Question:Does the coolant temperature sensor have anything to do with the fuel injectors on 2002 Buick Lesabre?
Answer: The coolant temperature sensor has nothing to do with the fuel injectors.
Car starts fine when warm but won't start when cold unless primed with starting fluid and will not start when it cools unless primed.
I'd think you have a fuel pump problem.
The pressure at the fuel rail is correct.
What was the pressure?
Around 45 PSI.
Around 45 psi? That isn't very specific?!
On the first crank 47 psi then varies slightly after about the 3rd crank but never falls below 45.
The actual specification for fuel pressure for your Buick is 52-59psi. 45 to 47 is not good enough. You should replace the fuel pump assembly, and while you're there replace the fuel filter as well.
Any other suggestions while were here?
Not really, I'd just get the fuel problem taken care of so the car will start normally.
Thank you very much.
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