Chevrolet SS Posted June 10, 2009 Report Share Posted June 10, 2009 :okay, so I have been working on my '99 Silverado 1500 that had been sitting for over a year. I had to change the gumed up fuel pump. Now that its "running" its down a cylinder (I believe its #2, front passenger) I unpluged each coil and the 5.3 studders a lot more when each is unpluged except for the one, so I poped another plug in... not the problem. So I unpluged the boot from the coil, I get the arc on all coils except for the one. So i run up to autozone and pop a new coil in.... agin not the problem. Oviously it is not getting power... I did not have a test light with me only a DMM I could only seem to meter 12+ constant. Any ideas??? Quote Link to comment Share on other sites More sharing options...
budhayes3 Posted June 23, 2009 Report Share Posted June 23, 2009 I'd check the integrity of the wiring harness to that coil, make sure that a critter didn't eat through the harness. Try a better test to check for spark...get an old spark plug and plug it in the end of the spark plug wire. Ground the plug (you could use a stretch of wire), and crank the engine over to see if spark jumps the gap. I'd be more prone to think that you have a bad injector after sitting for a year than a bad coil, but anything's possible. Quote Link to comment Share on other sites More sharing options...
Fireman31 Posted June 23, 2009 Report Share Posted June 23, 2009 make sure that a critter didn't eat through the harness. Since the truck sat for such a long period of time, it is quite possible that rodent started gnawing at stuff under the hood........ Quote Link to comment Share on other sites More sharing options...
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