2002 Saturn L100 temperature gage bounces around

Tiny
SAMMIEJACKSON
  • MEMBER
  • 2002 SATURN L100
  • 2.2L
  • 4 CYL
  • 2WD
  • AUTOMATIC
When I turn my car on or even drive it, the temperature gage bounces around and says my car is overheating when my car isnt overheating. I dont know what the problem could be. Also, my car is now leaking gas, so there is something wrong and I dont know what to do or what is wrong with it.
Monday, June 30th, 2014 AT 12:23 PM

11 Replies

Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
Is the fuel leak in the rear by the gas tank?Also the temp gauge goes up and bounces around as soon as you turn the car on and the engine is cold?
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Monday, June 30th, 2014 AT 12:28 PM
Tiny
SAMMIEJACKSON
  • MEMBER
  • 6 POSTS
Yes the fuel leak is right by the back passenger side under neath, and the temperature gage started when you start the car.
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Monday, June 30th, 2014 AT 12:32 PM
Tiny
SATURNTECH9
  • MECHANIC
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The fuel leak is most likely the nipple right off the fuel pump module leaking pretty common on those. I would check the temp sending unit do you have any codes in the computer?
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Monday, June 30th, 2014 AT 9:11 PM
Tiny
SAMMIEJACKSON
  • MEMBER
  • 6 POSTS
Yeah, I have gotten codes from a computer and also reset all them to when I changed the thermostat
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Monday, June 30th, 2014 AT 9:25 PM
Tiny
SATURNTECH9
  • MECHANIC
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What were the exact code number's not code descriptions?
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Monday, June 30th, 2014 AT 9:49 PM
Tiny
SAMMIEJACKSON
  • MEMBER
  • 6 POSTS
PO113
PO480
P1599
PO113

thats all it gave me
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Tuesday, July 1st, 2014 AT 11:08 AM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
The p0113 is for a skewed coolant temp sensor or inlet air temp from the temp gauge bouncing around the coolant temp sensor signal is unstable due to a bad sensor or a bad connection or wires. The p0480 is for the fan relay circuit. Do the cooling fans ever stay on for no reason?
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Tuesday, July 1st, 2014 AT 7:40 PM
Tiny
SAMMIEJACKSON
  • MEMBER
  • 6 POSTS
My fanwaa constantly runing all the time before I reset the computer.
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Thursday, July 3rd, 2014 AT 12:46 PM
Tiny
SATURNTECH9
  • MECHANIC
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Are the fans staying on with the key off and killing the battery?Those cars have issues with the cooling fan relay module going bad and the fans run and kill the battery with the key off.
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Thursday, July 3rd, 2014 AT 1:04 PM
Tiny
SAMMIEJACKSON
  • MEMBER
  • 6 POSTS
The fan doesnt turn on anymore
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Thursday, July 3rd, 2014 AT 1:43 PM
Tiny
SATURNTECH9
  • MECHANIC
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Have you checked the wiring and connector to the coolant temp sensor?
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Thursday, July 3rd, 2014 AT 6:57 PM

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