Notices
1973 - 1979 F-100 & Larger F-Series Trucks Discuss the Dentsides Ford Truck
Sponsored by:
Sponsored by: Moser

Runs rough sometimes.

Thread Tools
 
Search this Thread
 
Old May 2, 2010 | 07:37 AM
  #1  
roosterst's Avatar
roosterst
Thread Starter
|
New User
Joined: Mar 2009
Posts: 15
Likes: 0
Runs rough sometimes.

I have a '79 F100 302 2bbl. One day, out of the blue, it wouldn't idle. Almost seemed like plug wires were crossed. The whole truck shakes violently, and the tach jumps from 1000rpms to 100rpms. But, then the next time I start it, it idles, and drives fine. Sometimes it's fine, and other times its bad.

Any ideas?
 
Reply
Old May 2, 2010 | 08:36 AM
  #2  
bkohne1's Avatar
bkohne1
Senior User
Joined: Sep 2006
Posts: 285
Likes: 0
Mine was doing stuff similar to that and i changed the ignition control module. Ever since i replaced that the truck runs great. They are only about $20.00 also, so its a cheap fix.
 
Reply
Old May 2, 2010 | 10:16 AM
  #3  
fmc400's Avatar
fmc400
MSEE
Joined: Apr 2004
Posts: 10,386
Likes: 35
From: Austin, TX
Club FTE Gold Member
Are you saying that every time this happens, you're able to shut the truck off, and immediately restart it with the problem gone (until it returns again)?
 
Reply
Old May 2, 2010 | 01:15 PM
  #4  
roosterst's Avatar
roosterst
Thread Starter
|
New User
Joined: Mar 2009
Posts: 15
Likes: 0
No, it does it randomly.

Two weeks ago, it did it everytime. Last week it ran perfect. Yesterday, it acted up. I shut it off, and tried again. It was fine that second time. I drove two blocks to the gas station. When I started it to go home, it acted up. After about a minute of running rough, it fixed itself, and ran fine the rest of the night. Today, it was completely fine.

 
Reply
Old May 4, 2010 | 05:40 PM
  #5  
roosterst's Avatar
roosterst
Thread Starter
|
New User
Joined: Mar 2009
Posts: 15
Likes: 0
I'll try the ignition module next time it does it.

Thanks
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Damien05
1997 - 2003 F150
9
May 2, 2012 09:10 PM
forddude2134
1987 - 1996 F150 & Larger F-Series Trucks
1
Dec 2, 2009 07:45 PM
fordzrule
1987 - 1996 F150 & Larger F-Series Trucks
9
Oct 16, 2003 07:56 AM




All times are GMT -5. The time now is 02:10 AM.

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