2004 Gen won't pop-start / bump-start: WHY? Please help

D

DGO Joe

Test Drive
Location
Colorado
I just bought a 2004 Gen 1 with 5-speed with the anticipation of being able to pop-start it but it simply won't. I live in Colorado where we have large hills and it won't start even when rolling at 20-30 mph and popping in 2nd gear. Yes, the key is in the on position. It starts fine with the electric starter but I spend a lot of time in the backcountry of Colorado and Utah and intentionally park my vehicles so that I can pop-start them if I leave the lights on or something else goes awry with the starting system. I've been driving manual 4WD vehicles since 1976 so I am quite familiar with the procedure and own two other vehicles that pop-start just fine. If I cannot enable pop-starting I will be forced to keep my XTerra within a few miles of roads that have some traffic every few days which is quite a restriction.

I WOULD GREATLY APPRECIATE HELP. If anyone knows how to bypass whatever 'safety' feature is disallowing the pop-start, please let me know.
 
Prime

Prime

Shut up Baby, I know it!
Admin
Location
Denver Adjacent
The clutch switch is only an interrupt for the starter motor circuit. As long as the ignition is in the run position, it should start. Here is a grab of the ignition circuit.

1637209944919.png

This shows that the key in the on position supplies power to the ignition coil. So that's really confusing why it wouldn't do it. I can't recall if I was able to bump start my old 1st gen. Hrmm.
 
D

DGO Joe

Test Drive
Location
Colorado
Thanks greatly for all the help. The circuit schematic is great.

I have no alarm or security system.

Any internal combustion engine must start if it fuel and ignition are available while the engine turns over. I therefore conclude that there must be a safety feature that cuts power to the fuel pump or fuel injectors. Why an '03 will start and '04 won't is quite a conundrum.

Again, many thanks to all of you.
 
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