2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

Speedo cable/power steering question

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Old Aug 30, 2007 | 04:14 PM
  #1  
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Speedo cable/power steering question

ok so my speedometer/odometer no longer work because the speedo cable broke of... now my question is will this effect the power steering beacuse my car will lose power steering after about 5 mins of driving.

i searched this for a bit and could get a clear answer so any help would be appreciated

thanks in advance
ramon
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Old Aug 30, 2007 | 06:21 PM
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does anyone have a clue about this
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Old Aug 30, 2007 | 08:46 PM
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I would suspect that you have a problem with either the PS pump or the rack.

Since you have a TII I think you have vehicle speed sensing PS.
If so, it would seem logical that a broken speedo cable would trick the system into thinking you were always at rest, thus it would always apply maximum PS assist, not go away entirely.

I could be totally wrong about that though.

Even so, presumably you'll be replacing the speedo cable soon which should clear this up.

If the new cable doesn't fix the issue (and I'm guessing it won't) then you'll have to begin troubleshooting the PS system itself.
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Old Nov 20, 2007 | 10:12 PM
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i am having this exact same problem! no speedo at all and power steering goes away a lil after driving.. please let me know if you figure out what the problem was!
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Old Nov 20, 2007 | 11:46 PM
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The speedo cable measures/transmits revs from the transmission.

The PS gets its information from discs mounted on the hubs or the motor itself (rpm based system ftl).

It seems unlikely that a broken speedo cable could CAUSE the PS to go out.
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Old Nov 28, 2007 | 03:43 PM
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From: SoMa, SF
My speedo cable is disconnected or broken and I have the same power steering drop-out.

Need to fix or replace the bastiche. How is what I'm researching...
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Old Nov 28, 2007 | 07:31 PM
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Mechanic charged me $30 to replace a missing speedo cable. Said it would have been $10 if my speedo cable was merely disconnected. In the latter case it takes you a couple minutes to simply screw it back on. Just replace the speedo cable and then see if the PS is still bad.

How do you know if your speedo cable is still there? Look under your car at the tranny and try to screw it back on. If there's nothing to screw on, just a dangling empty sleeve, then your speedo cable is gone. You could do a forum search to find out how. Involves some acrobatics behind the dash IIRC. Or just pay the $30.
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Old Nov 28, 2007 | 11:39 PM
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doesn't the FC have speed sensitive Power steering?..I would Assume that the computer would have to read it from Somewhere.and that Place must be the Speedo,.That may explain your PS Problem..Solution would be to get another Speedo cable in or #2: disconnect the Power steering computer(Which I had to Say,But I do NOt Recommend..why hav emore **** Unhooked right?)
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Old Nov 29, 2007 | 04:21 AM
  #9  
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Originally Posted by sharingan 19
The PS gets its information from discs mounted on the hubs...
No, the PS controller gets a speed signal from the speedo, same as the cruise control and AAS controller. So without a speedo cable the PS controller has no speed info, and this will cause it to revert to minimum assistance.

Fix the speedo cable and the PS will work properly.
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Old Jan 18, 2008 | 06:38 PM
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Word! I had to bump this because this solved my problem. Yet again more proof that the search button works amazingly! A broken speedo will causae your power steering to stop working properly.
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