# 2006 Jeep Commander - is it okay to run on 7 cyl? **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** commander, jeep\ **Created:** [July 6, 2019, 2:46pm UTC](https://community.cartalk.com/t/2006-jeep-commander-is-it-okay-to-run-on-7-cyl/143750 "2019-07-06T14:46:55Z")\ **Posts on this page:** 11\ **Page:** 1
**Author:** ![DavidYoung](https://avatars.discourse-cdn.com/v4/letter/d/ed8c4c/32.png) [@DavidYoung](https://community.cartalk.com/u/DavidYoung)\ **Post date:** [July 6, 2019, 2:46pm UTC](https://community.cartalk.com/t/2006-jeep-commander-is-it-okay-to-run-on-7-cyl/143750/1 "2019-07-06T14:46:56Z")
My Jeep has no compression on #8 cylinder. It runs very well until 65mph and then it struggles, but still manages to recover, except for steep hills when it chugs. Mechanic said he put a camera into cylinder and detected traces of metal shavings and told me to replace the engine. That was a year ago and I’m still driving short distances and cannot afford an engine as I am on SS and age 80. Do I have anything to worry about. Engine is clean as can be. ---
**Author:** ![Mustangman](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/mustangman/32/44130_2.png) [@Mustangman](https://community.cartalk.com/u/Mustangman)\ **Post date:** [July 6, 2019, 3:43pm UTC](https://community.cartalk.com/t/2006-jeep-commander-is-it-okay-to-run-on-7-cyl/143750/2 "2019-07-06T15:43:51Z")
As long as you don’t mind driving a 7 cylinder engine, go right ahead. I’d guess there is more wrong with this engine besides #8 since you should have more power than what you describe. At some point the #8 may decide to spontaneously destruct itself and lock the engine up solid. At that point you may just have it towed away rather than install a new engine. ---
**Author:** ![Yosemite](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/yosemite/32/643_2.png) [@Yosemite](https://community.cartalk.com/u/Yosemite)\ **Post date:** [July 8, 2019, 12:54am UTC](https://community.cartalk.com/t/2006-jeep-commander-is-it-okay-to-run-on-7-cyl/143750/3 "2019-07-08T00:54:51Z")
look at the up-side. You can tell everyone that you have a 7 cylinder and during winter #8 keeps running to keep the engine warm. No more cold car on those 15 degree days in January. Yosemite ---
**Author:** ![Tester](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/tester/32/15976_2.png) [@Tester](https://community.cartalk.com/u/Tester)\ **Post date:** [July 8, 2019, 12:56am UTC](https://community.cartalk.com/t/2006-jeep-commander-is-it-okay-to-run-on-7-cyl/143750/4 "2019-07-08T00:56:22Z")
Sure you can. If you don’t mind destroying the catalytic converter(s)? Tester ---
**Author:** ![NYBo](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/nybo/32/17281_2.png) [@NYBo](https://community.cartalk.com/u/NYBo)\ **Post date:** [July 8, 2019, 1:18am UTC](https://community.cartalk.com/t/2006-jeep-commander-is-it-okay-to-run-on-7-cyl/143750/5 "2019-07-08T01:18:13Z")
> [@Tester](#): > > Sure you can. > > If you don’t mind destroying the catalytic converter(s)? > > Tester Would it help to disconnect the fuel injector for that cylinder? ---
**Author:** ![Tester](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/tester/32/15976_2.png) [@Tester](https://community.cartalk.com/u/Tester)\ **Post date:** [July 8, 2019, 1:21am UTC](https://community.cartalk.com/t/2006-jeep-commander-is-it-okay-to-run-on-7-cyl/143750/6 "2019-07-08T01:21:57Z")
The OP didn’t state if that was done. So, one must assume that it wasn’t. Tester ---
**Author:** ![Nevada\_545](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/nevada_545/32/41232_2.png) [@Nevada\_545](https://community.cartalk.com/u/Nevada_545)\ **Post date:** [July 8, 2019, 1:34am UTC](https://community.cartalk.com/t/2006-jeep-commander-is-it-okay-to-run-on-7-cyl/143750/7 "2019-07-08T01:34:09Z")
> [@NYBo](#): > > Would it help to disconnect the fuel injector for that cylinder? It has been my experience that a Mopar Next Generation Controler will shut off the injector if a misfire is detected. ---
**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:** [July 8, 2019, 1:35am UTC](https://community.cartalk.com/t/2006-jeep-commander-is-it-okay-to-run-on-7-cyl/143750/8 "2019-07-08T01:35:36Z")
That makes it easy. I guess ideally you’d like to remove all the intake and exhaust valves for that cylinder. Since the engine seems to have been run this way for a considerable time, worrying about the cat seems pretty low on the list of priorities at this point. ---
**Author:** ![auto-owner](https://avatars.discourse-cdn.com/v4/letter/a/50afbb/32.png) [@auto-owner](https://community.cartalk.com/u/auto-owner)\ **Post date:** [July 8, 2019, 1:41am UTC](https://community.cartalk.com/t/2006-jeep-commander-is-it-okay-to-run-on-7-cyl/143750/9 "2019-07-08T01:41:43Z")
If I were going to drive a car with a dead cylinder, I’d probably remove the spark plug and disconnect fuel injector, unless as suggested above, that second step may be unnecessary. ---
**Author:** ![Nevada\_545](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/nevada_545/32/41232_2.png) [@Nevada\_545](https://community.cartalk.com/u/Nevada_545)\ **Post date:** [July 8, 2019, 1:44am UTC](https://community.cartalk.com/t/2006-jeep-commander-is-it-okay-to-run-on-7-cyl/143750/10 "2019-07-08T01:44:50Z")
> [@George\_San\_Jose1](#): > > I guess ideally you’d like to remove all the intake and exhaust valves for that cylinder. Doing so would provide a clear path for the intake manifold to draw air from the exhaust manifold. ---
**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:** [July 8, 2019, 1:46am UTC](https://community.cartalk.com/t/2006-jeep-commander-is-it-okay-to-run-on-7-cyl/143750/11 "2019-07-08T01:46:04Z")
lol … ok, I see why that’s no good. Except if you need a lot of egr 😉