WHAT WOULD MAKE A SPEEDOMETER READ INCORRECTLY?

2001 Pontiac Grand Am

Tiny

nkbraswell

November, 9, 2011 AT 10:49 PM

I have a pontiac grand am that the speedometer is reading faster than I am going. It's about 2 mph off, under 50, and 5 mph over 50. All other gauges seem to work just fine, and tires are the correct size.

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Tiny

ASEMaster6371

November, 9, 2011 AT 11:17 PM

Have you had any transmission work done lately?

There is a speed sensor for the speedometer that may be reading wrong or has the wrong ring for the speedometer.

Roy

Tiny

BILLYBOB

November, 10, 2011 AT 12:42 AM

HAVE YOU PUT OVER SIZED TIRES ON IT? IF SO THAT WOULD CHANGE IT

Tiny

nkbraswell

November, 10, 2011 AT 10:31 PM

No tranny work or over sized tires. I didn't know how long it has been wrong. I got pulled over the other day. The officer said I was going 66, but I had the cruise set at 60. So I downloaded a GPS speed tracking app. It seems to confirms the problem.

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