84 Ford F150 4.9L I6 Ignition problem - Ford F150 Forum - Community of Ford Truck Fans

Go Back   Ford F150 Forum - Community of Ford Truck Fans > Pre-1997 F150 > Pre- 1987 / Classic Corner
Log In 


84 Ford F150 4.9L I6 Ignition problem

Reply
 
 
 
 
Thread Tools Search this Thread
Old 03-31-2011, 01:14 AM   #1
Junior Member
 
Join Date: Mar 2011
Posts: 1
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Question 84 Ford F150 4.9L I6 Ignition problem

I just bought a 84 F150 4.9L MT 4x4 that has a problem that baffles me and my mechanic friends. With the key on and the engine off the coil fires the cylinder that the distributor rotor is pointed at over and over again non stop till the key is turned off. When you crank the engine all spark stops. I have replaced the ICM, coil, and starter relay. I have ran the test to the ICM and all voltages are with in specs. This all started after the battery terminals were cleaned. Ran fine into garage, removed battery cables neg first cleaned terminals, put cables back on neg last went to start the truck and this problem started. So the last time it ran was when I pulled it into the garage. It has to be something simple I did no major repair to it. I even checked to see if the pin on the distributor gear sheered but its tight as can be and the rotor turns while cranking. Please some one has ran across this before. I have never came across a pointless distributor firing when the key was just on and not running.
MontanaF150 is offline   Reply With Quote
Join F150 Forum

Join F150Forum.com Today - It's Totally Free!

Are you a Ford F150 fan? If so we invite you to join our community and see what it has to offer. Our site is specifically designed for you and it's a great place for Ford F150 Fans to meet online.
Once you join you'll be able to post messages, upload pictures of your truck, and have a great time with other Ford F150 fans. Whether your an old timer or just bought your F150 you'll find that F150Forum.com is a great community to join. Best of all it's totally free!

Join F150Forum.com Today! - Click Here JOIN FOR FREE


-->
Old 03-31-2011, 12:01 PM   #2
52f1
 
52f1's Avatar
 
Join Date: Mar 2011
Location: paulden ,AZ
Posts: 20
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Default

that sounds like wiring Bro!!! Start from the distributor to the fusebox look for open wires on metal or open wires..
52f1 is offline   Reply With Quote
Old 03-31-2011, 12:03 PM   #3
52f1
 
52f1's Avatar
 
Join Date: Mar 2011
Location: paulden ,AZ
Posts: 20
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Default

or look at the Gounds clean them to and look for one that came apart..
52f1 is offline   Reply With Quote
 
 
 
Reply


Tags
distributor, ignition, misfire, spark

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


All times are GMT -4. The time now is 12:21 PM.


Copyright 2006 - 20011 F150forum.com
This site is in no way affiliated with the Ford Motor Company.