My 1997 Discovery 1 V8i 3.9L has intermittent starting problem
#13
Where is the CPS on the GEMS 4.0 located?
#14
The CPS on the GEMS 4.0 is near the same spot as the photo from Ononomos. It detects pulses from a spikey steel ring that is attached to the flywheel. The sensor probe fits between the spikes, magnetic type sensor I suppose. Mine was bent and the wires intentionally shorted by the PO when I first got my 96. Replaced it during the rebuild.
#15
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#18
Sam, thanks for the photo. It looks just like my '94. Does your truck have the Check Engine Light (CEL) illuminated? In North America these trucks have a code display under the passenger (right side) seat. The code will show if the CEL is on. It helps troubleshoot one fault at a time.
#19
I don't see a CEL in the video you posted either. Mine shines briefly when I first turn the key before cranking. In your video, the engine sounds good after it starts, so it doesn't seem to be getting the signal to the coil. That could be caused by the CKP sensor, or a relay. Less likely, I think is the distributor amplifier or pickup inside the distributor or other ignition system components. Here's a paragraph from the manual:
Troubleshoot Lucas ignition system
Troubleshoot Lucas ignition system