Car dies at random, seems like no spark.
í69, base coupe, not original 350, MSD Streetfire HEI distributor installed two springs ago. Both under hood wiring harnesses brand new and main under dash harness replaced with excellent condition used harness two years ago. New starter two years ago. New alternator last spring. Last spring I put a rebuilt Quadrajet on it. The mechanic that rebuilt it gave it an initial adjustment so it ran ok but if you jump on it, it hesitates. I havenít had the cash to get it back to him for the final fine tuning and choke adjustment but Iíve been driving it at least four months with no problems. It does run warm on these warm summer days but itís always been like that.
So a week ago I pull in my driveway after coming home from work and it dies, turns over but wonít start, seems like no spark. I crack the gas cap in case it might be vapor locked, didnít help. Let it set for several hours and it started and ran like usual. Iím still not sure what was up so I donít take it far, just run around town in it, I did this for a few days. One evening, after running around town a little so it was up to temp it just died as I was rolling down the street, maybe 10-15 mph. I get it home, but this time it wonít start even after a day or two. I test for spark and as far as I can tell, Iím a rookie, it doesnít seem to be getting any. I pull the ignition module and coil from the distributor and have Autozone test them, they tested out ok. There is a slight amount of corrosion on the contact point inside the dist. so I clean that up, put a fresh layer of heat sink silicone on the bottom of the module, put everything back together, it starts and runs like it always has. Once again I run it around town, even take a few longer rides, 20 +/- minutes, runs fine. So this morning I take it to work, about a 15 minute drive, as I roll into the parking lot it dies, turns over but wonít pop. I tried after letting it sit an hour, still, no pop.
Could an ignition module fail intermittently? If it was going bad wouldnít it fail every time it got hot?
'69 coupe, 350 engine and trans, HEI Dist, headers, posi-track. It's a good 15 footer
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