Also have an 84... got bit by the cranking no start about three times, here are the resolutions (in my cases):
1.) Plenum hose had "barely" separated... was very hard to see/notice, had to look real close. Pushed the hose back together (top of the motor) and bingo, started and ran great.
2.) Intertia switch went bad (on mine was rubberized box (about the size of a pack of cigs, somewhat smaller)) located on the firewall, could be seen with the hood up, near top center of firewall... a wire in and a wire out (if I recall correctly, been a while)... I did a hack fix, I removed the box and connected the two wires together, been about 3 years ago.
3.) OK, not really sure what my mechanic did... I had it towed to him... he simply reached into the area near the front right under the hood, stuck his hand down there, tightened "something" up and bingo, fired up and ran great again... I was way too much of a rookie (and yes, dumb) to have asked him what it was he tightened... as I had "just" bought the car and had the PO with me etc... and we were all talking etc... all I know, is that in under 2 mins... I was good to go. To this day I wish I had asked what it was he tightened by hand (or maybe with a tool, I was not paying that close of attention, should have though). Am wondering if he may have reseated the dist. cap? Or a wire attached below.
Anyways, all 3 of these instances had the exact same symptoms, as do other things, but the old "try the simple things first" applies here.
Good luck and please post what the solution was, I know I am curious.
Ron F.
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