speedometer problem
Thread Starter
|
New User
Joined: Jan 2010
Posts: 10
Likes: 0
speedometer problem
Hey I am new to this forum but i have a few questions about my speedo on my 2001 F250 automatic tranny. I put in a new tranny on it and the o/d light is blinking and the sel light is on and the speedo doesn't work. I took it to ford and they checked the codes, they were-P0500 speed sensor malfunction, P1502speed sensor intermitant and P1464 AC demand out of range. The service tech said he never saw or heardabout the AC demand code before, any ideas?
Also the tech said that each wheel had a speed sensor and they were about $80 a piece. I really dont think there is a sensor on each wheel assembly, but I could be wrong, where are the sensors located or is it just the one the rear end. Any help is greatly appreciated mike
Also the tech said that each wheel had a speed sensor and they were about $80 a piece. I really dont think there is a sensor on each wheel assembly, but I could be wrong, where are the sensors located or is it just the one the rear end. Any help is greatly appreciated mike
Lead Driver
Joined: Jul 2003
Posts: 7,406
Likes: 52
From: Wheatland, Mo
There is a sensor on the tranny and one on the rear diff. Try changing out the one on the rear diff first....cheapest and easiest.
Did you do the tranny or a shop? If a shop I would have them check their work. Could of missed plugging in the sensor on the tranny.
And what the other guys said. The tech was prolly thinking about the ABS sensor. VSS is the tranny and rear diff.
Did you do the tranny or a shop? If a shop I would have them check their work. Could of missed plugging in the sensor on the tranny.
And what the other guys said. The tech was prolly thinking about the ABS sensor. VSS is the tranny and rear diff.
Thread Starter
|
New User
Joined: Jan 2010
Posts: 10
Likes: 0
thanks for the input. I just replaced the vss on the differential and the sensor on the transfer case adapter. I had a shop rebuild but I installed it, the sensor was connected to the tranny before I installed it. I will try the one on the tranny, but I have a gut feeling that the ring sensor might be damaged. The vss on the differential had some sludge and some small metal shavings on it(has 175,000 miles on it). I will probably pull the cover and check it just for peace of mind. Any thoughts?
Thread Starter
|
New User
Joined: Jan 2010
Posts: 10
Likes: 0
new vss sensor put in and checked the ring gear, wanted to change fluid anyway. The vss sensor connector is a swivel one, so I am wondering if the contacts are bad or there could be a bad connection. The speedometer actually worked for me when I went to get gear oil for rear end, then stopped working again.
Trending Topics
Lead Driver
Joined: Jul 2003
Posts: 7,406
Likes: 52
From: Wheatland, Mo
new vss sensor put in and checked the ring gear, wanted to change fluid anyway. The vss sensor connector is a swivel one, so I am wondering if the contacts are bad or there could be a bad connection. The speedometer actually worked for me when I went to get gear oil for rear end, then stopped working again.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
Thread Starter
|
New User
Joined: Jan 2010
Posts: 10
Likes: 0
I was thinking that last night, my brother in law put a 2009 bed on it and I wonder if he nicked a wire, the problem started after that, thanks for the heads up I am going to test the wiring harness tomorrow.
Thread Starter
|
New User
Joined: Jan 2010
Posts: 10
Likes: 0
Well I checked the harness from the vss sensor on the rear diff. to the harness plug in the engine compartment with a continuity tester and it is fine. I will try to locate the wires underneath the dash to make sure they are not damaged. Anybody know what the magnetic pick up on top of the tranny is for, I have replaced the vss on the diff and the sensor on the transfer case adaptor, starting to drive me crazy
Thread
Thread Starter
Forum
Replies
Last Post
myakkacracka
Clutch, Transmission, Differential, Axle & Transfer Case
13
Jun 16, 2016 11:33 AM
flare-f150
1997 - 2003 F150
1
Jul 20, 2015 06:42 PM
Yahiko
6.0L Power Stroke Diesel
141
Mar 12, 2015 12:36 AM
myakkacracka
1987 - 1996 F150 & Larger F-Series Trucks
6
Mar 17, 2014 07:35 AM
BlackJeep
1999 - 2003 7.3L Power Stroke Diesel
50
Jun 18, 2008 05:22 PM
