[Car Mechanic Vanity] Need FReeper Gear-Head advice on '97 Mustang odo- speedo- meter issue

The Ford Factory ^ | 09/16/2009 | blueflag

[Blueflag]

Question for FReeper gearheads:

I have a beloved '97 Mustang V6 automatic. The speedo and tach work just fine, but both odometers have simultaneously ceased to advance.

I am used to British Leyland/ Morris Garage vehicles wherein a cable ran from the transmission case to the back of said devices. None exist on the Mustang, just an electrical connection/wiring to a 'speed sensor' on the housing.

What do you think has failed? Please apply Ockham's razor. Has the speed sensor likely failed, or is this a ghastly remove the dash and replace the speedo/tach assembly?

Many thanks for your advice.

[Blueflag]

Question for FReeper gearheads:

I have a beloved '97 Mustang V6 automatic. The speedo and tach work just fine, but both odometers have simultaneously ceased to advance.

I am used to British Leyland/ Morris Garage vehicles wherein a cable ran from the transmission case to the back of said devices. None exist on the Mustang, just an electrical connection/wiring to a 'speed sensor' on the housing.

What do you think has failed? Please apply Ockham's razor. Has the speed sensor likely failed, or is this a ghastly remove the dash and replace the speedo/tach assembly?

Many thanks for your HELPFUL advice, as this is hugh and series.

[A. Morgan]

http://www.3.8mustang.com/forum/showthread.php?t=168525

[DuncanWaring]

If the cost/effort to replace the speed sensor are relatively modest, swap that out first and see if that fixes it.

[A. Morgan]

http://www.simcoltd.com/aftermarket-products/ford-mustang/1996-1998/

[PUGACHEV]

Without looking at a manual, I would guess that the tach feed comes off the distributor or the crankshaft position sensor, while the speedo works off of the transmission. This makes it unlikely that there is one sensor that has failed which would account for both the speedo and the tach not working.

[Blueflag]

Well phine. Looks like a dash-out job to replace a $.57 gear.

Thanks for the link!!!!

[Blueflag]

Thanks. That link is specific to the GT. Mine is an LS convertible. But I appreciate a connection to the site and I’ll crawl around there for goodies.

[Blueflag]

LOL those gears are priced at 25 DOLLARS apiece. I am gonna try another source ;-)

[Blueflag]

Many thanks! The dash assembly came out quite easily, and indeed the main drive gear had reduced itself to crumbling putty.

I ordered the gears from an outfit in Bossier City, LA. $39.50 plus $7 shipping. Ouch! But a lot better than $500 at the Ford dealer.

Once the gears come in, it’s about a 30 min total time to repair.

Once again FReerepublic comes through!

[A. Morgan]

Cool!

[gilor]

Your muffler bearings are shot.

[Blueflag]

And so are the cyclic hemorrhoidal gears on the camber shafts