Re: [Amc-list] OT: Ford Speedometer issues

[Wrambler242@xxxxxxxxxxx]

Bouncing a little is usual cable needs lubed.
Bouncing violently is usually the speedo head itself.
No movement and the gear is new could be,
Bad cable
Bad speedo head
Drive gear on the trans output is bad, stripped or slipped.
Driven gear is wrong one.

I'd start by checking under the dash to make sure it is connected.
Then check at the trans.
Then take the cable off at the trans if it comes off or pull the cable and gear. Spin it.
Have someone watch for speedo movement, not sure which way to spin it? Spin it both ways, it won't hurt anything.
Then try to narow down what is actually not working.
Usual suspect is the cable, but that description as given him by the seller says speedo head to me.
--
Mark Price
Morgantown, WV
1969 AMC Rambler, 4.0L, EFI, T-5
2004 Grand Cherokee Laredo, 4.7L, Quadratrac II
" I realize that death is inevitable.
I just don't want to be around when it happens! "

 -------------- Original message ----------------------
From: Jim Blair <carnuck@xxxxxxxxxxx>
> 
> Same as any other speedo, including Ramblers. Check to see if the speedo pulled 
> out of the back of the dash.  (sometimes the nut separates from the cable) See 
> if the cable moves when driving. (if not, then either the cable is bad, wiping 
> out the gear in the trans, or the guy misrepresented fixing said gear) Could be 
> he put the wrong gear in the trans too. IIRC, you had to change both the drive 
> gear and the driven gear in Ford trans as a pair (numerically matched)
> 
> Jim Blair, Lynnwood, WA '87 Comanche, '83 Jeep J10, '84 Jeep J10
> 
> From: "Jamie Smith" 
> Subject: [Amc-list] OT: Ford Speedometer issues
> To: 
> Message-ID: 
> Content-Type: text/plain; charset="iso-8859-1"
> 
> My boss bought another truck today and I had the duty of driving the 25 miles 
> back from Post Falls, ID to Spokane, WA.
> 
> The guy he bought it from had told us that the speedometer quit working and he 
> replaced the gear and it still didn't work right, just bounced all over the 
> place. Well, the whole trip home the needle never moved, just pointed straight 
> down.
> 
> I would love any suggestions on what could be wrong. It is a 1991 Ford F-150 
> Lariat XLT 4X4 with 302 V-8 and auto transmission.
> 
> And while I am on this subject, I had asked for advice about another Ford truck 
> he had a couple years ago (which also happened to be a 1991 F-150 Lariat XLT but 
> with a 300 6 cylinder). It was hard starting and had no power and kept filling 
> the cylinders with fuel. After having it to a Ford dealer and another shop and 
> both charging a bunch of money to say they didn't know what was wrong he took it 
> to the automotive department of the community college. It took them a complete 
> school year to finally forget what the diagnostic tools were saying and open up 
> the engine but it turned out to be a blown head gasket (blown between 
> cylinders).  He still has that truck but now the transmission is bad so he is 
> going to park it until spring and then have the transmission rebuilt in the 
> spring.
> 
> Thanks in advance for any advice on the speedometer issue.
> 
> Jamie
> 
> 
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