2000 Ford F-150 My tuck is running poorly

Tiny
TUBASOUSA
  • MEMBER
  • 2000 FORD F-150
  • V8
  • 2WD
  • AUTOMATIC
  • 106,532 MILES
Hello, first of all, I would like to thank you for talking the time to read my message. Okay, I got my 2000 Ford F-150 as an 18th birthday present from my dad. I have had it for about 3 months now. About two weeks ago, I was coming down my street and my engine stalled suddenly. Thinking nothing of it, I started it back up and drove home. The next day a misfire appeared but the MIL didn't come on. I took it that same day to the shop at my school and replaced all eight spark plugs and wiped the coils with a rag. This worked for about 3 days. Then I got a misfire in cylinder 8. I continued to drive it for a couple days. Im not going to drive it anymore until fixed because I now have a mis on cylinders 8, 5, and 3. And a blinking MIL. My funds are limited so I cannot afford to replace parts that work fine. So please, can you give me some advice here. I have no idea what the problem could be. Nobody knows. Im begging you, help me out here. Thank you.
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Saturday, December 29th, 2007 AT 12:05 AM

5 Replies

Tiny
BLACKOP555
  • EXPERT
Well take it to a auto zone and they shoudl scan it for trouble codes for free.

Post back the codes you have here. And we will continue.
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Saturday, December 29th, 2007 AT 11:10 AM
Tiny
FLEXY5
  • MEMBER
Just as a general question, have you run it through a good size puddle of water? The engine has coil-on-plug design (as you are aware). They have a reputation for going bad. If you know for certain which cylinders are missing, you could try switching the coils to cylinders that are not missing. If the miss follows the coils, replace the coils. It is also not uncommon for multiple coils to go bad at the same time, especially if they have had water on them or been cleaned with engine cleaner containing silicone. I have had to replace as many as six because the engine went through a detail shop that used silicone-based cleaners for the engine (a real bad idea for C.O.P. Design engines). Hope this helps.

Dave
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Saturday, December 29th, 2007 AT 11:39 AM
Tiny
TUBASOUSA
  • MEMBER
My codes are: p0305, p0308, and p0303
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Monday, December 31st, 2007 AT 12:18 AM
Tiny
TUBASOUSA
  • MEMBER
Thanks for your help Dave. I have driven it all day in snowy weather and stuff like that. I have done a spark test on the cylinders that are missing and the coils all stop working when they get warm (i used a hair dryer to test them for heat)
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Monday, December 31st, 2007 AT 12:21 AM
Tiny
TUBASOUSA
  • MEMBER
I have thought about getting some dielectric grease and spreading it all over the boots and inside each boot to prevent moisture getting to the plug terminals. I inspected plug 8 and it had a huge carbon track running down the side of it.
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Monday, December 31st, 2007 AT 12:28 AM

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