Well hell, so we thought we had this thing figured out! Guess again, we thought that the cutting out was due to a failing ignition switch, WELLLLLLL, we replaced the ignition switch, not to hard to do, by the way. And, went to restart the darn thing, wont start. Back to square one. Now I have a certified GM tech telling me that it might be the pick-up coil in the distributor. The engine cranks over fine, plenty of cranking power. As I mentioned before, it starts up when it wants to and may run 5 minutes and cut out, it may run 1 hr. and cut out. it may run 1/2 day then cut out no warning. Sometimes it will restart fine, other times it wont restart for a few days. Heres what weve replaced in the course of fixing this cut-out issue: new mechanical fuel pump, new GM ignition module, new cap-rotor, platinum spark plugs, new ignition wires, new ignition switch. Now I am getting ready to pull the distributor out so we can check its condition. The GM tech is telling me that due to the miles on the Blazer ( 160,000 ) original miles, that the bushings may be worn on the distributor and that the pick-up coil may be failing, or may have sustained damage from the distributor shaft floating around enough to damage the pick-up coil. I am also going to check the ignition coil, by taking some ohm readings to see if it is on its way out. By the way, the ecm ( computer ) is new! Any ideas????
Once again, 1984 Chevy S-10 Blazer 4x4 2.8L V6, carbureted E2SE carb.
Cuts out ( shuts-down ) no warning!
