TonyF150

Driving home last night and I was getting into a passing lane, to get the truck moving I hit the gas and it down shifted. I heard a small pop/clunk from what sounded like the driver side and the truck started to shake pretty bad. Like I had blown a tire. But I noticed that the engine was missing pretty bad and the check engine light was flashing. So I slowed down and went up the hill under normal throttle. In about .25 mile the engine light stopped and the engine ran fine. The whole way home it ram smooth and normal.

WHAT THE HECK WAS THAT?? LOL.. help....

transmaster

Best thing to do is to get your codes read to see what my have happened. One of the best thing you can spend money on is a OBDII code reader.

TonyF150

Don't have that option. Unless i take it to a shop and pay.

ANT2010KR

Seeing where you are from I would venture to say you ran over a Groundhog...it's gonna be a long cold winter now!

Just kiddin, what engine and what year truck are you talking about? Someone is bound to have seen this issue.

thorlake

I had the same thing happen to me on my 05 Ford....you have a bad ignition coil.....get a scanner.it will tell you which cylinder the coil is b.o.the coil is worth about 100bucks.

thorlake

You have got a bad ignition coil.....borrow or buy a code reader it will tell you wich one is b.o....cost for the coil about 100 bucks....easy change out ....

TonyF150

Runs great now.. Will it get worse er something?

jquez

Exact problem with my o7 f-150. now im on my second new coil. 1st was #3, then #8 cyl. a code reader is a must.

diggler

I've put one in my 02 also. Seems to be very common. Don't be surprised to replace it again and again. Knock on wood I've only done it once.

mlts22

Had that happen on my '98. Started running rough (thought it was mis-balanced tires at first, then saw a flashing CEL, although it didn't throw a code) Result: new spark plugs and COPs fixed it. I'd replace all eight just to know you won't have another one spring out at you.