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2000 Other Saturn Models Speed sensor. Is that all that I

Tiny
SSHMALONE
  • MEMBER
  • 2000 SATURN
  • 4 CYL
  • FWD
  • MANUAL
  • 12,000 MILES
A while back, my "Check Engine" light began to turn on intermittently, causing my speedometer to cease working and cause my fan to run constantly with a high whirring noise. The funny thing is, I never have a problem with it when ithe weather is damp and rainy, only when it is dry and sunny. I had my car checked by a mechanic recently, and he scanned for a code, which came up "Speed sensor". He has ordered the replacement sensor and I will have that replaced when it arrives. I was just curious if anyone can advise why I have this problem based on weather changes, and if the sensor being replaced will eliminate the problem of the fan?
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Saturday, April 12th, 2008 AT 11:25 PM

2 Replies

Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
It should solve the speedo problem, but questionable if it will solve the fan problem! Check the fan relay(s) some GM, Saturns use three. And if the A/C controls are on, the fan will run all the time!
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Sunday, April 13th, 2008 AT 7:19 AM
Tiny
SERVICE WRITER
  • MECHANIC
  • 9,123 POSTS
Sounds like 2 separate problems. I don't see a relationship between a speed sensor and the fan. Not to say that there isn't one.

The noise sounds like a dry bearing in the fan. When it is damp out the little extra moisture acts as a temporary lubricant. My guess is the fan motor is on it's way out if it is whining.
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Sunday, April 13th, 2008 AT 7:22 AM

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