MY SPEEDOMETER IS WACK AND SO IS MY GAS GAUGE

MY SPEEDOMETER IS WACK AND SO IS MY GAS GAUGE? WHATS UP WITH THE 87-93
MUSTANGS WITH THE GAS GAUGE SPEEDOMETER RPM AND EVEN THE MILEAGE GOING
OUT? CAN SOMEONE OFFER SOME ADVICE ON HOW TO TROUBLESHOOT THESE PAIN IN
THE NECK AREAS. ESPECIALLY THE GAS. I LITERALLY HAVE TO RUN OUT OF GAS
IN ORDER TO KNOW IF I NEED MORE. SOMEONE HELP ME OUT PLEASE!!! THANKS A
BUNCH.
-FELLOW STANG LOVER

I may not be much help, the guages in my 87 Mustang have been well behaved.
But the fuel guage in my '93 Escort hasn't worked in the whole time I've
owned the car (3+ years). What I do is set the trip odometer to 0 when I
fill the gas tank. At about 300 miles I refill the tank...
Good Luck!
-=RaOuL

"'87-STANG-IN-S.A." > wrote in message
ups.com...
> MY SPEEDOMETER IS WACK AND SO IS MY GAS GAUGE? WHATS UP WITH THE 87-93
> MUSTANGS WITH THE GAS GAUGE SPEEDOMETER RPM AND EVEN THE MILEAGE GOING
> OUT? CAN SOMEONE OFFER SOME ADVICE ON HOW TO TROUBLESHOOT THESE PAIN IN
> THE NECK AREAS. ESPECIALLY THE GAS. I LITERALLY HAVE TO RUN OUT OF GAS
> IN ORDER TO KNOW IF I NEED MORE. SOMEONE HELP ME OUT PLEASE!!! THANKS A
> BUNCH.
> -FELLOW STANG LOVER
>

'87-STANG-IN-S.A. wrote:
> MY SPEEDOMETER IS WACK AND SO IS MY GAS GAUGE? WHATS UP WITH THE
87-93
> MUSTANGS WITH THE GAS GAUGE SPEEDOMETER RPM AND EVEN THE MILEAGE
GOING
> OUT? CAN SOMEONE OFFER SOME ADVICE ON HOW TO TROUBLESHOOT THESE PAIN
IN
> THE NECK AREAS. ESPECIALLY THE GAS. I LITERALLY HAVE TO RUN OUT OF
GAS
> IN ORDER TO KNOW IF I NEED MORE. SOMEONE HELP ME OUT PLEASE!!! THANKS
A
> BUNCH.


You just need to drop the gas tank and replace the sending unit.

Weird the speedo and the tach would both go out. Sure a previous owner
didn't try some creative, under-dash, wiring project?

Oh, and lost the caps. It isn't polite in newsgroup land.

Patrick
'93 Cobra

GET A SENDING UNIT FOR THE GAS GAUGE, AND PLEASE STOP POSTING IN CAPS.

Got a multimeter for the others?

Get an authentic '87 shop manual and poke around a bit with one. It may
be because of the gas gauge fault, so you may have a general PCB fault
in the gauge cluster causing it, too... my guess...

Froggie Dwight? Are you listening? Any suggestions?

'87-STANG-IN-S.A. wrote:
> MY SPEEDOMETER IS WACK AND SO IS MY GAS GAUGE? WHATS UP WITH THE 87-93
> MUSTANGS WITH THE GAS GAUGE SPEEDOMETER RPM AND EVEN THE MILEAGE GOING
> OUT? CAN SOMEONE OFFER SOME ADVICE ON HOW TO TROUBLESHOOT THESE PAIN IN
> THE NECK AREAS. ESPECIALLY THE GAS. I LITERALLY HAVE TO RUN OUT OF GAS
> IN ORDER TO KNOW IF I NEED MORE. SOMEONE HELP ME OUT PLEASE!!! THANKS A
> BUNCH.
> -FELLOW STANG LOVER
>


--
Wound Up
ThunderSnake #65

wrote:
> '87-STANG-IN-S.A. wrote:
>
>>MY SPEEDOMETER IS WACK AND SO IS MY GAS GAUGE? WHATS UP WITH THE
>
> 87-93
>
>>MUSTANGS WITH THE GAS GAUGE SPEEDOMETER RPM AND EVEN THE MILEAGE
>
> GOING
>
>>OUT? CAN SOMEONE OFFER SOME ADVICE ON HOW TO TROUBLESHOOT THESE PAIN
>
> IN
>
>>THE NECK AREAS. ESPECIALLY THE GAS. I LITERALLY HAVE TO RUN OUT OF
>
> GAS
>
>>IN ORDER TO KNOW IF I NEED MORE. SOMEONE HELP ME OUT PLEASE!!! THANKS
>
> A
>
>>BUNCH.
>
>
>
> You just need to drop the gas tank and replace the sending unit.
>
> Weird the speedo and the tach would both go out. Sure a previous owner
> didn't try some creative, under-dash, wiring project?
>
> Oh, and lost the caps. It isn't polite in newsgroup land.
>
> Patrick
> '93 Cobra
>

Shouldn't that have been "whack" and the last time I looked,
"whack" was a verb, not an adjective, wasn't it??

--
2.3Sleeper: "Anyone know how to disable the daytime
running lights on a 2001 Crown Vic or on a 2002 GMC?"

SVTKate: "A ball peen hammer?"

wrote:

> You just need to drop the gas tank and replace the sending unit.

Not necessarily. The gas gauge on my 1991 GT croaked, and it wasn't the
sending unit. Wasn't the gauge itself, either. It ended up being the
small circuit board (which exists in the 1987 model as well, but they
can't be swapped for one another due to how they attach to the wiring)
that sits between the sender and the gauge. I believe it's used to
dampen the fluctuations that would occur due to the fuel level moving about
due to motion of the vehicle. But, whatever its actual purpose, mine
broke and rendered the gauge useless.

You should verify that the sender is, in fact, trashed before dropping the
tank to replace it. This can be verified easily enough by inserting an
ohmmeter into the circuit and seeing if the sender is reporting the correct
resistance for various fuel levels. I think the range for those years of
Mustangs was 20 to 150 ohms, but don't quote me on that.

> Weird the speedo and the tach would both go out. Sure a previous owner
> didn't try some creative, under-dash, wiring project?

As the 1987 had a mechanical speedometer, it's unlikely a simultaneous
tach and speedo failure would be related. I'm not surprised at the speedo
failure, as mine has died twice. According to the repair shop I took it
to the first time, "It's a Ford mechanical speedo. They just break." The
bridge on mine was all bent out of shape, which first caused the needle
to bounce and then caused it to outright go nuts and then freeze up. The
odometer continued to work fine, however. I'm switching to an Auto Meter
electric speedo.

The speedo in 87-93 mustangs are mechanical. You should check your
speedometer cable, it connects to the back of the cluster and runs
through the firewall down to the side of the transmission and into the
speed sensor. I bet it is your cable, but I have seen the drive gear
on the tail section of the transmission slip back to where it is no
longer making connection with the speedo driven gear. to check the
speedo, pull the cluster out and drive it around the block and see if
the cable is rotating. As for your fule gauge, replace the fuel
sending unit , it is located inside the gas tank, you have to drop the
gas tank and access it from the top side of the gas tank. It is a easy
fix. The part costs $75.00 at a Ford parts dealer.





On Fri, 18 Feb 2005 03:46:31 GMT, Wound Up > wrote:

>GET A SENDING UNIT FOR THE GAS GAUGE, AND PLEASE STOP POSTING IN CAPS.
>
>Got a multimeter for the others?
>
>Get an authentic '87 shop manual and poke around a bit with one. It may
>be because of the gas gauge fault, so you may have a general PCB fault
>in the gauge cluster causing it, too... my guess...
>
>Froggie Dwight? Are you listening? Any suggestions?
>
>'87-STANG-IN-S.A. wrote:
>> MY SPEEDOMETER IS WACK AND SO IS MY GAS GAUGE? WHATS UP WITH THE 87-93
>> MUSTANGS WITH THE GAS GAUGE SPEEDOMETER RPM AND EVEN THE MILEAGE GOING
>> OUT? CAN SOMEONE OFFER SOME ADVICE ON HOW TO TROUBLESHOOT THESE PAIN IN
>> THE NECK AREAS. ESPECIALLY THE GAS. I LITERALLY HAVE TO RUN OUT OF GAS
>> IN ORDER TO KNOW IF I NEED MORE. SOMEONE HELP ME OUT PLEASE!!! THANKS A
>> BUNCH.
>> -FELLOW STANG LOVER
>>

You are talking about the small circuit board on the back of the
gauge cluster that is mounted with one screw. Yes you are right, I
forgot about tha being the the brain for the fuel level and oil
pressure gauge. But I bet in this guys case the fuel sending uint is
wore out. Think about how many times by now that the contact of the
sender has rubbed back and forth. I am sure by now it has rubbed
through the contact strip on the ceramic in the sender.








On Sat, 19 Feb 2005 02:49:12 GMT, The Hurdy Gurdy Man
> wrote:

wrote:
>
>> You just need to drop the gas tank and replace the sending unit.
>
>Not necessarily. The gas gauge on my 1991 GT croaked, and it wasn't the
>sending unit. Wasn't the gauge itself, either. It ended up being the
>small circuit board (which exists in the 1987 model as well, but they
>can't be swapped for one another due to how they attach to the wiring)
>that sits between the sender and the gauge. I believe it's used to
>dampen the fluctuations that would occur due to the fuel level moving about
>due to motion of the vehicle. But, whatever its actual purpose, mine
>broke and rendered the gauge useless.
>
>You should verify that the sender is, in fact, trashed before dropping the
>tank to replace it. This can be verified easily enough by inserting an
>ohmmeter into the circuit and seeing if the sender is reporting the correct
>resistance for various fuel levels. I think the range for those years of
>Mustangs was 20 to 150 ohms, but don't quote me on that.
>
>> Weird the speedo and the tach would both go out. Sure a previous owner
>> didn't try some creative, under-dash, wiring project?
>
>As the 1987 had a mechanical speedometer, it's unlikely a simultaneous
>tach and speedo failure would be related. I'm not surprised at the speedo
>failure, as mine has died twice. According to the repair shop I took it
>to the first time, "It's a Ford mechanical speedo. They just break." The
>bridge on mine was all bent out of shape, which first caused the needle
>to bounce and then caused it to outright go nuts and then freeze up. The
>odometer continued to work fine, however. I'm switching to an Auto Meter
>electric speedo.