Item 12.
The EEC-V expects a 8k PPM (pulse per mile) VSS (vehicle speed sensor) signal from the PSOM (speedo module) just like other EEC-IV equipped 1987-1997 F trucks (and unlike other EEC-V applications that use a 16k or 40k PPM VSS signal).
It is also compatible with the Ford VRS (variable reluctance sensor) speed sensors.
I was able to use a F-450/550 extension housing on my E4OD which has a OSS (Output Shaft Speed) sensor boss in it (and is also a much stronger cast iron part, instead of cast aluminum as the F-150/250/350 housing are).
I had a 3 tooth reluctor made that is an interference fit on the E4OD's output shaft (the F-550's had a 18 tooth reluctor and matching splined output shaft). The result is a perfect 8k PPM signal to feed to the EEC-V (and Ford CruiseControl module) that is independant of the transfer case low range gearing.
This means the shift scheduling is not affected by using low range even though my truck has two different low range ratios (2:1 or 4:1), none of which match the stock BW t-case ratios.
xctasy;1716225 said:What a very strange, but very cool system.. It's just the 8000 plips per mile, early EECIV compatibale 8 pulse per revolution VRS system, with a variable voltage sqaure wave form from 20 mph onwards. It does have some funny features on sub 20 mph voltage polling, technically able to poll back down to 7 mph in some circumstances.
Certain versions of the EEC III, EEC IV and most EEC V's require an 8000 pulse per mile vehicle speed sensor signal from the PSOM (speedo module), which is just like all other EEC-IV equipped vehicles
Other later EEC V applications use a 16000 or 40000 pulse per mile VSS signal.
I'm told that some of the CFI or Speed Desnity AOD Fox varaints poll down to 7 mph, and allow idle speed conditioning.
Sadly, the periodic zero moh to 19.9 mph null readings won't do what I need it to do, as like some ABS circuits, it has no reliable squarewave below 20 mph to log distance travelled. Its circumstantial, and as such, presnts a Major Bummmer.....
I could probably use a prescaler to create a digital sqaure wave form from an SN95 hub, but I can get another Proximity sensor tommorw in the post for 95 US.
I jacked up my car, and ran the standard Hetz, A/C Voltage and Ohms resistance checks from zero to 62 mph, with my metric speedo registering in KM/H. Note that there is no voltage going up to 32 km/h or 20 mph, but once invoked, the voltage can be recorded right donw to zero, so there is an interesting voltage speed, Hertz resolution
0 km/h, 0 mph 0 Hz, zero volts AC
12 km/h, 7.4 mph, but 0.016 volts AC on over run
See picture
20 km/h, 12.4 mph 0 Hz, zero volts AC
30 km/h, 18.6 mph 0 Hz, zero volts AC, but 0.033 volts AC on overun
See picture
32 km/h, 19.9 mph 0 Hz, 0.00 volts AC
32.2 km/h, 20.0 mph, 0 Hz, 0.019 volts AC
40 km/h, 24.9 mph 0.056 volts AC
50 km/h, 31.1 mph, 0.083 volts AC
60 km/h, 37.3 mph 102 Hz, 0.109 volts AC
70 km/h, 43.5 mph, 0.149 volts AC
80 km/h, 49.7 mph 0.186 volts AC
88 km/h, 54.7 mph 125 Hz, 0.223 volts AC
See picture
100 km/h 62.1 mph, 0.273 volts AC
See picture
The square wave form kicks in after 19.9 mph on the upward rise, with zero Hertz cycles per second on my Cat IV multimetervoltage and the voltage increasing steadily from 20 mph on upwards.
The on the decilne after 20 mph, it records right down to 7 mph, assumably for the one Speed Desnity AOD car that needed idle speed control...
Well, I've tried to make the Fox VR sensor work, but its designed for other purposes Ford engineers had in mind in the late 70's, not for a roading technician's list of must haves. I was hoping that the 8 plips per revolution reluctor would allow a square wave form logging down to "stop start" walking speed, as required by Autocross Halda, Brantz and other Route position meter. But it doesn't. There are other speedo pickups that do, the Fox system isn't really difficult, but I wanted a truly digital solution. Ford system is half digital, half anologue, and it hasn't helped me.
I had no choice but to set up another Bernstein proximity sensor, and JB Weld/Devcon expoxy in four extra M10 30 mm long set screws with the hex head filled in with a cut down Allen keyhead Arildited to the set screw.
Mr Bernstein, JB Weld, Mr Allen and Mr Tu Pack Araldite® from Selley's Australia saved my life
It was a lot harder, I thought I could just drill four holes, and run an M10 1.5 MM tap and die through it, but there wasn't enough metal to do it.
The requiremnt I have is to be able to log distances of 9-1/2 inches along the road, and with a four stud wheel and 77 inch rollout (loaded) 190/65 390 tire, I can get down to only 19.3 inches with four studs, or 15.5 inches five stud.
I can't fit 10 studs on the inner wheel pitch center diameter, so I'm stuck with 8 3/4" bolt heads on a 108 mm 4-1/4" PCD, and that's going to have to be used when I go Five stud as well.
I'm scratching my head on how to make a 10 bolt even spaced sesnor ring on the back of a five stud brake disk...that's my next project.
Hope this has helped somone here...
SC and MM.
That little blurb I did on the EECV 460 1996 F250 truck in your went into Fords VR and VSS signal protocols.
https://www.stangnet.com/mustang-fo...ea-advice-on-build.908143/page-9#post-9162212
Just for Variable Reluctor guys who wanna use a VR sensor to generate a Square Wave form.
DON'T.
A quick auxilary system to generate a square wave form is to use a Bernstien sensor which is commonally used for Rally Cars down here.
Generally, becasue of cost, and the issues with pure square waves forms being a problem source of emf or digital crossover, all the car based sesnors are of a Variable Reluctor type, pure Analogue input systems which don't poll below 7 mph. (Read below)
There are a few exceptions, but not many.
Sometimes you can use the Brantz Prescaler to divide Analogue voltage changes to an almost square wave form, but athough I've found it exceptionally good for tire cnahge calibration, and very adjustable, it won't work any mircales on the normal combined pre OBD2 Ford VR sensors for cruise control and speedo.
Been There, Done That.
Additionally, the post OBD1 stuff right into the OBD2 era Didn't work on my 1996 Nissan Stagea AWD,
my wifes ABS equiped 1996 RAV4 G spec 180 PS 3SGE
my Opus International Consultants Ltd 1993 VP Holden Commodore GM 3800 Executive
my Opus International Consultants Ltd 1994 Toyota HiAce SR5 2.4 Liter gasoline van
my Opus International Consultants Ltd 1994 Toyota Hilux SR5 2.4 Liter gasoline pickup
and my 1981 Mustang, which used the VR sensor.
The Fox VR sensor dates back to the 1969 California spec 302 Boss and Eliminator, and California spec 351C 4V Distrovac system also used on stick shift Maverick 200 and 250's to the early 73 era. It was used as a ignition advance booster to improve cold start emissions at various speeds below full throttle.
All off them start polling at about 20 mph on the upward increase, and then down to 6 mph on the decline.
http://vb.foureyedpride.com/showthr...age-output-verses-speed&p=1716225#post1716225
I tried that...but I couldn't figure out how I was gonna type while my hands were under my ass, so I scrapped that plan.Just sit on those hands and wait...you can do that right Mike
This seems like a good way to get the inputs we need for traction control ect...jSC and MM.
That little blurb I did on the EECV 460 1996 F250 truck in your went into Fords VR and VSS signal protocols.
https://www.stangnet.com/mustang-fo...ea-advice-on-build.908143/page-9#post-9162212
Just for Variable Reluctor guys who wanna use a VR sensor to generate a Square Wave form.
DON'T.
A quick auxilary system to generate a square wave form is to use a Bernstien sensor which is commonally used for Rally Cars down here.
Generally, becasue of cost, and the issues with pure square waves forms being a problem source of emf or digital crossover, all the car based sesnors are of a Variable Reluctor type, pure Analogue input systems which don't poll below 7 mph. (Read below)
There are a few exceptions, but not many.
Sometimes you can use the Brantz Prescaler to divide Analogue voltage changes to an almost square wave form, but athough I've found it exceptionally good for tire cnahge calibration, and very adjustable, it won't work any mircales on the normal combined pre OBD2 Ford VR sensors for cruise control and speedo.
Been There, Done That.
Additionally, the post OBD1 stuff right into the OBD2 era Didn't work on my 1996 Nissan Stagea AWD,
my wifes ABS equiped 1996 RAV4 G spec 180 PS 3SGE
my Opus International Consultants Ltd 1993 VP Holden Commodore GM 3800 Executive
my Opus International Consultants Ltd 1994 Toyota HiAce SR5 2.4 Liter gasoline van
my Opus International Consultants Ltd 1994 Toyota Hilux SR5 2.4 Liter gasoline pickup
and my 1981 Mustang, which used the VR sensor.
The Fox VR sensor dates back to the 1969 California spec 302 Boss and Eliminator, and California spec 351C 4V Distrovac system also used on stick shift Maverick 200 and 250's to the early 73 era. It was used as a ignition advance booster to improve cold start emissions at various speeds below full throttle.
All off them start polling at about 20 mph on the upward increase, and then down to 6 mph on the decline.
http://vb.foureyedpride.com/showthr...age-output-verses-speed&p=1716225#post1716225
That is what it looks like. ( Well, that and the bogus repair on the back edge)Hail damage?
As long as you use hardener(That is what it looks like. ( Well, that and the bogus repair on the back edge)
The good thing is it don't feel like it. You cannot feel the little dimples, although they are clearly low. Maybe they'll fill under primer Dave? @Davedacarpainter
What if I use a 2 part primer instead? AutoStore bought stuff.As long as you use hardener() in your primer, it’ll probably fill them.
Worst case? You find a couple that need a little filler.
I assumed you would be using a 2k system for primering.What if I use a 2 part primer instead? AutoStore bought stuff.
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