2000 Other Saturn Models Speed sensor.....is that all that i

2000 SATURN
12,000 MILES • 4 CYL • FWD • MANUAL
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SSHMALONE
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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?
Apr 12, 2008 at 11:25 PM
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MERLIN2021
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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!
Apr 13, 2008 at 7:19 AM
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SERVICE WRITER
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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.
Apr 13, 2008 at 7:22 AM
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