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Cold Start on 99 Silverado
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Question
Marts99Silverado
I have a 99 Silverado with a 5.3 vortex. It’s middle of winter here. We’re getting colder than normal temps. (20s down to single digits.) couple weeks ago I realized when I would start my truck in the morning it’d be idling, and then it would bog down to under 500 rpms and sputter. Just for a brief moment then rev up to 1500 or so and do the same thing. I don’t know what is causing this. Any ideas ? I could post a video tomorrow morning and show y’all. Appreciate your time and thoughts. Thanks to all in advance.
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