02 ABS light and bouncing speedometer.
Logistics Pro
Joined: Jan 2014
Posts: 3,595
Likes: 17
Well....
Swapped the VSS for a new one from Ford. In the process broke the clips off the original connector so I picked one up from O'Reilly's and splice it in properly. Changed the gear oil in the rear diff, THAT was way overdue good God. Buttoned it all back up, filled up the diff, took it for a test drive this morning aaaaand - nothing.
ABS light, OD flashing, no speedo, and no cruise. Tried running the harness up to the firewall as suggested earlier and I couldn't find any issues - even the convoluted tubing is still in good shape.
Only other thing I can think of right now is I may have spliced in the new connector backwards, but would that even matter? The new connector wires are both white, no identifying marks, so I hooked the left side up to red and the right side to green (OEM orientation in the original Ford connector).
Swapped the VSS for a new one from Ford. In the process broke the clips off the original connector so I picked one up from O'Reilly's and splice it in properly. Changed the gear oil in the rear diff, THAT was way overdue good God. Buttoned it all back up, filled up the diff, took it for a test drive this morning aaaaand - nothing.
ABS light, OD flashing, no speedo, and no cruise. Tried running the harness up to the firewall as suggested earlier and I couldn't find any issues - even the convoluted tubing is still in good shape.
Only other thing I can think of right now is I may have spliced in the new connector backwards, but would that even matter? The new connector wires are both white, no identifying marks, so I hooked the left side up to red and the right side to green (OEM orientation in the original Ford connector).
Logistics Pro
Joined: Jan 2014
Posts: 3,595
Likes: 17
VSS is brand new Ford-sourced. This only started happening after the flood waters. First the ABS went south, then the speedo started acting up two days later before finally quitting altogether. Wiring looks to be intact, haven't had time to probe terminals and wires fully yet.
Thread Starter
|
i ain't rite
Joined: Mar 2005
Posts: 65,450
Likes: 5,520
From: Marlboro Mental Hospital.
mine went out again with the rain every day for the past 2 weeks, then yesterday it started working again after 2 days dry.
this morning it is raining, and it stopped working on the way to the store.
this morning it is raining, and it stopped working on the way to the store.
Logistics Pro
Joined: Jan 2014
Posts: 3,595
Likes: 17
I finally fixed mine, had a separate thread in the Excursion forum.
Mine ended up being the ABS module itself. It receives and interprets the VSS signal before sending it to the speedo/odo. Based on where mine was (under the driver battery), I guess it got flooded out and shorted internally.
Mine ended up being the ABS module itself. It receives and interprets the VSS signal before sending it to the speedo/odo. Based on where mine was (under the driver battery), I guess it got flooded out and shorted internally.
Logistics Pro
Joined: Jan 2014
Posts: 3,595
Likes: 17
Just the electronic module on the ABS pump.
https://www.ford-trucks.com/forums/1...l#post15444533 <-- should be the follow up post on my fix from the Excursion thread.
https://www.ford-trucks.com/forums/1...l#post15444533 <-- should be the follow up post on my fix from the Excursion thread.
Cargo Master
Joined: Jan 2005
Posts: 2,902
Likes: 2
From: Pasadena, Maryland
Welcome to my hell.....I had your symptoms and a bouncing tach as well...
Home Depot has nice tarps to cover the cab for when it rains.
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
Senior User
Joined: Dec 2010
Posts: 198
Likes: 0
i think i found it.
stopped at the body shop this morning. of course this morning the light was out, speedometer worked and OD light was out.
the mechanic suggested bleeding the brakes again, saying there may still be an air bubble in the ABS unit from when i blew the brake lines last fall. put the pressure pot on, and sure enough, got 3 bubbles out of the lines.
brake pedal is a lot firmer now too.
not sure why that would effect the speedometer though.
stopped at the body shop this morning. of course this morning the light was out, speedometer worked and OD light was out.
the mechanic suggested bleeding the brakes again, saying there may still be an air bubble in the ABS unit from when i blew the brake lines last fall. put the pressure pot on, and sure enough, got 3 bubbles out of the lines.
brake pedal is a lot firmer now too.
not sure why that would effect the speedometer though.
Thread Starter
|
i ain't rite
Joined: Mar 2005
Posts: 65,450
Likes: 5,520
From: Marlboro Mental Hospital.
yea, it drove ne nuts for a while. i only found it when i realized the driver side headlight was not working.
when i pulled it apart there was a burn mark on the ABS module from the wire arcing against it.
and that also explained the intermittent work/ no work.
after i fixed it i realized it would only screw up when the headlights were on.
when i pulled it apart there was a burn mark on the ABS module from the wire arcing against it.
and that also explained the intermittent work/ no work.
after i fixed it i realized it would only screw up when the headlights were on.
Thread
Thread Starter
Forum
Replies
Last Post