Honda Car Forum

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.

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.
>

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.
>

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
newsCP4e.2957$qD2.2353@newssvr14.news.prodigy.co m...
> if you changed the tps allready make sure its adjusted properly it must be
> addjusted perfectly if its a hair off it will act funny apon acceloration
> and idel.
>
> --
> Enorym
> http://atomicinternet.homeip.net/xtra/myrone/
> Enorym@gmail.com
> "MaWeiTao" <hanshiro@hotmail.com> wrote in message
> news:IIG4e.1049$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.
>>
>
>