1990 240 No crank mystery.
Hey y'all, been chasing a gremlin of sorts with my 1990 240. A while back I ran into a no crank issue, but the starter is fine so I installed a push button start as a temporary fix. It cranks and runs just fine.
Finally getting around to fixing it, I thought it might be the ignition switch, so I just spent about 3 days swapping that with an OEM replacement. Still no crank. Thought it might be the neutral safety switch, so I jumped the cables but still nothing. Tested with a multimeter, I'm getting no power to the blue/yellow wire that goes to the starter. Only getting 2.5V at the smaller spade on the alternator with key in II position. All the fuses look good including 25A under the hood. Battery and terminals are essentially brand new. Just curious if anyone's run into a similar problem, or any suggestions on what to check next? Feeling stumped.