Question about 2002 Cadillac Seville

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I have a 1997 cadillac seville sts and it acts like its not getting gas to start but it has full tank i have a new key with sensor chip so not the problem runs fine for a while when i get it started then when then engine is hot or warm is when it wants to not start then its that way for a few days then it starts again . then the other day i noticed it had used all of the raidator fueled out twice once befor i got to the store a few blocks away then on the trip home what could cause this

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  • Cadillac Master
  • 21,873 Answers

Sounds like two different problems. The no start could be fuel or ignition related. The loss of coolant could be an external or internal leak, including a head gasket.
You would need to figure out if you are lacking spark or fuel pressure when it fails to start to proceed with testing.

Posted on Feb 15, 2014

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Posted on Jan 02, 2017

  • 8 Answers

SOURCE: 1999 cadillac deville hard starting after its drove

TPS throttle position sensor needs cleaning or replacment. or if you run the tank low on fuel you might be needing to replace fuel pump and filter.

Posted on May 15, 2009

polarcycle
  • 1392 Answers

SOURCE: Erratic Gas Gauge

You need to remove the tank and replace the fuel pump as the sending unit is part of the pump assembly.

Posted on May 29, 2009

  • 1 Answer

SOURCE: 2001 Cadillac Deville problems starting

I have had the same problem and I have come to the conclusion it is the security system. After 3 minutes the car will start so there is nothing wrong with the battery or starter. I have had it to the dealer a few times and they cannot solve it. It may be the locks on the doors and they may not be resetting properly. I have learned to live with it.

Posted on Oct 14, 2009

lesabre1972
  • 474 Answers

SOURCE: 01 cadillac seville sts

It defanetly sounds like a sending unit and the fuel tank needs to be removed in order to replace it and it will most likely come with a new fuel pump too.They come as a unit and there not cheap. Sorry.

Posted on Feb 06, 2010

Testimonial: "Additionally found complete unit with new float, screen, gasket and sending unit for $89 NEW!!!"

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