks]

Mine felt the same way. I installed a new (from Ford) cable and replaced the factory return spring with a lighter one from Advance Auto. The orig. return spring was a double spring. Drives so much nicer now.

 

[MIDNIGHT RIDER]

I didn't see what year-model truck you have; but, the problem could also, and very likely be, that brittle plastic sleeve gizmo that is at the engine end of the cable.

Several years ago, my throttle stuck wide open.

When I investigated, a portion of that outer plastic sleeve had gotten between the two sliding parts, thus hanging things up.

I worked it over with a pocket-knife and it has been problem free for years.


Until.........., last night; I installed one of those REALLY NEAT Vernier throttle controls.

When I set the throttle with the vernier-cable, the plastic sliders wanted to kink up and then bind.

I fixed things for good by carefully cutting away the most of the inner plastic sleeve, thus allowing the accelerator-cable to flex and bend any way it needs to with NO BINDING.

 

[subway]

yes most likely you have a worn out cable. i have brought new life to them by taking them out and working graphite down them. that was when i had allot more time than money, now i don't have much time either.

otherwise i would replace the cable, my truck pedal is no harder to press than any other vehicle i have.

it is also wise to stay with the double spring set up, if one fails there is nothing to stop the engine from running wide open. its a good idea to keep that safety feature.

 

[MIDNIGHT RIDER]

i have brought new life to them by taking them out and working graphite down them.

This past winter, after my accelerator FROZE several times, I removed the entire cable, brought it inside the house, and hung it straight up behind the sheet-iron stove.

After half-a-day of extreme heat treatment (about three wheelbarrow loads), I placed a stack of old papers under it and sprayed it full of moisture displacing WD-40, working the cable in and out occassionally.

Then, I kept squirting in 15W-40 engine-oil, until plenty of oil poured out the other end.

After this treatment, no more freeze-ups and it works as easy and effortlessly as new.

 

[Ironman03R]

The cable has a return spring built into it(at least on my 94) plus the factory double spring, which I think is a DOT requirement. AND there is a spring on the shaft on the IP.
When my return spring broke, I had a hard time finding a replacement so I drove around for several months with NO return spring, the one in the cable and on IP shaft did the job ok but I could tell a difference when I finally replaced it.

 

[Fordsandguns]

I didn't see what year-model truck you have; but, the problem could also, and very likely be, that brittle plastic sleeve gizmo that is at the engine end of the cable.

Several years ago, my throttle stuck wide open.

When I investigated, a portion of that outer plastic sleeve had gotten between the two sliding parts, thus hanging things up.

I worked it over with a pocket-knife and it has been problem free for years.


Until.........., last night; I installed one of those REALLY NEAT Vernier throttle controls.

When I set the throttle with the vernier-cable, the plastic sliders wanted to kink up and then bind.

I fixed things for good by carefully cutting away the most of the inner plastic sleeve, thus allowing the accelerator-cable to flex and bend any way it needs to with NO BINDING.

Which vernier cable are you using?

 

[MIDNIGHT RIDER]

Which vernier cable are you using?

This baby right here :

http://www.awdirect.com/exterior-throttle-cable-15-foot-control-cable-vcgtx15/throttle/



I mounted it on the floor, in the space between driver's-seat and door, in the same area that has the MICO brake-lock, the MANUAL three-tank return-line selector-valve, the MANUAL three-tank fuel-draw-line selector-valve, and the DPDT fuel-gauge switch.

 

[LCAM-01XA]

The cable has a return spring built into it(at least on my 94) plus the factory double spring, which I think is a DOT requirement. AND there is a spring on the shaft on the IP.

The IP in my truck has no return spring on its shaft. The spare IP me and Jake yanked off a junkyard '80s F250 also has no return spring, and I'm pretty sure Jake's '86 ain't got one either. Is that shaft spring a '92-up thing, or we're just SOL here?

 

[Fordsandguns]

This baby right here :

http://www.awdirect.com/exterior-throttle-cable-15-foot-control-cable-vcgtx15/throttle/



I mounted it on the floor, in the space between driver's-seat and door, in the same area that has the MICO brake-lock, the MANUAL three-tank return-line selector-valve, the MANUAL three-tank fuel-draw-line selector-valve, and the DPDT fuel-gauge switch.

Thanks. My 91 has no cruise and I though something like this might be a decent alternative. My 99 ranger is also without cruise and it might work there too. I could see some safety issues setting one up this way, but I think if you're aware of it it should be ok. Though if anyone else were to drive mine with this on it, the cable would be disconnected!

 

[Agnem]

Generally speaking, the IP's do have an internal return spring, although it is very weak, and not well suited to moving the throttle arm. It's more for keeping the slack out of the metering valve linkage. This picture of it is from my fuel system servicing article.
http://oilburners.net/brian/idi/FuelInjectionServicing.htm

 

[MIDNIGHT RIDER]

Thanks. My 91 has no cruise and I though something like this might be a decent alternative. My 99 ranger is also without cruise and it might work there too. I could see some safety issues setting one up this way, but I think if you're aware of it it should be ok. Though if anyone else were to drive mine with this on it, the cable would be disconnected!

Factory supplied "cruise control" is the cause of almost as many crashes as cell-phones (which, by the way, cause more wrecks than drunk-drivers).

A throttle-cable used as cruise-control could very well be a death-trap on an automatic-transmission vehicle, dangerous enough on a manual, but at least the clutch will turn the engine loose.

The IP in my truck has no return spring on its shaft. The spare IP me and Jake yanked off a junkyard '80s F250 also has no return spring, and I'm pretty sure Jake's '86 ain't got one either. Is that shaft spring a '92-up thing, or we're just SOL here?

To the best of my memory, the three different pumps that I had on my old 1985 6.9 would snap the throttle-lever back to idle with some authority.

If I get close to the old engine and remember to, I will check this out for sure.

 

[LCAM-01XA]

Midnight Rider, I know big International trucks have an external throttle lever spring that's coiled around the throttle shaft, they also got the two stretch-springs that we have. I gotta chekc if mine returns with the cable and exterlan springs disconnected, it may, but I'm pretty sure it was fairly weak in that department.

 

[DeepRoots]

joe john, if you have a turbo, be wary of where the throttle cables at.
I ummm kinda melted one, and it was a b*tch to use for a good bit till I replaced it, real stickin like