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speed ometer not working

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TSAPP
New User

Mar 11, 2011, 1:40 PM

Post #1 of 2 (1278 views)
speed ometer not working Sign In
i have a98 chevy s10 2.2 replaced the vss and tghe pigtail but still cant get the speedo to work if i put direct power to the speedo it will work i spliced into the wires up by the pcm and then to the vss and that didnt make it work could the pcm b bad.i took it to a shop and they put it on a computer and said the vss was working bit nothing from thepig tail to the pcm the said change the pigtail i did that and nothing has changed can someone help me on this one


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Mar 11, 2011, 2:17 PM

Post #2 of 2 (1268 views)
Re: speed ometer not working Sign In
Quote
i put direct power to the speedo it will work
I don't know what you did there but you're probably pretty lucky if you didn't fry half the cluster. The speedo works from a logic module on Pulse Width Modulation. You're going to need a high grade scan tool to be able to test anything there.



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