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My 2003 cadillac cts dies after it warms up from driving but…

Customer Question
My 2003 cadillac cts...

My 2003 cadillac cts dies after it warms up from driving but once it dies it takes sometimes hours even days to start again

Mechanic's Assistant: Will the headlights turn on? Is the battery fully charged?

Yes the headlights turn on and the battery is fully charged

Mechanic's Assistant: Are you fixing your CTS yourself? What have you tried so far?

Yes replaced fuel filter replaced the o2 sensor cleaned out the fuel injectors

Mechanic's Assistant: Anything else you want the mechanic to know before I connect you?

Do you also answer other questions relating to a different make and model car

Submitted: 9 months ago.Category: Cadillac
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Answered in 2 minutes by:
9/8/2017
Cadillac Mechanic: Dan, Technician replied 9 months ago
Dan
Dan, Technician
Category: Cadillac
Satisfied Customers: 25,938
Experience: Independent Shop Experience, 2 Year Automotive Diploma, & Access to Information Database
Verified

Hello, my name is ***** ***** I'm here to help get your problem solved.

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Cadillac Mechanic: Dan, Technician replied 9 months ago

This is a common symptom of a worn fuel pump. You can check fuel pressure when it will start then compare to when to when it won't start. If pressure is lower during no start then you need to replace the fuel pump. Fuel pump is about about a 5 hour job to replace. Let me know if you have questions, thanks.

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Customer reply replied 9 months ago
the car runs with power when given gas in fact i rev the rpms to keep it running but i have to utilize the brake simutaneously with the gas for example in a thirty mile hour zone using the above stated technique {gas and brake }ill be doing sixty could this still be a fuel pump problem
Cadillac Mechanic: David Craig, Auto Mechanic replied 9 months ago
David Craig
David Craig, Auto Mechanic
Category: Cadillac
Satisfied Customers: 5,582
Experience: Owner/Mechanic at 3D Automotive
Verified

Hi Im David, if the fuel pump is overheating it can happen at any speed. If the fuel level of the tank is low, exposing some of the pump module it can overheat especially when the pump is 14 years old. Is you check engine light on or does it come on when driving at all?

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