could the speed sensor affect the speedo to miss read and sometimes not work at all?

40

Asked by Mar 26, 2015 at 10:50 PM about the 2005 Buick LeSabre Custom

Question type: Maintenance & Repair

Driving and sometime the speedo reads 80 but going 30mph and then it does not work at
all while driving.

9 Answers

59,205

Absolutely. You do not have a speedometer cable. The vehicle speed sensor, at the transmission, sends a signal to the computer. The computer then positions the speedometer needle based on the signal from the vehicle speed sensor. HTH. -Jim

7 out of 7 people think this is helpful.
Best Answer
40

Thank you

1 out of 1 people think this is helpful.
59,205

You're welcome. Glad to help. Thank you for the best answer click. - Jim

this only happens at speeds above 60mph at lower speeds it works fine.

59,205

It's very likely that the sensor has lost it's calibration. HTH. - Jim

6 out of 6 people think this is helpful.
40

Changed the speed sensor located on the transmission, still have the problem. Speedo is pointed almost straight down not at zero. Anymore suggestions?

3 out of 3 people think this is helpful.
59,205

I'm sorry to hear that! The only other 2 things it can be is the instrument cluster or the BCM (Body Control Module). Unfortunately the speedo isn't serviceable by itself. HTH. -Jim

1 out of 1 people think this is helpful.
10

Mine is doing similar. It is not a fuse or anything....ha. Just all of a sudden went bazerk. Hit 130mph and others are at 80- 90mph.???!?!?! What to do

1 out of 1 people think this is helpful.

It is the Stepper Motor. Your best bet is to send it out for repair. someone like this http://drspeedometer.com or this http://www.speedometerrepairguy.com/pricing.htm or many others that you can find on the internet.

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