trucks are the good lifting machine......
and its very useful......m agree with u guys......
Sorry if I get pedantic about that, I have just seen so dang many where they wired it all wrong. I used to think they must have had a screwed up copy of the instructions or something. It is one of those spots where I say "gee, C.A.R.B. has some good points too, at least we got rid of that time delay stuff"...
Yes edward, you are absolutely correct The time delay module delays ignition signal not engagement of the starter and I meant to type ignition signal. Thanks for pointing it out.
Step, when you say "A properly operating time-delay module will theoretically delay engagement of the starter long enough for the above-described buffoonery particular to these engines to run its course", I think you misunderstand the reasoning behind the time delay.
If _properly_ installed and wired, it does not delay the starter, it delays the power to the ignition circuit until the starter has 0.5 seconds to engage to get the motor turning in the proper direction.
I think the difference between the 4.3GM problem and the original posters FE has to do with how much raw compression the motor has. With the 4.3 gm, the high compression means the cylinder stops before TDC (and so turns backwards), and this guys FE has so little compression, it stops at or slightly after TDC (and so turns forward and starts).
I have only seen this on trucks that the pickup (Igniter) in the distributor had no heat-sink grease on the bottom and had failed to the point of intermittent shut off, but that may be because no one cared about the restart until the igniter went bad, or just a coincidence for all I know.
A correct repair would be a motor rebuild, but I would expect the time delay to be a reasonable fix, but I would also consider this a 'non-problem' for this young of a truck, why not just wait a minute between turning the key on and off?
A time-delay module could also be installed on a problem truck the wire connections are pretty straightforward for the Mitsi/Cat modules...
Ive never gotten those engines to rotate more than a full turn with this method, let alone start. A properly operating time-delay module will theoretically delay engagement of the starter (EDIT: ignition signal) long enough for the above-described buffoonery particular to these engines to run its course. Never disable the time-delay module for the 4.3 and 4-181 engines for this reason. Make sure it is operating properly.
I have recently seen the same thing, and I think he is describing a situation like what breaks the nosecones off starters on GM4.3 powered pre CARB trucks, LPG powered. it is from a spark generated when the coil's field collapses as the key is moved, with the piston stopped with compression and fuel in the cylinder.
If it was me, I think I would replace the igniter in the distributor, do a complete tuneup check the wiring and the key switch itself, and this time be sure to use the heat sink compound and clean off the old heat sink compound.
I agree.
It sounds like it might be "dieseling". Check the oil and see if it has a lot of fuel in it.
The only way an engine can start without the starter rotating the crankshaft is if the crankshaft is still rotating from shutdown, which should only be less than a second, or if the crankshaft is still rotating because it is dieseling. The crankshaft isn't going to begin rotating all by itself.
I suspect you are trying to say something else, but unless you can find a way to say it clearly we can only guess at it. keep trying and we'll be here. these old trucks are not that complicated.
Ignition turned back on key in first position not crank,engine restarts without starter engaging. Gas system checks out ok Coil & Balast resistor replaced tried earth strap to block no change.
let's try this again. Your truck runs fine, you shut the ignition off and back on within fifteen seconds and it starts up as normal? What's the problem?