1997 Galant: idle problem

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morshedbashir@gmail.com - 27 May 2006 20:14 GMT

Hi,
97 Galant ES, 2.4L auto trans, 93000miles. Last friday, when I started
the car at noon after a break of about 30 mins, the car stalled. In the
morning I noticed the rpm was low on drive (around 600), but it never
stalled. I towed the car to the garage. There it started fine, but the
check engine light was ON. After connecting the code reader ("snapon"),
the engine started to rev up and down between 1000 to 1500 at idle. The
code reader says "idle speed control motor" is bad. The mechanic also
told me that I should change front and rear O2 sensors as the readings
are out of range. I will be ordering the parts through the dealer on
Monday.
I am posting this to get you guys expert opinion on this and/or
sugestions before I actually go and order the parts.
Thanks in advance.

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simpleton - 27 May 2006 21:20 GMT

A new ISC from the dealer is costly. You can find them all over Ebay that
still test good. http://search.ebay.com/4g63-isc_W0QQfkrZ1QQfromZR8
The ISC is a stepper motor that controls a valve seat in the throttle body.
The computer send a signal to it's coils causing it to open or close an air
by-pass which controlls idle speed. They can be checked in minutes with a
meter to see if they're any good and some folks even repair them.
http://dmtalon.v8eaters.com/ISC.html

http://www.dsm.org/how-tos/tttt/tttt3.html

If I had your problem, I'd clean the throttle and all of the intake parts
with M.C.C.C. or SeaFoam.

If you do need parts http://www.jnztuning.com/ These guys have been around
and are trusted. Pricing is well below the dealer and shipping is fast.
I've been doing business with Josh for almost a decade.

> Hi,
> 97 Galant ES, 2.4L auto trans, 93000miles. Last friday, when I started
[quoted text clipped - 10 lines]
> sugestions before I actually go and order the parts.
> Thanks in advance.

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