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'[OT] Re: ALDL information?'
2005\12\12@164116 by William Couture

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On 12/12/05, Danny Sauer <spam_OUTpiclistTakeThisOuTspamdannysauer.com> wrote:
> This weekend, I bought a new car.  Well, not really a "new" car, since
> it's a '95 Caprice Wagon (I have to be the only person who buys a 10
> year old full-size station wagon with a V8 to get *better* mileage),
> but it's new to me.  The check engine light comes on occasionally.
> I'm pretty sure I know what the problem is, but I'll have to ask the
> computer to back my guess up.

If it's a 1995, it will use OBD (not OBD-II), and you shouldn't
need any fancy equipment to read it.

Use your key to switch the ignition ON and OFF rapidly 3 times,
leaving it ON after the sequence.

The "check engine" light will then blink out a sequence of 2-digit
codes which contain the diagnostic information (for example, on
my 1995 Neon, "blink-blink-pause-blink-pause-pause" is 21,
which corresponds to O2 sensor.

See, for example,
  http://www.allpar.com/fix/80s-codes.html
or
  http://www.troublecodes.net/technical/

Bill

--
Psst...  Hey, you... Buddy...  Want a kitten?  straycatblues.petfinder.org

2005\12\12@233855 by Danny Sauer

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William wrote regarding '[OT] Re: ALDL information?' on Mon, Dec 12 at 15:43:
> If it's a 1995, it will use OBD (not OBD-II), and you shouldn't
> need any fancy equipment to read it.
>
> Use your key to switch the ignition ON and OFF rapidly 3 times,
> leaving it ON after the sequence.

Well, on GM vehicles the method is to short the upper two pins on the
right, and then turn the key to "run".  Except, on some '94 and '95 GM
vehicles - notably the LT1-equipped cars like the 'Vette,
Firebird/Camaro, and Caprice - there is no such procedure. :(  My '96
OBD-II Caprice is even more irritating, except that AutoZone will read
and reset the codes for free on OBD-II vehicles...

--Danny

2005\12\13@100759 by Mark Scoville

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> William Couture
> Sent: Monday, December 12, 2005 4:41 PM
>
> If it's a 1995, it will use OBD (not OBD-II), and you shouldn't
> need any fancy equipment to read it.

Not necessarily - 1995 was a grey area for OBD.

For what it's worth some 1995 GM vehicles (and others) were "somewhat"
OBDII - depends on the engine. My wife had a 1995 Chevy Blazer with one of
the "sorta OBDII compliant" engines. It had the same OBDII connector as our
2002 Olds, but none of the local repair shops could talk to the 1995 Blazer
port - only the Chevy dealer could seem to talk to it.

In our case we had a S3G4.319GFEJ engine which appears on this list as "Not
compliant"...

http://www.obdii.com/connector.html

-- Mark



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