LT1-LT4 Modifications 1993-97 Gen II Small Block V8

OBD I question

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Old Mar 29, 2007 | 08:54 PM
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Question OBD I question

Do codes get stored in an OBD I computer or does the SES light have to be lit for a code to show up? Sometimes the SES light comes on in my '95 Z after driving about 1/2 hr but usually goes off after a few minutes. It is never on when I start the car or when I'm actually planning on getting the car scanned.
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Old Mar 30, 2007 | 05:14 PM
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The codes are stored till they are cleared by a scan tool.
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Old Mar 30, 2007 | 06:03 PM
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Cool. Thanks. I'll have to get it scanned this weekend.
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Old Mar 30, 2007 | 06:48 PM
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Take the car to Advance Auto, they can scan it for free!
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Old Mar 30, 2007 | 07:06 PM
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Didn't think advance/auto zone can read codes on a '95 - they're OBDI with an OBDII DLC port?
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Old Apr 13, 2007 | 01:10 AM
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How do you read the codes on an OBD1 comp?
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Old Apr 13, 2007 | 01:23 AM
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Yeah, pretty much any free auto parts scan place will not be able to read the 95 because of the newer port/older computer oddity.

To read it you just need a cable (akmcables.com, moates.net, etc) and some free software.
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Old Apr 13, 2007 | 07:58 AM
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Do you know if any of the free software works on a Mac laptop?
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Old Apr 13, 2007 | 09:28 AM
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if they have a GOOD scanner they can...My actron scanner will read OBDI and OBDII and came with cables for GM, Ford, Chrysler and even a few forein cars (those cables are still in the wrappers!). It came with an OBDI cable and OBDII cable for GM - it will read ANYHING as far as I can tell. It certainly reads my '95 with OBDI computer and OBDII connector.
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Old Apr 14, 2007 | 09:52 PM
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Originally Posted by Sunset01SS
Do you know if any of the free software works on a Mac laptop?
Not natively, but you can use parrellels/boot camp or virtual pc for pre-intel ones. I've used it with virtual pc on a powerbook g4 and never had a problem.
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