98 LS1 no spark/injector pulse
10-29-2012, 11:49 AM
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98 LS1 no spark/injector pulse Had glitchy starts for about two days; wouldn't start, then try again and would with no problem. Then it stopped starting altogether. I have no spark or injector pulse. So I replaced the crank/cam sensors (and the mapping sensor too, because I broke it getting to the cam sensor ). Still nothing. Something wrong with my PCM maybe?
10-29-2012, 01:08 PM
#2
Had glitchy starts for about two days; wouldn't start, then try again and would with no problem. Then it stopped starting altogether. I have no spark or injector pulse. So I replaced the crank/cam sensors (and the mapping sensor too, because I broke it getting to the cam sensor ). Still nothing. Something wrong with my PCM maybe?
How do you know you had no injector pulse? Put a noid light on them? Also, is the car cranking at least? Want to make sure it isn't VATS related. Good luck
11-05-2012, 11:00 AM
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Sounds like a PCM issue to me. Had the same thing happen twice on my 98 before converting the harness to use a 99+ PCM. The 98 PCM is pretty much junk. If you have a code reader or scan tool, look for code P0601 - that's the tell-tale sign. If that's the case, give hawksthirdgenparts a call. I was able to get a used PCM, programmed for my car, from them for $150
