1995 Bronco no speedometer or odometer.
Thread Starter
|
New User
Joined: Jan 2015
Posts: 8
Likes: 0
1995 Bronco no speedometer or odometer.
Hey there. I dont mean to bring back a old thread, but thi sis the exact same problem I am having on my 95 Big Bronco. Its been in storage for a year waiting on me to rebuild motor. So I just rebuilt it and got it working great. Now the engine runs great and the transmission shifts rough. The speedo and odometer dont work. I have no check engine light, no ABS light, everything works on the truck. ALL fuses are good, none ever blew. The only light is the O/D light on the shifter blinks. So after lots of reading, I think its the PSOM. Please let me know what you think. Thanks
Thread Starter
|
New User
Joined: Jan 2015
Posts: 8
Likes: 0
Hey there. I dont mean to bring back a old thread, but thi sis the exact same problem I am having on my 95 Big Bronco. Its been in storage for a year waiting on me to rebuild motor. So I just rebuilt it and got it working great. Now the engine runs great and the transmission shifts rough. The speedo and odometer dont work. I have no check engine light, no ABS light, everything works on the truck. ALL fuses are good, none ever blew. The only light is the O/D light on the shifter blinks. So after lots of reading, I think its the PSOM. Please let me know what you think. Thanks
Would the odometer still show something in the little digital readout? Or would it be completely blank like mine is? Mine lights up but had no numbers. And the rest button does nothing when I turn the key over while holding the reset.
Fleet Owner
Joined: Oct 2005
Posts: 20,786
Likes: 1,751
From: Kentucky
If is odometer is lighting up, but no display, I suspect a bad PSOM. They are known to have loose solder connections. Probably worth the time to pull it out for an inspection. A faulty VSS will not cause a blank odometer display.
Fleet Owner
Joined: Oct 2005
Posts: 20,786
Likes: 1,751
From: Kentucky
[img]
]/img]
Fleet Owner
Joined: Oct 2005
Posts: 20,786
Likes: 1,751
From: Kentucky
I overlooked you have a Bronco..they have 4 Wheel ABS....no RABS or test port. Sorry.
Thread Starter
|
New User
Joined: Jan 2015
Posts: 8
Likes: 0
Thanks for your help rla2005. I bypassed the WABS with jumper wires and it had no effect on the shifting/speedo/odometer. So I am really thinking the PSOM is no good. Weather should be better tomorrow so I plan on pulling it out and testing it. Hope I can find a issue that I can fix and get to driving my toy! Do you have any pics of weak points in the PSOM I need to check/repair? Thanks again.
Trending Topics
Fleet Owner
Joined: Oct 2005
Posts: 20,786
Likes: 1,751
From: Kentucky
All of the solder connections on the back side. Especially the lands with capacitors, they tend to crack more often that the ones with IC chips or resistors.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
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
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
Posting Guru
Joined: Sep 2008
Posts: 2,379
Likes: 2
For OP...I have had some of these components fall off my PSOM and need to be soldered back on. Check your PSOM but be careful when removing it. If any of those components fall off, you need to know where they go, and if it's a capacitor you need to know how it was orientated on the board...just be careful
Fleet Owner
Joined: Oct 2005
Posts: 20,786
Likes: 1,751
From: Kentucky
I took the OP for their statement earlier "No fuses blown" and they stated the display lit up but no digits. I will suggest as you to double check.
Cargo Master
Joined: Mar 2007
Posts: 2,935
Likes: 34
From: Arcadia, Fla
Press and hold the "reset" and "select" buttons on the PSOM while turning the key on. The PSOM will start it's test mode by swinging the needle full scale and back with odo all lite up.
I have seen the LCD odo display quit working but speedo still show MPH. But as you have hard shifting, I suspect the PSOM is bad or power going to PSOM(fuses #8 and #18) may be bad.
Both those fuses are in the dash fuse box.
One quick check is if the dome light is working then fuse #8 is good. Fuse #8 supplies power to PSOM memory and Dome light. This dome light fuse is notorious for failing when the dome light melts and shorts out or the wires along the driver side floor are messed up.
I have seen the LCD odo display quit working but speedo still show MPH. But as you have hard shifting, I suspect the PSOM is bad or power going to PSOM(fuses #8 and #18) may be bad.
Both those fuses are in the dash fuse box.
One quick check is if the dome light is working then fuse #8 is good. Fuse #8 supplies power to PSOM memory and Dome light. This dome light fuse is notorious for failing when the dome light melts and shorts out or the wires along the driver side floor are messed up.
Thread Starter
|
New User
Joined: Jan 2015
Posts: 8
Likes: 0
I have checked all wiring and fuses. None are blown and power is coming to the fuse block. I even tested the fuses under the hood. Thanks for all the info on the PSOM. I plan on taking it out of the truck tomorrow. I will post some pic's. When I push the RESET and turn key on, the speedo does nothing. Odometer just stays blank. I do not have a ABS light flashing either. I DO have the O/D on the shifter start flashing after the truck slam's into second gear. 
Fleet Owner
Joined: Oct 2005
Posts: 20,786
Likes: 1,751
From: Kentucky
I have checked all wiring and fuses. None are blown and power is coming to the fuse block. I even tested the fuses under the hood. Thanks for all the info on the PSOM. I plan on taking it out of the truck tomorrow. I will post some pic's. When I push the RESET and turn key on, the speedo does nothing. Odometer just stays blank. I do not have a ABS light flashing either. I DO have the O/D on the shifter start flashing after the truck slam's into second gear.
Thread Starter
|
New User
Joined: Jan 2015
Posts: 8
Likes: 0
I really appreciate all the help guys! Many thanks to everyone. I will post tomorrow after I pull the PSOM and inspect it. Until then, later..