Elle wrote:
> <mmdir2005@yahoo.com> wrote
> > 89 civic with 220K miles on it.
> >
> > I think my best guess I've found out it that the Coolant
> > temperature
> > sensor
> > could be the problem. Where is the Coolant temp sensor in
> > my car?
> > The manual has no picture on it.
>
> Part #24 at
> http://www.hondaautomotiveparts.com/...SUB+CORD-CLAMP
>
> See also the drawing at
> http://media.honda.co.uk/car/owner/m...SH200/5-56.pdf
>
> Should be the same for your 89 Civic.
>

Is TW sensor located under distributor?


> > what about Throttle Angle Sensor or Intake Air
> > temperature sensor
> > beside EACV?
>
> The idle troubleshooting chart in my Chilton's manual for
> your 89 Civic says the coolant temperature sensor (a.k.a.
> "TW sensor") is the most likely cause. This chart appears in
> the free online manuals for your car at www.autozone.com ,
> under "Emissions Controls."
>
> The Throttle angle Sensor and Intake Air Temp sensor may
> cause other problems not consistent with your symptoms (so
> far).
>
> It could be the TW sensor. I think that's come up here
> before and is in the newsgroup archives.
>
> I'd still do the air purge. I'd still keep the EACV in mind.
> These too have come up as the source of idle problems. Just
> not sure if they cause 'engine cold' idle problems.
>
> > Is Curly saying that driving the car with turn the heater
> > on would
> > purge the air out?
> >
> > My oxygen senor is about 4 years old!.
>
> Is it OEM?

Yes, it OEM.