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1996 Chevy won't start when cold


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Kachemaker's Avatar
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Join Date: Jun 2011
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Homer, AK

June 22nd, 2011, 6:49 PM   #1  
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?

 
shamrock246's Avatar
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Middletown DE

June 23rd, 2011, 6:52 AM   #2  
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

 
OLD WRENCH's Avatar
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June 23rd, 2011, 9:25 AM   #3  
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.

 
Kachemaker's Avatar
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Homer, AK

June 23rd, 2011, 1:14 PM   #4  
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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