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Re: 3K RPM Stumble, Y2K Chevy T-10 Blazer, 4.3L...any ideas??
Posted to Technical Discussion Forum on 1/21/2004

Hi Trent

Does this have the original PCM in it? Does it have misfire codes? Do you have a scope?

If you have a scope hook up to one of the injectors and check the on time when under load in the bay. As the engine stumbles see if the on time reduces in an i... Login to read more.