Automatic Tranny Woes

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Mar 11, 2011 | 08:46 PM

TheTowingCowboy

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Fleet Mechanic

Joined: Mar 2007

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From: Meigs County Ohio

Automatic Tranny Woes

I was talking to a buddy of mine (Who put a 7.3 in a 67 F250) and he was telling me that the VSS send a signal to the speedometer, then the speedometer changes the signal type and sends it to the tranny to tell it when to shift. Is this true or not? Cause I want to have to use the dash from the 95 nor do I want to use the cluster, I plan on making the highboy a minature semi. So all help I can get would be appreciated.

Mar 11, 2011 | 09:47 PM

oldbird1965

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Joined: Aug 2004

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From: AZ

I think the VSS sends the signal to the PCM and PCM sends it to the speedo. The rest I don't know. In fact, I don't know for sure if my first sentence is correct? LOL

Mar 11, 2011 | 11:31 PM

chicagodragon

Logistics Pro

Joined: Jun 2009

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From: metairie, LA

iam pretty sure the pcm/vss tells the tranny when to shift. not the speedo.

Mar 12, 2011 | 01:06 AM

BuckHammer

Cargo Master

Joined: Jul 2010

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I think Glenn is right here.

Mar 12, 2011 | 09:34 AM

TheTowingCowboy

Thread Starter

Fleet Mechanic

Joined: Mar 2007

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From: Meigs County Ohio

Okay so I shouldnt need the speedometer from the 95, jsut get one that will read the signal from the PCM? Hope you all are right!!

Mar 12, 2011 | 05:50 PM

glasseater

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From: hillsborough nj

i can't see a reason why the 95 dash WON'T work
edit: whoops i think i misread your post... but i would think that anything from the 94.5-97 year range would work fine