badkarate
New Member
- Joined
- May 9, 2011
- Messages
- 4
- Reaction score
- 0
- Year, Model & Trim Level
- 03 Sport Trac
I own a 2003 Sport Trac 4wd with the 4.0L non flexfuel. On the drive home from work yesterday the check engine light came on, and the vehicle was running rough. I took it to autozone, had codes pulled, and it said the crank position sensor was bad, and there was a misfire on cylinder 3. I replaced the CPS, and that got rid of the check engine light. The truck is still running rough at idle though. Since both issues showed up at the same time, I assumed that the misfire was caused by the bad CPS. The only thing I cant think of is that there is a relearn period for the sensor that hasn't been completed, since I have only driven about 7 miles since replacing it. Any suggestions?