speedometer/transmission
Thread Starter
|
New User
Joined: Mar 2005
Posts: 3
Likes: 0
speedometer/transmission
i have just purchased a black 93 bronco 351w with an automatic/od, the truck runs and sounds great. the only problems i havent been able to fix are the speedometer and transmission. when i bought the truck the speedometer and odometer didnt work, and on the way home i felt the truck shifting hard. also my ABS light is on. i read some where this all could be related to an ABS sensor, but i have no clue. please post your thoughts -is it all related?- or -is it a series of different things?-
Lead Driver
Joined: Sep 2002
Posts: 9,182
Likes: 12
From: Gateway to the West
You are dealing with a failed or dirty VSS (Vehicle Speed Sensor). Its mounted in the top of the rear axle housing and has a two-wire connector. This sensor relays (obviously) speed information to the PCM which in turn determines shift points and generates the signal to the speedometer. The information is also sent to the ABS computer for wheel-slip information. Yeah, one sensor and it does all that.
Fleet Mechanic
Joined: Aug 2001
Posts: 1,526
Likes: 0
From: Round Rock, TX
Wiring problem between the VSS and the PSOM (speedometer). Blown ABS fuse. Bad or unplugged PSOM.
Check your fuses, including the ones under the hood (the one for the cluster is under the hood), and if those all check out, start at the sensor and follow the wires to the cluster.
Check your fuses, including the ones under the hood (the one for the cluster is under the hood), and if those all check out, start at the sensor and follow the wires to the cluster.
Hotshot
Joined: Jul 2002
Posts: 14,285
Likes: 12
From: Bend,OR
the tone ring in your rear diff could be messed up causing the vss to not work properly. pull the rear cover and inspect it. the vss may still need replaced to just because its clean doesnt mean its working
New User
Joined: May 2005
Posts: 4
Likes: 0
Same problem here....that's why I didn't start a new thread. Sensor has been replaced 3 times and STILL boinks out on me. It will reset in about 20 minutes but, until then, I lose my speedometer, odometer, cruise control, and overdrive. It will only reset if the truck is shut off.........a real PITA on a trip. Dealer though they found the problem.......driveshaft installed backwards in Fla. which caused excessive vibration. Since then, it has only messed up once. Dealer pulled the cover off the rear end, replaced oil and inspected, but found no problem. Thsi is a constant irritant and I want to fix it before I do much else to this truck........guy thing, lol. Any thoughts?
Hotshot
Joined: Jul 2002
Posts: 14,285
Likes: 12
From: Bend,OR
all it takes is one tone ring tooth to be off . you should inspect the rear gears/tone ring yourself. have someone turn the wheel while you watch the tone ring. any bent tooth or missing tooth and there is your problem. or like said the mlp solenoid is bad. have you pulled any tranny codes?
Trending Topics
New User
Joined: May 2005
Posts: 4
Likes: 0
Not yet, but I will. Thanks for the answer. I'll check that tone ring out for any visible problems.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Top 10 Ford Trucks Coming to Mecum Indy 2026
Brett Foote
5 Best / 5 Worst Ford Truck Wheels of All Time
Joe Kucinski
Thread
Thread Starter
Forum
Replies
Last Post
Jude Hosey
1999 - 2016 Super Duty
5
Feb 2, 2017 08:12 AM
idihillbilly
Pre-Power Stroke Diesel (7.3L IDI & 6.9L)
3
Jul 4, 2015 06:00 PM
fontime
1987 - 1996 F150 & Larger F-Series Trucks
30
Nov 7, 2012 12:53 PM
CapeCodder96F250460
Big Block V8 - 385 Series (6.1/370, 7.0/429, 7.5/460)
3
Jul 17, 2009 08:39 PM
math427
1999 - 2016 Super Duty
2
Nov 10, 2008 07:38 AM