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99 Saturn SL2

Tiny
C404FLYER
  • MEMBER
  • 1999 SATURN
I have a 99 saturn sl2. When its cold. Usually 35 degrees or less. When started it runs a few seconds then start to pulsate a few hundred rpm's. After it warms up it idles fine. Also on occasion if you shut it off and let it sit about 30 min to an hour and try to start, it acts like it flooded. Had it in the shop and they said no codes came up.
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Friday, March 9th, 2007 AT 6:09 PM

1 Reply

Tiny
PEPPERMRJ
  • MECHANIC
  • 1,158 POSTS
The coolant temp sensor controls the input for the fan, gauge, and has a good deal to due with the air fuel ratio. This in turn can present poor fuel mileage, high idle, and hard/no start conditions.

The original ECTS from Saturn had a composite tip (plastic). They were known to fail after a period of time. Mine lasted around 100,000 mile on my 96 SC2.

Replace it with an updated brass tip model from saturn.

Pretty simple swap. Just like replacing a spark plug. Check the wire conector for corosion and clean or replace as needed.

Good luck and let us know. :)
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Sunday, March 11th, 2007 AT 9:26 PM

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