Rough Idle in 1999 Prelude

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Rough Idle in 1999 Prelude
MaWeiTao 6 April 2005 05:30:50
	I have a 1999 Prelude, non-SH. Quite some time ago I got a check engine light. I pulled the code and it indicated a problem with the CKP/TDC sensors. Despite that the car ran fine. Last week I found the car to be idling roughly; it's RPMs were lower than they should be. Once I got home, with the car sitting in idle the check engine light started flashing. I checked the code again and it returned the same one for those sensors. So I finally had the sensors replaced. As I approached home the check engine light came on yet again and when coming to a stop the engine was idling roughly. When sitting at home I revved the engine slightly; it hesitated a bit and the revs then dropped back and the car died. I am still able to start the car and drive it around. The thing to note is that the car is fine when cold; it starts idling roughly when it gets warm. When driven the car seems to run more or less fine; I get the feeling that it isn't quite right, but the problem is really only exhibited when I come to a stop and the car is idling. I am hoping someone has any idea what might be causing this. Any advice would be appreciated.
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Myrone Bagalay 6 April 2005 15:19:51 [ permanent link ]
	yes its because you bought a honda ;) just kidding that sounds like a TPS my friend. They are pricey go to the junk yard and see if you can find one decently priced. -- Enorym http://atomicinternet.homeip.net/xtra/myrone/ Enorym@gmail.com "MaWeiTao" <hanshiro@hotmail.com> wrote in message news:IIG4e.1049$uT5.454@fe09.lga...> I have a 1999 Prelude, non-SH. Quite some time ago I got a check engine > light. I pulled the code and it indicated a problem with the CKP/TDC > sensors. Despite that the car ran fine.> Last week I found the car to be idling roughly; it's RPMs were lower than > they should be. Once I got home, with the car sitting in idle the check > engine light started flashing. I checked the code again and it returned > the same one for those sensors.> So I finally had the sensors replaced. As I approached home the check > engine light came on yet again and when coming to a stop the engine was > idling roughly. When sitting at home I revved the engine slightly; it > hesitated a bit and the revs then dropped back and the car died. I am > still able to start the car and drive it around.> The thing to note is that the car is fine when cold; it starts idling > roughly when it gets warm. When driven the car seems to run more or less > fine; I get the feeling that it isn't quite right, but the problem is > really only exhibited when I come to a stop and the car is idling.> I am hoping someone has any idea what might be causing this. Any advice > would be appreciated.>
		Add comment


Myrone Bagalay 6 April 2005 15:20:52 [ permanent link ]
	if you changed the tps allready make sure its adjusted properly it must be addjusted perfectly if its a hair off it will act funny apon acceloration and idel. -- Enorym http://atomicinternet.homeip.net/xtra/myrone/ Enorym@gmail.com "MaWeiTao" <hanshiro@hotmail.com> wrote in message news:IIG4e.1049$uT5.454@fe09.lga...> I have a 1999 Prelude, non-SH. Quite some time ago I got a check engine > light. I pulled the code and it indicated a problem with the CKP/TDC > sensors. Despite that the car ran fine.> Last week I found the car to be idling roughly; it's RPMs were lower than > they should be. Once I got home, with the car sitting in idle the check > engine light started flashing. I checked the code again and it returned > the same one for those sensors.> So I finally had the sensors replaced. As I approached home the check > engine light came on yet again and when coming to a stop the engine was > idling roughly. When sitting at home I revved the engine slightly; it > hesitated a bit and the revs then dropped back and the car died. I am > still able to start the car and drive it around.> The thing to note is that the car is fine when cold; it starts idling > roughly when it gets warm. When driven the car seems to run more or less > fine; I get the feeling that it isn't quite right, but the problem is > really only exhibited when I come to a stop and the car is idling.> I am hoping someone has any idea what might be causing this. Any advice > would be appreciated.>
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Jehu 10 April 2005 05:25:46 [ permanent link ]
	I had a low/rough idle on my 2000 Civic SiR, Replaced Iac Valve (didn't fix), had base idle adjusted to highest level (didn't fix), finally I cleaned out the throttle body with some throttle body cleaner (or carb cleaner) and the idle was good. There was a buildup of carbon all along the bottom edge of the butterfly flap causing at idle to idle lower due to not enough air getting past. "Myrone Bagalay" <enorym@sbcglobal.net> wrote in message news:oCP4e.2957$qD2.2353@newssvr14.news.prodigy.com...> if you changed the tps allready make sure its adjusted properly it must be > addjusted perfectly if its a hair off it will act funny apon acceloration > and idel.> -- > Enorym> http://atomicinternet.homeip.net/xtra/myrone/> Enorym@gmail.com> "MaWeiTao" <hanshiro@hotmail.com> wrote in message > news:IIG4e.1049$uT5.454@fe09.lga...>> I have a 1999 Prelude, non-SH. Quite some time ago I got a check engine >> light. I pulled the code and it indicated a problem with the CKP/TDC >> sensors. Despite that the car ran fine.>> Last week I found the car to be idling roughly; it's RPMs were lower than >> they should be. Once I got home, with the car sitting in idle the check >> engine light started flashing. I checked the code again and it returned >> the same one for those sensors.>> So I finally had the sensors replaced. As I approached home the check >> engine light came on yet again and when coming to a stop the engine was >> idling roughly. When sitting at home I revved the engine slightly; it >> hesitated a bit and the revs then dropped back and the car died. I am >> still able to start the car and drive it around.>> The thing to note is that the car is fine when cold; it starts idling >> roughly when it gets warm. When driven the car seems to run more or less >> fine; I get the feeling that it isn't quite right, but the problem is >> really only exhibited when I come to a stop and the car is idling.>> I am hoping someone has any idea what might be causing this. Any advice >> would be appreciated.>>
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Rough Idle in 1999 Prelude

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