# 2006 Hyundai Tucson - Won't start. But it's OK when it is running **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** hyundai\ **Created:** [February 9, 2023, 3:42pm UTC](https://community.cartalk.com/t/2006-hyundai-tucson-wont-start-but-its-ok-when-it-is-running/189053 "2023-02-09T15:42:18Z")\ **Posts on this page:** 12\ **Page:** 1
**Author:** ![Bob16](https://avatars.discourse-cdn.com/v4/letter/b/ce7236/32.png) [@Bob16](https://community.cartalk.com/u/Bob16)\ **Post date:** [February 9, 2023, 3:42pm UTC](https://community.cartalk.com/t/2006-hyundai-tucson-wont-start-but-its-ok-when-it-is-running/189053/1 "2023-02-09T15:42:18Z")
Won’t start batt ok just stop while driving ---
**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:** [February 9, 2023, 10:38pm UTC](https://community.cartalk.com/t/2006-hyundai-tucson-wont-start-but-its-ok-when-it-is-running/189053/2 "2023-02-09T22:38:24Z")
Need a little more info. Engine/transmission configuration? (Engine ID on label underside of hood.) Does it make the normal rrr rrr rrrr sound with key in “start”? Maybe only a “click”? Or no sound at all w/key in “start”? Is check engine light on? ---
**Author:** ![VDCdriver](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/vdcdriver/32/30_2.png) [@VDCdriver](https://community.cartalk.com/u/VDCdriver)\ **Post date:** [February 11, 2023, 12:53am UTC](https://community.cartalk.com/t/2006-hyundai-tucson-wont-start-but-its-ok-when-it-is-running/189053/3 "2023-02-11T00:53:47Z")
I find this a bit confusing. If it “won’t start”, how can it be okay when it’s **running**? We need a much better explanation of the symptoms. ---
**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:** [February 11, 2023, 1:16am UTC](https://community.cartalk.com/t/2006-hyundai-tucson-wont-start-but-its-ok-when-it-is-running/189053/4 "2023-02-11T01:16:21Z")
If you mean that the engine ran fine, and then suddenly shut off and won’t restart, that can be caused by a bad crankshaft position sensor, > **[Bad Crankshaft Position Sensor Symptoms & Problems](https://www.1aauto.com/content/articles/bad-or-failing-crankshaft-position-sensor-symptoms)** > > Problems with the crankshaft sensor will often present as problems with engine timing. If you think your sensor has failed, here are some common symptoms of a bad crankshaft sensor that can help you in determining whether or not it has failed. Tester ---
**Author:** ![PvtPublic](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/pvtpublic/32/13089_2.png) [@PvtPublic](https://community.cartalk.com/u/PvtPublic)\ **Post date:** [February 11, 2023, 1:18am UTC](https://community.cartalk.com/t/2006-hyundai-tucson-wont-start-but-its-ok-when-it-is-running/189053/5 "2023-02-11T01:18:01Z")
> [@George\_San\_Jose1](#): > > Need a little more info. Engine/transmission configuration? We need a lot more than that. Like already mentioned.how can it run ok. when it doesn’t start. I am not going to play 20 questions. If the OP can’t describe what the problem is, I will not even opine an answer. Is opine the right word? It doesn’t really matter what the engine is. Not starting comes down to no spark, no fuel, no air, no compression or no electric power. It’s all the same whether its an inline, a ‘v’, an opposed cylinder, a radial, manual, automatic, or CVT’s. ---
**Author:** ![weekend-warrior](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/weekend-warrior/32/26122_2.png) [@weekend-warrior](https://community.cartalk.com/u/weekend-warrior)\ **Post date:** [February 11, 2023, 1:22am UTC](https://community.cartalk.com/t/2006-hyundai-tucson-wont-start-but-its-ok-when-it-is-running/189053/6 "2023-02-11T01:22:30Z")
o·pine [ōˈpīn] VERB FORMAL 1. hold and state as one’s opinion ---
**Author:** ![VOLVO-V70](https://avatars.discourse-cdn.com/v4/letter/v/8e8cbc/32.png) [@VOLVO-V70](https://community.cartalk.com/u/VOLVO-V70)\ **Post date:** [February 11, 2023, 1:23am UTC](https://community.cartalk.com/t/2006-hyundai-tucson-wont-start-but-its-ok-when-it-is-running/189053/7 "2023-02-11T01:23:27Z")
I think 75 % of the posts from the ( Ask Someone site ) just should be sent back into Cyberspace . ---
**Author:** ![PvtPublic](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/pvtpublic/32/13089_2.png) [@PvtPublic](https://community.cartalk.com/u/PvtPublic)\ **Post date:** [February 11, 2023, 1:29am UTC](https://community.cartalk.com/t/2006-hyundai-tucson-wont-start-but-its-ok-when-it-is-running/189053/8 "2023-02-11T01:29:11Z")
I think you are low on the percentage. ---
**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:** [February 11, 2023, 1:31am UTC](https://community.cartalk.com/t/2006-hyundai-tucson-wont-start-but-its-ok-when-it-is-running/189053/9 "2023-02-11T01:31:46Z")
“OK when running” was the moderator’s input, the OP only stated that the engine stopped while driving. ---
**Author:** ![weekend-warrior](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/weekend-warrior/32/26122_2.png) [@weekend-warrior](https://community.cartalk.com/u/weekend-warrior)\ **Post date:** [February 11, 2023, 1:42am UTC](https://community.cartalk.com/t/2006-hyundai-tucson-wont-start-but-its-ok-when-it-is-running/189053/10 "2023-02-11T01:42:34Z")
Just a guess… If the engine was running fine and just died. and now will not start but the battery checks out ok. then either an electrical problem like a loose or defective battery cable, or a seized engine. ---
**Author:** ![PvtPublic](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/pvtpublic/32/13089_2.png) [@PvtPublic](https://community.cartalk.com/u/PvtPublic)\ **Post date:** [February 11, 2023, 10:52am UTC](https://community.cartalk.com/t/2006-hyundai-tucson-wont-start-but-its-ok-when-it-is-running/189053/11 "2023-02-11T10:52:58Z")
Fuel pump/relay/fuse, crankshaft position sensor, camshaft position sensor (if applicable), ignition relay/fuses, ignition switch (electrical component), no fuel, as mentioned wiring problems, bad ECU. Or just that it’s a 17year old Hyundai. I’ve probably missed some things, but there’s a list to start checking. ---
**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:** [February 11, 2023, 11:03pm UTC](https://community.cartalk.com/t/2006-hyundai-tucson-wont-start-but-its-ok-when-it-is-running/189053/12 "2023-02-11T23:03:06Z")
> [@PvtPublic](#): > > We need a lot more than that. … . I am not going to play 20 questions I expect OP posted from cell-phone. Typing engine behavior details on a cell-phone is pretty awkward, especially for someone like geezer-me; difficulty in reading small print, and fingers too big to reliably punch cell phone keys. In any event, concur w/you, no point in speculating unless/until OP comes back and adds clarity.