# Lets Play Name This Sensor and Help with Rough Start/Idle!!!! Civic-D15B7 **URL:** \ **Category:** NYSpeed Automotive\ **Created:** [January 2, 2008, 6:01am UTC](https://forums.speedlife.net/t/lets-play-name-this-sensor-and-help-with-rough-start-idle-civic-d15b7/41080 "2008-01-02T06:01:55Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![SilverGT](https://avatars.discourse-cdn.com/v4/letter/s/8dc957/32.png) [@SilverGT](https://forums.speedlife.net/u/SilverGT)\ **Post date:** [January 2, 2008, 6:01am UTC](https://forums.speedlife.net/t/lets-play-name-this-sensor-and-help-with-rough-start-idle-civic-d15b7/41080/1 "2008-01-02T06:01:55Z")
i was gonna ask this before i go and ask on honda-tech. Well its located right under the distrubutor its out of a 1993 Honda Civic LX Sedan d15b7 5spd Let me know… I dont know if this is the cause of the car having a hard start or what…but who knows… If anyone could help me that would be great…here is what i have observe with the honda civic… if i leave the car over night it seems to have a very hard start… It cranks over and turns over but doesnt fire up. It does this for about a good 5 sec…Then it fires up once and dies instantly. So i tried to give it gas method…So i give hold the gas just enough like 2k and it stays running…but once i rev it once it dies right after taht. When i give it a double rev. it wont rev the second time…it backfires I think its a distrubtor/spark plug/Timing off? problem what do you guys think? or can the timing be off? Once it starts it idle about 1,500 rpm…it wont get any lower…any suggestion? ---
**Author:** ![Zer0DazE](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/zer0daze/32/7624_2.png) [@Zer0DazE](https://forums.speedlife.net/u/Zer0DazE)\ **Post date:** [January 2, 2008, 6:35am UTC](https://forums.speedlife.net/t/lets-play-name-this-sensor-and-help-with-rough-start-idle-civic-d15b7/41080/2 "2008-01-02T06:35:21Z")
coolant temp sensor? ---
**Author:** ![SilverGT](https://avatars.discourse-cdn.com/v4/letter/s/8dc957/32.png) [@SilverGT](https://forums.speedlife.net/u/SilverGT)\ **Post date:** [January 2, 2008, 7:00am UTC](https://forums.speedlife.net/t/lets-play-name-this-sensor-and-help-with-rough-start-idle-civic-d15b7/41080/3 "2008-01-02T07:00:02Z")
would this being unplug give me no reading on the gauge? but for some odd reason it does show a reading on the gauge though… ---
**Author:** ![psychopjv](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/psychopjv/32/7251_2.png) [@psychopjv](https://forums.speedlife.net/u/psychopjv)\ **Post date:** [January 2, 2008, 7:05am UTC](https://forums.speedlife.net/t/lets-play-name-this-sensor-and-help-with-rough-start-idle-civic-d15b7/41080/4 "2008-01-02T07:05:34Z")
thats just a connector, where’s the actual thing it plugs into. ---
**Author:** ![MXS](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/mxs/32/7507_2.png) [@MXS](https://forums.speedlife.net/u/MXS)\ **Post date:** [January 2, 2008, 7:09am UTC](https://forums.speedlife.net/t/lets-play-name-this-sensor-and-help-with-rough-start-idle-civic-d15b7/41080/5 "2008-01-02T07:09:21Z")
> [@SilverGT](#): > > would this being unplug give me no reading on the gauge? but for some odd reason it does show a reading on the gauge though… There are multiple coolant temp sensors… there’s the one for the gauge, one for the fan switch, one for the ECU… I think that’s all ---
**Author:** ![psychopjv](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/psychopjv/32/7251_2.png) [@psychopjv](https://forums.speedlife.net/u/psychopjv)\ **Post date:** [January 2, 2008, 7:13am UTC](https://forums.speedlife.net/t/lets-play-name-this-sensor-and-help-with-rough-start-idle-civic-d15b7/41080/6 "2008-01-02T07:13:20Z")
ooooooooo found some good pics for you. one is gauge and one is computer. ---
**Author:** ![SilverGT](https://avatars.discourse-cdn.com/v4/letter/s/8dc957/32.png) [@SilverGT](https://forums.speedlife.net/u/SilverGT)\ **Post date:** [January 2, 2008, 7:29am UTC](https://forums.speedlife.net/t/lets-play-name-this-sensor-and-help-with-rough-start-idle-civic-d15b7/41080/7 "2008-01-02T07:29:32Z")
man pyschojv you have everything i have asked for lol…you are my guru for manual/pictures of stuff… ---
**Author:** ![psychopjv](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/psychopjv/32/7251_2.png) [@psychopjv](https://forums.speedlife.net/u/psychopjv)\ **Post date:** [January 2, 2008, 7:31am UTC](https://forums.speedlife.net/t/lets-play-name-this-sensor-and-help-with-rough-start-idle-civic-d15b7/41080/8 "2008-01-02T07:31:04Z")
anytime! ---
**Author:** ![justa4door](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/justa4door/32/7259_2.png) [@justa4door](https://forums.speedlife.net/u/justa4door)\ **Post date:** [January 2, 2008, 7:45am UTC](https://forums.speedlife.net/t/lets-play-name-this-sensor-and-help-with-rough-start-idle-civic-d15b7/41080/9 "2008-01-02T07:45:17Z")
if the temp sensor is shot on the head this will lead to the car not starting once it ran for a few min…and the best place to get them is go to m&m and pull like 3 off one will work ---
**Author:** ![SilverGT](https://avatars.discourse-cdn.com/v4/letter/s/8dc957/32.png) [@SilverGT](https://forums.speedlife.net/u/SilverGT)\ **Post date:** [January 2, 2008, 8:06am UTC](https://forums.speedlife.net/t/lets-play-name-this-sensor-and-help-with-rough-start-idle-civic-d15b7/41080/10 "2008-01-02T08:06:18Z")
lol. i hear that m&m for this weekend! ---
**Author:** ![Zer0DazE](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/zer0daze/32/7624_2.png) [@Zer0DazE](https://forums.speedlife.net/u/Zer0DazE)\ **Post date:** [January 2, 2008, 8:27am UTC](https://forums.speedlife.net/t/lets-play-name-this-sensor-and-help-with-rough-start-idle-civic-d15b7/41080/11 "2008-01-02T08:27:23Z")
> [@MXS](#): > > There are multiple coolant temp sensors… there’s the one for the gauge, one for the fan switch, one for the ECU… I think that’s all truth. with that connector unplugged your ecu isn’t using the proper ECT multiplier for the fuel and spark. so your car will run like shit. ---
**Author:** ![SilverGT](https://avatars.discourse-cdn.com/v4/letter/s/8dc957/32.png) [@SilverGT](https://forums.speedlife.net/u/SilverGT)\ **Post date:** [January 2, 2008, 8:32am UTC](https://forums.speedlife.net/t/lets-play-name-this-sensor-and-help-with-rough-start-idle-civic-d15b7/41080/12 "2008-01-02T08:32:39Z")
Could this cause the high idle and rough start? ---
**Author:** ![Zer0DazE](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/zer0daze/32/7624_2.png) [@Zer0DazE](https://forums.speedlife.net/u/Zer0DazE)\ **Post date:** [January 2, 2008, 8:35am UTC](https://forums.speedlife.net/t/lets-play-name-this-sensor-and-help-with-rough-start-idle-civic-d15b7/41080/13 "2008-01-02T08:35:16Z")
yes. there are 7 known tables that need data from that sensor ect fuel comp ect fuel idle comp 2 ect ign retards 2 ect ign advances 1 that uses ect vs iat its a pretty important that it is working properly. if you have the means, or know someone with a ecu set up for datalogging, give that a try. it makes finding shitty sensors a breeze. ---
**Author:** ![SilverGT](https://avatars.discourse-cdn.com/v4/letter/s/8dc957/32.png) [@SilverGT](https://forums.speedlife.net/u/SilverGT)\ **Post date:** [January 2, 2008, 8:39am UTC](https://forums.speedlife.net/t/lets-play-name-this-sensor-and-help-with-rough-start-idle-civic-d15b7/41080/14 "2008-01-02T08:39:28Z")
I also forgot to say it has a check engine light…so im assuming that could also be the culprit… i guess the sensor was probably caked with oil so taht why i didnt see the sensor…but i will check it out tonight. and see what it could do for me! thanks guys ---
**Author:** ![justa4door](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/justa4door/32/7259_2.png) [@justa4door](https://forums.speedlife.net/u/justa4door)\ **Post date:** [January 2, 2008, 10:28am UTC](https://forums.speedlife.net/t/lets-play-name-this-sensor-and-help-with-rough-start-idle-civic-d15b7/41080/15 "2008-01-02T10:28:27Z")
> [@SilverGT](#): > > I also forgot to say it has a check engine light…so im assuming that could also be the culprit… i guess the sensor was probably caked with oil so taht why i didnt see the sensor…but i will check it out tonight. and see what it could do for me! thanks guys what code is it throwing ? that would also help a lot of us out if you need one of us to tell you how to do that let us know …ill even post pic for you… but make sure you have the high priced “paper clip” to check it ---
**Author:** ![ieatpaint](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/ieatpaint/32/7311_2.png) [@ieatpaint](https://forums.speedlife.net/u/ieatpaint)\ **Post date:** [January 2, 2008, 11:01am UTC](https://forums.speedlife.net/t/lets-play-name-this-sensor-and-help-with-rough-start-idle-civic-d15b7/41080/16 "2008-01-02T11:01:25Z")
I’ve got a known good one, i’ll try to pull it tonight, i’ll pm you when i get it off. ---
**Author:** ![boardjnky4](https://avatars.discourse-cdn.com/v4/letter/b/96bed5/32.png) [@boardjnky4](https://forums.speedlife.net/u/boardjnky4)\ **Post date:** [January 2, 2008, 11:05am UTC](https://forums.speedlife.net/t/lets-play-name-this-sensor-and-help-with-rough-start-idle-civic-d15b7/41080/17 "2008-01-02T11:05:22Z")
you went through all the trouble of taking pics and making and responding to this thread when you could have just as easily pulled the ecu codes? come on now man, get the codes, then post if you still have questions. ---
**Author:** ![justa4door](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/justa4door/32/7259_2.png) [@justa4door](https://forums.speedlife.net/u/justa4door)\ **Post date:** [January 2, 2008, 11:17am UTC](https://forums.speedlife.net/t/lets-play-name-this-sensor-and-help-with-rough-start-idle-civic-d15b7/41080/18 "2008-01-02T11:17:52Z")
> [@boardjnky4](#): > > you went through all the trouble of taking pics and making and responding to this thread when you could have just as easily pulled the ecu codes? come on now man, get the codes, then post if you still have questions. i thought i was the only one that was bothered by this :gotme: ---
**Author:** ![SilverGT](https://avatars.discourse-cdn.com/v4/letter/s/8dc957/32.png) [@SilverGT](https://forums.speedlife.net/u/SilverGT)\ **Post date:** [January 2, 2008, 11:21am UTC](https://forums.speedlife.net/t/lets-play-name-this-sensor-and-help-with-rough-start-idle-civic-d15b7/41080/19 "2008-01-02T11:21:48Z")
the check engine light is off right now…it was on when i had it…it turned off when i was messing with the iac sensor last night it was slightly unplugged. ---
**Author:** ![justa4door](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/justa4door/32/7259_2.png) [@justa4door](https://forums.speedlife.net/u/justa4door)\ **Post date:** [January 2, 2008, 11:22am UTC](https://forums.speedlife.net/t/lets-play-name-this-sensor-and-help-with-rough-start-idle-civic-d15b7/41080/20 "2008-01-02T11:22:51Z")
so why did you think it was a heat sensor…never mind ill stop i bet the light was the iac /im out [Next page](https://forums.speedlife.net/t/lets-play-name-this-sensor-and-help-with-rough-start-idle-civic-d15b7/41080.md?page=2)