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Old 06-22-2011, 06:49 PM
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Join Date: Jun 2011
Location: Homer, AK
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Default 1996 Chevy won't start when cold

First time posting here. Hope you guys can point me in the right direction. My '96 3/4 ton has a 5.7 Vortec that recently developed an aversion to starting when the engine is cold. Cranks up immediately if I use starting fluid. This past winter it had no problem starting cold even after sitting outside at 20 below zero. Once the engine is warm it starts fine. Hoping I don't have to replace 10 different things to find the one that aint working. Ideas?
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Old 06-23-2011, 06:52 AM
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Join Date: Feb 2011
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fuel pressure?check the resistance on the colant temp sensor when cold (sitting overnight) you can google it and get the chart to see what the resistance should be at a certain temp if not i should be able to copy it from my manual

Sean
97 4x4 burb
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Old 06-23-2011, 09:25 AM
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I would suspect the time delay relay that runs the pump for a few seconds to pressure up the system before starting. In a quiet area turn the key on and see if you hear the pump run for a short time.
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Old 06-23-2011, 01:14 PM
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Thanks guys! I pulled the coolant temp sensor and found it was giving very low #s. Replaced it this morning and the truck starts right up. Sean, you probably saved me several hundred bucks, cause I would have replaced a lot of other things first. Thanks again!
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1996, 57, 96, chevy, cold, difficulty, dont, fluid, issues, silverado, sitting, start, starting, truck, wont

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