I have just reset my fipl.If I keep the wide open throtle at 4.3 the best I can do at closed throtle is .99.Is that half a volt going to make that big of a difference?

 

4.3 wide open is the max. it should be set at idle, 650 rpm. Mine was at 1.05 and seamed to shift too soon and then lug down the engine. I set mine up to 1.2 at idle and found that it shifted at higher rpms maintaining power and shift feel at a much more acceptable level. (WOT on mine is still only 3.9 volts). Sounds to me like you have too broad a range there and may want to replace your FIPL, Ford recommends repalacing every 60K anyway.

 

The FIPL is new.If I go to 1.2 at idle I'd be up around 4.7 WOT.

 

I believe that the TPS/FIPL sending unit is differnent between the gas and diesel engine. All the spec.s I've read call for 1.05 to 3.8 range with the max being 4.3 for the diesel engine. Otherwise you have the wrong sensor! PCL7.3 usually has a handle on the specifics on these maters, so hopefully we hear from him on this.

 

To set to specs:
With a warm engine and the idle speed set to your engine specs probably 650 in drive (curb idle).

Now with key on engine off. First connect the negative lead of a volt meter to the negative battery post, then place a paperclip straightened to slide up the side of the center wire for a good contact, touch the positive lead to the paperclip. Electrical connector must beconnected to the FIPL.

If your FIPL requires resetting loosen the small torx screws and attempt to attain the correct setting. You can loosen the large bolts on the bracket if necessary but try to retain the centering on the FIPL/blade.

Your trying to get closed throttle voltage: 1.1 V, wide open throttle voltage: minimum of 3.8 V but not more than 4.3 V.

If you can attain those #s then tighten the screws/bolts and ensure the voltage is at the correct setting after tightening. You can also do a slow sweep of the fuel lever from idle to WOT to see if there are any blanc (dead) spots, much easier with a really $$$ meter with capture mode. If you still find there are hard shifts or very soft slippery shifts you can adjust to suit your driving but be warned slippery shifts will burn the trans up.

 

O-kay-If I set the FIPL to 1.1 at closed throtle I'll be over the 4.3 max at WOTand if I set WOT at 4.3 or lower my closed throtle will be .99 or lower.Will that one tenth of a volt at closed throtle cause a problem.

 

sorry for the confusion

 

Its the throtle position senser.

 

thanks for bringing me up to speed

 

I got my 91 F350 set up with a closed throttle of 0.9 and a wide open throttle of 3.8. The only problem with this set-up is my tranny won't come out of O.D. when I am climbing a hill because I guess 3.8V is not enought to cause it to shift.

Since the FIPL you bought seems to have a better range (0.9 to 4.3) I don't see a problem with running 0.9 Volt for the low end.

The reason I like what I got right now is that the shifts are really early and are very smooth. This set-up would not be good for towing but these days I run always empty.

I would try your 0.99V setup and see how you like the shifting, just be carefull towing with that set-up as you could burn some clutches in your tranny that way.

If you want to go to the 1.1V closed throttle setup you may need to get another FIPL as the one you got probably won't work as your upper end voltage will be to high (< 4.3V) which will cause problems with shifting in the upper operating range, especially if you do towing.

I just setup my Dads 92 F250 on the weekend and it set perfectly for an overall range of 1.1V to 4.0V.

Hope this helps a little...

Seb.......

 

Yea I ran the truck today pulling about 4k and it did not seem to want to go into overdive till 60 mph.I will by another FIPL if thats what it takes to get it wright.Thanks

 

Sure sounds like there is already a problem with the unit you bought. Use a digital volt meter to check for dead-spots, jumps as you move the throttle from closed to wide open. It has to be perfectly smooth, no bumps, jumps, etc...

I would buy a new FIPL. I am not impressed with the quality that is being sold these days. The one I installed on my dads truck is a "Niehoff" I purchased at Lordco Autoparts. Cost $CDN 72.00

Seb....

 

Yea- tell me about it- Quality is a thing of the past.I just purchased one for 30$.Maybe thats my problem, I am getting a low end part.I'll see if I can get that "niehoff" brand here.Thanks-

 

Don't mean to hijack this thread,but wondering what the effects of shifting do the low and high voltages have? I mean if you have idle set right and high out of range what is the result and vice versa?