truck is skipping...not at idle but when driving.....sometimes at idle it will bog down but then catch up again... i did a search and can't figure out what a cop is??

 

Coil On Plug or Coil Over Plug?

 

coil on plug. instead of having a couple coil packs with spark plug wires or a distrubutor and plug wires, there is a coilpack mounted right on each spark plug.

 

yer kiddin me right?? coil on plug?? ddaayyuumm--i aways thought it was dem boyz in blue always chasin after me!!!

 

oh ok what a dumb azzz i am!
yea i dont think its a coil....
dealer said look for a vacuum leak, so we are doing that now! I wish all it was was a coil! usually thats what is wrong but it is just acting different this time.

 

you SHOULD throw a code if it's misfiring due to coil problems. have you read to see if anything is "Pending"????

 

no codes..... the pcv valve hose is sucking tight. We just put a new pcv valve in and still sucking the hose

 

--no i didnt mean nuthin by that--i was bein a smart-azz--ya know cops--etc.--sounds to me like sumpthin is clogged to cause the pcv line to collapse!

 

You will not get a CEL or any Code for a misfiring coil unless there is a complete failure of the coil. SD's are over 8500 GVWR and or not required to follow ODB II complience. See the link below.

https://www.ford-trucks.com/forums/5...t-come-on.html

If there is a misfire in a coil it will be stored as a Pending Code if there has been enough misfires. Most scanners can read the Pending Codes but it's a seperate menu from normal Codes.

 

Thanks for that info. I didn't know any of that, thanks for the link.

 

COPs are those pesky little things with lights on the cars that never seem to leave me alone! lol
Seriously, the guys are right, it is Coil On Plug. It replaced the twin coil packs found on earlier model modular engines. Ford swapped out the packs to the COPs in 1999 on the Mustang, not 100% on the trucks. By the way, if the pack is going out, you might want to take a look at the boot. They are prone to failure causing the pack not to work properly. What may cost you $45 may actually be a replaceable $10 boot.

 

No problem. When I first got this truck it took be a bit to wrap my head around the idea it was basically and ODB-I system with an OBD-II interface.

 

yeah, I'm looking hard at a 1999 F350. this will be a hard one for me to get used to if i get that truck....

 

Replace the pcv hose if it is sucking tight... They get soft with age, a good pcv hose is pretty firm and shouldn't suck closed.

 

Speaking of cop, the same one keeps cracking in my truck, 2001 350 v10, cylinder #10. Sometimes it will last a few months down to a day or 2, Am I putting it in wrong or doI have problems?
Thanks