Engine/Transmission (1998.5 - 2002) Clutch pedal safety switch

[BigPapa]

Only two wires.

 

[mwilson]

Only two wires.

I'm having trouble with that, how does it create both the pedal at rest and pedal depressed which to me is what's needed for the safety start and cruise disconnect...02' shouldn't be intelligent enough to work with two different resistances??? Maybe???

Or is there a second switch not shown in the attached drawings??

 

[mwilson]

And if it allows start when there is a connection but allows cruise without a connection why didn't he have cruise when he twisted the wires together???

Based on a two wire scenario.....

 

[BigPapa]

I'm having trouble with that, how does it create both the pedal at rest and pedal depressed which to me is what's needed for the safety start and cruise disconnect...02' shouldn't be intelligent enough to work with two different resistances??? Maybe???

Or is there a second switch not shown in the attached drawings??

It's just a simple normally open switch.

And if it allows start when there is a connection but allows cruise without a connection why didn't he have cruise when he twisted the wires together???

Based on a two wire scenario.....

With the wires together the circuit is closed emulating the clutch pedal depressed. The cruise cancels when the clutch is depressed.

 

[mwilson]

So just barely touching the clutch pedal allows a start??? That doesn't seem very safe......

See what I'm getting at here?? Anything I ever operated with a clutch switch required pedal almost touching the firewall before the starter would engage, but cruise disengagement only required a tap on the pedal.....That's where I'm having trouble with this, to me it's two separate functions.....and either requires two switches or a double acting switch....

 

[phantomusa]

So just barely touching the clutch pedal allows a start???

No the pedal needs to be depressed enuff to active the circuit

 

[phantomusa]

From what I'm see by depressing the pedal it closes the circuit and allows the engine to start
By depressing the pedal while operating the cruise control it turns cruise off so it's taking that normally open circuit and sensing it's now a closed circuit and turning the cruise off because it's now a closed circuit and no longer a open circuit ....so by jointing the two wires together it's always a closed circuit and not allowing the cruise to operate ???? I think or am I confused

 

[BigPapa]

So just barely touching the clutch pedal allows a start??? That doesn't seem very safe......

It's a long-travel switch. Imagine a plunger-type switch with 1" to 1 1/2" travel.

From what I'm see by depressing the pedal it closes the circuit and allows the engine to start
By depressing the pedal while operating the cruise control it turns cruise off so it's taking that normally open circuit and sensing it's now a closed circuit and turning the cruise off....so by jointing the two wires together it's always a closed circuit and not allowing the cruise to operate

You are correct.

Either hit GCroyle up for the switch or rig you a toggle switch.

 

[mwilson]

No the pedal needs to be depressed enuff to active the circuit

So there are two systems at play here. That's what I'm saying.

You can't have the single function do both things, if you depressed the clutch pedal enough to activate the start circuit the clutch would slip before it shut off the cruise. There is something missing here....and it can't be contacts at either end of the switch without another wire.

 

[phantomusa]

No you wouldn't use the cruise while starting the truck so that part of the circuit is only used to start
If you are in cruise and step on the clutch the circuit is then again closed but it's signal is now send to the cruise and turns it off
Same closed circuit but used two different ways

 

[mwilson]

The only thing that might make sense is increased electrical resistance as you depress the pedal. Slight resistance would disable the cruise and full resistance is required for an engine start......

 

[mwilson]

I can't help you outwit it until I completely understand how it works......

 

[phantomusa]

The only solution so far is to put the two wires on a on/off toggle switch so I can close the circuit to start then switch it to a open circuit to operate the cruise control

 

[GCroyle]

These start switches can be removed from the pushrod, slide the center contact up and expose the contacts. Clean the dust and crud from all contacts, hook up a meter and check for continuity.

But like they say on Shark Tank.

I'm out.

 

[phantomusa]

GCroyle that's for the help I really just want the clutch switch outta the starting circuit altogether. ...I'm a old dog that doesn't like new tricks after driving 18 wheelers for 50 years I can start a truck outta gear guess dodge and other auto makers figure in this automatic transmission world a straight stick would kill people unless there's safety devices (not) which is the same class as a riding mower seat shut off switch yup that's bypassed too