Okay, last time I filled up I reset my trip meter. Well its not rolling over, so I wrote down my odometer reading (168,852) and used that to calculate my mileage. Well 3 days later on my way to Wally-World I look down and my mileage displays as: 168,862. WTF? So basically my truck's value has stopped decreasing, but I don't want it broken. Trip meter and odometer not working. What to do. Dad says the cable might have fallen off the trannie, and since I just had a new trannie put in with a years warranty, couldn't I take it to Ford and have them fix it for free? Dunno if this is a good or bad thing.

 

I'd go get it fixed...

 

with the amount of miles on yoru truck it really will not hurt the value adding some more miles on it.

 

Are you driving in reverse?

 

X2.

And I'd probably get it fixed just for peace of mind...

 

It is actually illegal to drive without a working Odometer. This fact that it isn't working will cause you trouble if you decide to get rid of it.. It is like odometer fraud because the next owner doesn't know how many miles are actually on the truck. You really should get it fixed soon.

 

Does the speedo work? If it does it is not the cable.

 

Yes speedo works. I want it fixed just for general knowledge, because it sucks when something so little is gone wrong (burnt out 3rd brake lights, Chevy DRL's and license plate bulbs drive me INSANE!) and I just want it fixed. Is it a possibility that its a worm gear behind it? 10 years and counting....

 

The speedometer isn't cable driven on a '98. If the speedometer works though, the odometer is dead, gotta replace the cluster/speedo head.

 

Pinpoint Test L: The Speedometer/Odometer Is Inoperative

Normal Operation

Vehicle speed information is sent to the powertrain control module (PCM) from the ABS module. The instrument cluster receives the vehicle speed data from the PCM over the controller area network (CAN), circuits 1827 (WH/LG) and 1828 (PK/LG).

Possible Causes

PCM
instrument cluster
Just a shot in the dark, but maybe has someting to do with the trans repair.
PINPOINT TEST L: THE SPEEDOMETER/ODOMETER IS INOPERATIVE
Test Step Result / Action to Take
L1 RETRIEVE THE RECORDED DTCS FROM BOTH CONTINUOUS AND ON-DEMAND POWERTRAIN CONTROL MODULE (PCM) SELF-TESTS
Use the recorded PCM DTCs from the continuous and on-demand self-tests.
Are any PCM DTCs recorded?
Yes
REFER to Powertrain Control/Emissions Diagnosis (PC/ED) manual to continue diagnosis.

No
For inoperative speedometer, GO to L2 .

For inoperative odometer, GO to L3 .
L2 CARRY OUT THE SPEEDOMETER ACTIVE COMMAND USING THE DIAGNOSTIC TOOL
Connect the diagnostic tool.
Key in ON position.
Enter the following diagnostic mode on the diagnostic tool: Instrument Cluster Active Command.
Select the instrument cluster speedometer active command.
Trigger the speedometer and scroll in increments of 10% while monitoring the speedometer. The speedometer should increase in increments of approximately 20 km/h (12 mph) for each 10% change.
Does the speedometer increase within specifications?
Yes
GO to L4 .

No
GO to L5 .
L3 MONITOR THE INTEGRATED CIRCUIT DISPLAYS
Key in ON position.
Monitor the compass, air temperature and message center functions of the integrated circuit display.
Do the compass, air temperature or message center displays operate correctly?
Yes
GO to L5 .

No
Go To Pinpoint Test AE .
L4 CHECK FOR CORRECT PCM OPERATION
Disconnect all PCM connectors.
Check for:
corrosion
pushed-out pins
Connect all PCM connectors and make sure they seat correctly.
Operate the system and verify the concern is still present.
Is the concern still present?
Yes
INSTALL a new PCM. REFER to Section 303-04A (4.6L) or Section 303-04B (5.4L). TEST the system for normal operation.

No
The system is operating correctly at this time. Concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test.
L5 CHECK FOR CORRECT INSTRUMENT CLUSTER OPERATION
Disconnect all instrument cluster connectors.
Check for:
corrosion
pushed-out pins
Connect all instrument cluster connectors and make sure they seat correctly.
Operate the system and verify the concern is still present.
Is the concern still present?
Yes
INSTALL a new instrument cluster. REFER to Instrument Cluster in this section. TEST the system for normal operation.

No
The system is operating correctly at this time. Concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test.

Pinpoint Test M: The Tachometer Is Inoperative

Normal Operation

Engine rpm data is provided to the instrument cluster by the powertrain control module (PCM) through the controller area network (CAN), circuits 1827 (WH/LG) and 1828 (PK/LG).

Possible Causes

PCM
instrument cluster

 

So I have to get a new cluster? I'd like to get an Expy one with a tach if so!

Do you guys think I should take this by Ford? I'm hoping my trannie warranty can cover it. I dont want it to be taken in and come back with like a $500 bill because I have no money.