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04 grandprix 3800 no spark?
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smallchev
Posted 2/8/2015 22:15 (#4373195)
Subject: 04 grandprix 3800 no spark?


sw mn
Went to start it after being parked for a couple hours and it wouldn't fire. Few days later got it in the shop and threw scan tool on. When cranking it is showing both rpm signals and everything I've read says the crankshaft sensor should be good if it is doing this. It also has injector pulse. I had a parts car sitting around so tried different ignition module and still had nothing. Tried cam sensor and also swaped the harness from igntion module to crank and cam sensor. The only thing I haven't done is check the spark again with a tester since swapping the harness but it didn't fire when I cranked it. Plugs possibly could be flooded from previous cranking the day before but I would think it would have atleast tried to fire. Will check for spark in the morning but am kind of out of ideas. Any ideas? Thanks.
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