Speedometer bouncing [Archive] - GrandAmGT.com Forum

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Chevylover54
10-14-2008, 05:54 PM
Today I noticed the needle on my speedometer bouncing when I went across bumps. It seems that if I'm accelerating it will bounce up but if I'm braking it will bounce down. I recently replaced both the front hub assemblies so I don't think it's the speed sensors in them. But of course I could have gotten a bad one.

Is there speed sensors in the back hub assemblies? Could one of those be bad and cause this or am I looking in the wrong spot.

I guess it could be some sort of wire loose or something like that. Any ideas?

badboy2451
10-14-2008, 06:45 PM
check your battery terminals...one could be loose and clean out any corrosion

gagt Mechanic
10-14-2008, 11:44 PM
your car has five speed sensors, one on the diff, and one on each tire, your speed usually works off the one on the diff.