Hall Effect distributor help - minimal connections ?

[danielzink]

I found yet another diagram today referencing the TFI distributors.

Interesting how it references the (3) connectors on the distributor itself as GND/+12V/TRIGGER

[Piledriver]

Should be easy enough to track down and bag a 1984 Escort troubleshooting guide or manual online.

[The Newf]

I'd try feeding PIP back into SPOUT, after verifying the voltages, since its a full up vac+mechanical distributor.
May need a pullup or pulldown resistor, may need a 5v>12v buffer, no telling without researching what the signals look like.
(The relevant Subaru or Ford manuals may have useful troubleshooting info)

Try to use a coil known compatible with the driver since you can't control the dwell.

You can either loop the pip/spout together,or leave them open:they only come into play for ecu mapped spark curve.I assume he's using the mechanical advance mechanisms on the distributor,so they have no bearing on his installation.

[danielzink]

My brain is about fried....

If I really break down what I want to do.

I want to lose the TFI module altogether. It doesn't seem to be working for me and researching on the internet it doesn't seem to be the most reliable system Ford ever came up with.

The big question is....

Can I use the 3 connectors on the bottom of the distributor to trigger some sort of ignitor/ignition module to fire a coil ?

Dan

[The Newf]

Yes...if the module uses a 12 volt square wave pulse.Most do,but make sure.
Nothing wrong with Fords TFI system at all.Very reliable.Just don't buy cheap Chinese replacement parts.

[danielzink]

I'm still intrigued with this Bosch h 0 227 100 137 module.

Interesting diagram here: http://www.dinoplex.org/PDF/Wiring_Ferr ... Pickup.pdf

Granted they're using an optical pickup distributor - but everything I've read says the 137 module is made to work as well with a Hall Effect distributor.

[The Newf]

I'm still intrigued with this Bosch h 0 227 100 137 module.

Interesting diagram here: http://www.dinoplex.org/PDF/Wiring_Ferr ... Pickup.pdf

Granted they're using an optical pickup distributor - but everything I've read says the 137 module is made to work as well with a Hall Effect distributor.

The output of the ford hall cell is a positive square wave.Looks like the trigger input on that module is a negative pulse ???

[danielzink]

I'm still intrigued with this Bosch h 0 227 100 137 module.

Interesting diagram here: http://www.dinoplex.org/PDF/Wiring_Ferr ... Pickup.pdf

Granted they're using an optical pickup distributor - but everything I've read says the 137 module is made to work as well with a Hall Effect distributor.

The output of the ford hall cell is a positive square wave.Looks like the trigger input on that module is a negative pulse ???

In that particular diagram or in general ?

All the "google-ing" I can find just states:

"The Bosch module 0 227 100 137 / 0 227 100 139 is designed to be used with
Hall effect and also takes care of the coil dwell"

Are there different Hall Effect pulses ? negative vs. positive ?


Everyone is being so patient


Thanks Again !

[Piledriver]

I just spent 10 min typing a long list of things to check which vanished via some unintentional fat finger hotkey combo.
Check the pip output of the sensor while turning it by hand.

I'm not convinced its a Hall sensor. That should tell you if you can ditch the TFI module (which may contain a VR amp)

[The Newf]

I just spent 10 min typing a long list of things to check which vanished via some unintentional fat finger hotkey combo.
Check the pip output of the sensor while turning it by hand.

I'm not convinced its a Hall sensor. That should tell you if you can ditch the TFI module (which may contain a VR amp)

It is hall effect:alldata confirmed it.

[Piledriver]

good, then all you need to do is hook it up and see if it pulls low or goes high when the teeth are pointed at the sensor.

[danielzink]

good, then all you need to do is hook it up and see if it pulls low or goes high when the teeth are pointed at the sensor.

Could be tough without a scope.

I'll have to research and see if it can be done with a multimeter.

Is this just to verify operation ?

Thanks, Dan

[The Newf]

Can be done with a dvom:hook the positive lead of the dvom to the output terminal & hook the negative to ground.Set the dvom to dc voltage.Crank/spin the distributor & watch the values on the dvom:a value like 12.00 indicates high.A value like -12.00 indicates low.

[Piledriver]

You should be able to slowly turn the shaft by hand and use the DVM to see when/where it switches.

There are Hall sensors that have built in DSPs and are designed to not read at zero RPM, but they are a relatively recent thing.
Older units should read at any speed, including zero.

Make sure to measure the halls output, not the amps output, it is likely to limit the pulsewidth, which may throw you off..

[danielzink]

I'm still intrigued with this Bosch h 0 227 100 137 module.

Interesting diagram here: http://www.dinoplex.org/PDF/Wiring_Ferr ... Pickup.pdf

Granted they're using an optical pickup distributor - but everything I've read says the 137 module is made to work as well with a Hall Effect distributor.

Okay.

Making progress...

I ordered to Bosch module and a harness for it off eBay.

Wired it up as per the pdf referenced above....aaaaand....I have "spark"

Quotation marks because I still need to iron some things out...

Spark isn't consistent. I have to keep touching the ground lead to the battery terminal of the battery that's on my bench. I'll get intermittent spark....plus - I got poked with spark a couple good times...<LOL> dang...that'll get your attention.

So...I don't think my test rig is grounded properly....

I'll work on that...but...I'm pretty darn happy right now..


Dan