Re: check engine light

[Steve Manning <stephenm@ix.netcom.com>]

At 12:37 AM 10/2/96 -0400, Chris Lemon wrote:

>Anyone have any ideas on this one...I've almost reached the end of my rope
>of  knowledge...but would like very much to solve this...
>
>I keep getting the infamous "check" warning in my 90 (115k)...and I'm
>getting real tired of it!  Here's why:
(snip of frustrating details)

Chris - I feel your pain!!; I've had to to fix numerous 'check engine'
lights in my '88 90q before..

Shot in the dark - disconnect the electrical plug that goes to your
idle/full throttle switch.  See if your 'check engine' light goes away.
Sometimes those switches get flaky and confuse the ECU.  You'll get a
diagnostic for the switches being offline but it'll be interesting to see if
it eliminates your other code or 'check' lamp.

Another possibility - ECU temp sensor is _right_.  Are you on the verge of
overheating?  The ECU will give a warning (and flash the 'check' light) when
it detects the water temp getting too high for its liking (and it doesn't
like it too much above normal).  Fan/radiator/relay/thermoswitch problem maybe?

These are somewhat long shots, although they have fixed some of my problems
in the past.  E-mail/call if you want to discuss further, I can go on for
hours on these problems!!!......SLM

Steve Manning:	stephenm@ix.netcom.com (Metro D.C. area, USA)
.....Mainly Mopars, one '88 Audi 90Q (may her brother RIP), misc stuff