Raul <alpesh.patel@gmail.com> wrote in news:1193161768.823097.114530
@t8g2000prg.googlegroups.com:

> My 94 Civic has the check engine light on. Mechanic says its the O2
> sensor, which sounds reasonable. However, he says that the sensor is
> essentially melted onto the intake manifold, so that the IM needs to
> be replaced too. Does this make any sense? The IM replacement is way
> more expensive.
>


As Elle says, the sensor is in the EXHAUST manifold.

Mechanic should reset the Check Engine light and simply wait to see if it
comes on again. Often the problem will not recur.

It is important that you specify the actual numeric code that was
registered.

Even if the sensor does actually need to be replaced and is seized in the
manifold, you can still just wind it out of the hole, then re-cut the
threads in the manifold with a spark plug tap. A lot easier and cheaper
than a new exhaust manifold!

--
Tegger

The Unofficial Honda/Acura FAQ
www.tegger.com/hondafaq/