This is topic 86 Engine Vibrations help in forum Tech Talk at Northern California Ford Owners  .


To visit this topic, use this URL:
https://californiafords.com/cgi-bin/ultimatebb.cgi?ubb=get_topic;f=6;t=003890

---

Posted by 1FastLX (Member # 1178) on :
 
My 86 5.0

has this Vibration Between 1000-1600 Rpm,

it idles fine but once i step on the gas it vibrates till after 1700 RPm and then it runs fine.

i also hear a knocking sound when that it vibrating.

can you guys help me Out.

i changed the Plug wires , and still the same

i haven't pulled the plugs

thanks
 

---

Posted by rokcrln (Member # 2536) on :
 
To check for a dead hole start the car and use a pair of rubber handled pliars and pull off one wire at a time from your cap/head coil and see if you notice a change. If you do then their is your dead hole if not look some were else. Hope this helps some.
 

---

Posted by HungryHippo (Member # 537) on :
 
sounds like the harmonic balancer. see if it looks ok, if not, you shouldnt drive it or you can do serious damage
 

---

Posted by 1FastLX (Member # 1178) on :
 

quote:

---

Originally posted by HungryHippo:
sounds like the harmonic balancer. see if it looks ok, if not, you shouldnt drive it or you can do serious damage

---

What can cause the Balancer to be unbalanced??

can timing be off also??

thanks
 

---

Posted by st5150 (Member # 51) on :
 
The two main parts of the balancer are held together by rubber. Rubber dries up and breaks over time causing the balancer to slip or be out of balance. Your problem can be many things though .... and weird vibrations and noises are very hard to trouble shoot over the internet
 

---

Posted by HungryHippo (Member # 537) on :
 
balancers just get old. most go out at about 100k. your timing can possibly be off if you have adjusted it while the balancer is spun. just take a look at it and see if the rubber ring is in one piece and see if it moves by hand. i reason i think its your balancer is because it sounds rpm related
 

---

Posted by 1FastLX (Member # 1178) on :
 
the balancer doesn't have any play.

but it looks like its missing some rubber

heres a couple of pics


thanks

[ April 28, 2003, 10:23 AM: Message edited by: 1FastLX ]
 

---

Posted by st5150 (Member # 51) on :
 
The pictures didn't show.
 

---

Posted by 1FastLX (Member # 1178) on :
 
sorry here are the links

side with out rubber

with rubber

thanks
 

---