1994 Nissan Altima speedometer inoperative

1994 NISSAN ALTIMA
97,000 MILES • 4 CYL • FWD • AUTOMATIC
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MDJ67
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  • 3 POSTS
I have a 1994 altima with heads up display. the speedo is not working, the previouse owner replaced the instrument panel cluster and the ecm, then gave up. with a scan tool you can read the miles per hour, so I think the vehicle speed sensor is ok. not sure where to go with this??? any help
Oct 14, 2008 at 8:03 AM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
How can the VSS be good when the vehicle is not moving-the VSS is on the transaxle it has to generate a signal before the computer knows the speed of the vehicle. Better check it remove it and spin it-speedo needle should fluctuate
Oct 14, 2008 at 8:11 AM
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MDJ67
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the vehicle runs and drives, with a scan tool hooked up and driving it shows speed, thats why I thought vss was ok
Oct 14, 2008 at 8:15 AM
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RASMATAZ
  • ✓Experienced Mechanic
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Have you taken it out and spin it if so might be just the speedo out of calibration
Oct 14, 2008 at 10:44 AM
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MDJ67
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well, I pulled the vss and spun it - absolutely nothing, I plugged in a new vss and the same results. So, now there is a new vss, ecm, and dash cluster - if its calibration, how do I do that? Thanks for any help.
Oct 21, 2008 at 1:08 AM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
dash cluster-This are you talking about the speedometer assembly-recommend you check the wires for shorts/open
Oct 21, 2008 at 7:35 AM
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