# Cylinder misfire after replacing coil **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** endeavor, mitsubishi\ **Created:** [April 26, 2017, 2:18pm UTC](https://community.cartalk.com/t/cylinder-misfire-after-replacing-coil/103333 "2017-04-26T14:18:54Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![Kacieandmaggie](https://avatars.discourse-cdn.com/v4/letter/k/3d9bf3/32.png) [@Kacieandmaggie](https://community.cartalk.com/u/Kacieandmaggie)\ **Post date:** [April 26, 2017, 2:18pm UTC](https://community.cartalk.com/t/cylinder-misfire-after-replacing-coil/103333/1 "2017-04-26T14:18:54Z")
Yesterday my car began shaking and my check engine light came in. I had it read at autozone and it said cylinder 4 misfire. I checked the plugs and they looked good. I figured it was the ignition coil, so I switched the number 4 coil over to cylinder six and had the code read agin. This time it said cylinder 6 misfire, I figured I had found the problem and bought a new coil, installed it and the shaking is still there. I haven’t had a chance to take it back to get the code read. It just seems odd the the problem changed cylinders when I moved the coil over, but replacing the foil didn’t fix it. Any suggestions? ---
**Author:** ![insightful](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/insightful/32/2732_2.png) [@insightful](https://community.cartalk.com/u/insightful)\ **Post date:** [April 26, 2017, 6:00pm UTC](https://community.cartalk.com/t/cylinder-misfire-after-replacing-coil/103333/2 "2017-04-26T18:00:47Z")
> [@Kacieandmaggie](#): > > It just seems odd the the problem changed cylinders when I moved the coil over, but replacing the foil didn’t fix it. A bad new coil would explain it. ---
**Author:** ![George\_San\_Jose1](https://avatars.discourse-cdn.com/v4/letter/g/e5b9ba/32.png) [@George\_San\_Jose1](https://community.cartalk.com/u/George_San_Jose1)\ **Post date:** [April 27, 2017, 11:58pm UTC](https://community.cartalk.com/t/cylinder-misfire-after-replacing-coil/103333/3 "2017-04-27T23:58:46Z")
Good detective work there OP. Change that coil over to a different cylinder, see if the problem follows along w/ the coil again. If so, I think @insightful has it, you just got unlucky on the coil purchase. While you have the coils removed you could test the resistances I suppose. Usually the secondary measures around 10k ohm. There’s often a test for the power transistor too, you’d have to look it up how to do it in the service manual. Edit: There may be some anti-static procedure you should follow when replacing coils. Maybe somebody here knows. If the power transistor got a static shock in the process you could turn a good replacement coil to a bad coil rather quickly. ---
**Author:** ![kurtwm1](https://avatars.discourse-cdn.com/v4/letter/k/13edae/32.png) [@kurtwm1](https://community.cartalk.com/u/kurtwm1)\ **Post date:** [April 28, 2017, 12:18am UTC](https://community.cartalk.com/t/cylinder-misfire-after-replacing-coil/103333/4 "2017-04-28T00:18:46Z")
you switched coil 4 to 6 and the problem moved to 6. I hope you installed the new coil on 6, not on 4, unless you moved them back again 🙂 ---
**Author:** ![Cavell](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/cavell/32/43396_2.png) [@Cavell](https://community.cartalk.com/u/Cavell)\ **Post date:** [April 29, 2017, 1:03pm UTC](https://community.cartalk.com/t/cylinder-misfire-after-replacing-coil/103333/5 "2017-04-29T13:03:11Z")
Seems like a lot of driving with misfire. Is that bad?