alsatropine

iTrader: (2)

Ok guys, ever since I had my tranny rebuilt it feels like I am getting a random misfire. It never did it with the overdrive off.. when I am going up a hill and barely pressing the gas, my truck with start bucking. It stops as soon as I give it more gas and it downshifts. Today I was going on a flat surface, stopping for a slow car, and tried to feather the pedal to slowly build up speed. It started bucking when I barely pressed the gas and as soon as I gave it a little more gas it stopped. It has been doing this for five months now. I changed spark plugs about 15000 miles ago and have installed 3 COPs with BWD brand from Oreilys. I figured by now that I would get a CEL but it has yet to happen. I really don't think it's transmission related , I think it's more engine related. It usually happens around 1500 RPMs. It won't do this every time so it just happens randomly. Anyone else have this problem or a solution?

jamie930

did you change the COP boots and spring when the plugs were done?
Had misfire changed plugs then about 15k mile later misfire again. Changed the boots and springs and it went away

alsatropine

iTrader: (2)

Not all the boots and springs just replaced the cops that I was getting a misfire code on. I'll try to change the boots and springs tomorrow. That makes sense. Any other contacts I can clean? Also can I buy them as a package deal or do I have to buy individually?

lewissa81

Clean the cop contacts when you replace the boots. I use a paper finger nail file cut to size. Also, use dialectic grease on both ends of the spring.

jamie930

Rock Auto has all 8 for less than $30 shipped to you. If you order just the boots they will ship via US mail

STANDARD MOTOR PRODUCTS Part # CPBK240 is what I used for my 06 5.4

alsatropine

iTrader: (2)

Sweet. Thanks for the info. I'll definately do that