Notices
1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

Should I just replace my computer?

Thread Tools
 
Search this Thread
 
Old Jul 22, 2017 | 09:38 AM
  #1  
Rich G's Avatar
Rich G
Thread Starter
|
Junior User
Joined: Apr 2017
Posts: 78
Likes: 0
Should I just replace my computer?

My truck is a 93 F350 460/auto 2wd

It had a really bad intermittent running problem where it runs like dog crap, check engine light flashes on and off, it will barely shift and barely idle. When it's doing this I try to pull codes and nothing comes up, the scanner just reads 000 and won't start the test.

When it runs good, everything is fine and it runs all the tests with no codes.
I am lost at this point.. should I just try a computer?

Thanks
 
Reply
Old Jul 22, 2017 | 10:19 AM
  #2  
mrollings53's Avatar
mrollings53
Laughing Gas
10 Year Member
Photogenic
Photoriffic
Shutterbug
Joined: Oct 2014
Posts: 1,227
Likes: 4
From: Washington
I'd pull out the PCM, remove the cover, and inspect the capacitors for bulging, leaking, and corrosion. They are a common failure point for our PCM's.

You can replace them yourself if you are handy with a soldering iron, and the traces aren't destroyed by corrosion.
 
Reply
Old Jul 22, 2017 | 10:37 AM
  #3  
Tedster9's Avatar
Tedster9
Post Fiend
Joined: Apr 2002
Posts: 19,311
Likes: 97
From: Waterloo, Iowa
Just replace them, they are 25 years old. They don't usually or always bulge or leak.
 
Reply
Old Jul 22, 2017 | 05:36 PM
  #4  
Rich G's Avatar
Rich G
Thread Starter
|
Junior User
Joined: Apr 2017
Posts: 78
Likes: 0
Originally Posted by Tedster9
Just replace them, they are 25 years old. They don't usually or always bulge or leak.
The caps or the ecm itself?
 
Reply
Old Jul 25, 2017 | 07:10 PM
  #5  
Tedster9's Avatar
Tedster9
Post Fiend
Joined: Apr 2002
Posts: 19,311
Likes: 97
From: Waterloo, Iowa
Originally Posted by Rich G
The caps or the ecm itself?
Just the capacitors, that's usually the only parts that fail, though maybe they can zap something else when they choke, or the electrolyte will corrode the etched circuit board. Some of those boards get kinda spendy. Capacitors are inexpensive.
 
Reply
Old Jul 27, 2017 | 02:46 PM
  #6  
vjsimone's Avatar
vjsimone
Cargo Master
10 Year Member
Photogenic
Photoriffic
Liked
Joined: Jun 2013
Posts: 3,182
Likes: 15
From: Somewhere n North America
Check the single wire, (STI) Self Test wire for 5vdc.
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Davis2
1987 - 1996 F150 & Larger F-Series Trucks
22
Feb 12, 2021 09:40 PM
Rich G
1987 - 1996 F150 & Larger F-Series Trucks
23
Oct 30, 2017 05:44 AM
sgauvry
1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks
13
Jun 16, 2015 04:27 AM
fmrplt
1983 - 2012 Ranger & B-Series
4
Mar 2, 2008 09:48 AM
bluewood
1987 - 1996 F150 & Larger F-Series Trucks
9
Sep 14, 2004 01:49 PM




All times are GMT -5. The time now is 03:37 PM.

story-0
This Hennessey Takes the Expedition Tremor's Off-Roading Capability to the Next Level

Slideshow: The VelociRaptor Expedition gains a lift, upgraded suspension, Brembo brakes, and trail-ready equipment while retaining the stock 440-horsepower EcoBoost V6.

By Verdad Gallardo | 2026-06-12 11:01:55


VIEW MORE
story-1
Top 10 Fords at 2026 Carlisle Ford Nationals

Slideshow: Top 10 Fords at 2026 Ford Nationals

By Joe Kucinski | 2026-06-09 11:10:08


VIEW MORE
story-2
3 Best / 3 Worst Parts of Modern Ford Ownership

Based on years of owning multiple modern Ford products.

By Brett Foote | 2026-06-09 10:53:36


VIEW MORE
story-3
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches

SPONSORED: From muddy boots to rain-soaked cargo, these upgrades address some of the most common frustrations Ford truck owners face every day.

By Pouria Savadkouei | 2026-06-08 18:50:34


VIEW MORE
story-4
Every 2026 Ford Engine Explained

Here's everything you need to know about every Ford engine available for the 2026 model year.

By Brett Foote | 2026-06-05 12:58:01


VIEW MORE
story-5
10 Ugly Ford Trucks That We Still Kinda Love

Slideshow: 10 ugly Ford trucks that we still kinda love.

By Joe Kucinski | 2026-06-03 09:51:16


VIEW MORE
story-6
10 Things Every Truck Owner NEEDS (2026 Edition)

Slideshow: the best gifts for dads & grads

By Michael S. Palmer | 2026-06-03 15:43:58


VIEW MORE
story-7
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath

Slideshow: Called the Fortress, the 850-horsepower pickup combines Raptor underpinnings with military-inspired features, survival equipment, and a starting price of $285,000.

By Verdad Gallardo | 2026-06-03 11:38:36


VIEW MORE
story-8
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer

Slideshow: 10 most expensive Ford trucks ever sold on Bring a Trailer.

By Joe Kucinski | 2026-05-27 16:24:34


VIEW MORE
story-9
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)

Here's everything that has changed for the latest model year.

By Brett Foote | 2026-05-27 16:17:28


VIEW MORE