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OBD I Code Reader Info Needed.

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Old Nov 22, 2006 | 08:33 AM
  #1  
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Default OBD I Code Reader Info Needed.

Hey everybody! I own a 89 coupe and mainly through this forum I found out I need a OBD I code Reader for this animal...the problem is everywhere I go I find the OBD II cheap( 69.00-98.00) and no OBD I.

I have been to a couple of websites that have massively exspensive ones ( 300.00-700.00) that say they will read both but I ain't got that kinda jack to spend....

The only one I have found so far is this little dude

http://www.autoshoppingcenter.com/te...canner_GM.html

Is this all I need? Is there a better one out there cheaper?

Thank you for all of your past awesome info!

Happy turkey day to all

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Old Nov 22, 2006 | 09:05 AM
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All these cheapo readers do is short out some pins on the ALDL connector so you can read codes displayed on the dash cluster through a series of flashes and numeric displays. There is a tech tip that tells you how to do the same thing with a paper clip. A real dianostic tool like a Tech1 or Tech2 allows you to do far more, but will cost a lot of money.
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Old Nov 22, 2006 | 09:48 AM
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To rephrase what scrange said: To read fault codes all you need is a paperclip. See tech tips. If you want a full up scan tool plan to part with more than one Ben Franklin. Since you are asking the question go the paperclip and FSM route. If,and when you outgrow the paperclip think about a scaner. That last comment is directed at me more than you. I have bought not one but two laptops, Datamaster, RT Pro, plus some freebies and still do almost all my troubleshooting with a paperclip,a $1,00 test light and my FSM.
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Old Nov 22, 2006 | 09:50 AM
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http://members.shaw.ca/corvette86/No...it%20Check.pdf
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Old Nov 22, 2006 | 01:38 PM
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$38 for a paperclip in a plastic case ...''buy it now''...

i had to buy a whole box of paperclips, never one around when you need one...79cents IIRC...actually i gotta get a new box, current one is almost empty, use em all the time and they grow legs apparently.

i also have a $200 scanner that is worth having for 96 and ups, does help on earlier because it displays sensor inputs...if the paperclip isn't enough to find the gremblim.

old laptop and ''winaldl'' freebie software is best but a minor pita with inverter, patch cords, old laptop personality quirks
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Old Nov 22, 2006 | 02:37 PM
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Default Obd I reader

Originally Posted by Bob89c4
Hey everybody! I own a 89 coupe and mainly through this forum I found out I need a OBD I code Reader for this animal...the problem is everywhere I go I find the OBD II cheap( 69.00-98.00) and no OBD I.

I have been to a couple of websites that have massively exspensive ones ( 300.00-700.00) that say they will read both but I ain't got that kinda jack to spend....

The only one I have found so far is this little dude

http://www.autoshoppingcenter.com/te...canner_GM.html

Is this all I need? Is there a better one out there cheaper?

Thank you for all of your past awesome info!

Happy turkey day to all


Advanced Auto will download from diagnostic output and take it inside of store and print it out for you. Now thats awesome.
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Old Nov 22, 2006 | 04:06 PM
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Old Nov 22, 2006 | 09:00 PM
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I heard about the paper clip route, just saw this thing for 38 bucks and thought it might be the answer. Paper clips it is.

Thanks for the info.
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Old Nov 22, 2006 | 09:54 PM
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I agree with using the paperlip or better yet, go to Autozone and ask them if they can give you a free code key (two teeth for A and B terminals). It's a lot easier to use and is shaped to fit directly into the ALDL terminals.
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Old Nov 23, 2006 | 12:22 AM
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Indeed. Those types of "scanners" are nothing more than paperclips in a plastic case.
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Old Nov 23, 2006 | 12:38 AM
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Originally Posted by RRT vette
I agree with using the paperlip or better yet, go to Autozone and ask them if they can give you a free code key (two teeth for A and B terminals). It's a lot easier to use and is shaped to fit directly into the ALDL terminals.
with the comment on the free Auto Zone key:



However, I have a laptop and Turbo Link for my scan software. The flashing SES light is OK, but you can see a lot more with the software....and do graphs too

Last edited by Sam Lam; Nov 23, 2006 at 07:26 AM.
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Old Nov 23, 2006 | 12:51 AM
  #12  
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[QUOTE=redrose]$38 for a paperclip in a plastic case ...''buy it now''...

i had to buy a whole box of paperclips, never one around when you need one...79cents IIRC...actually i gotta get a new box, current one is almost empty, use em all the time and they grow legs apparently.

i also have a $200 scanner that is worth having for 96 and ups, does help on earlier because it displays sensor inputs...if the paperclip isn't enough to find the gremblim.

not to hi-jack this thread, but is it worth getting a obdII scanner for my 91? or any other L98?

this one is on sale for $49.99 at harbor freight

http://www.harborfreight.com/cpi/cta...unction=Search
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Old Nov 23, 2006 | 12:58 AM
  #13  
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I was unaware that Autozone had such keys. I'll get one next time I'm there.
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Old Nov 23, 2006 | 09:05 AM
  #14  
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I was also not aware of that little key. I am off to auto zone tomorrow to see if they have any. Thanks Sam. Awesome car.

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Old Nov 23, 2006 | 10:33 AM
  #15  
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[QUOTE=f451degrees]
not to hi-jack this thread, but is it worth getting a obdII scanner for my 91? or any other L98?

this one is on sale for $49.99 at harbor freight
QUOTE]

the obd-II connector will not work on earlier obd-I cars, connector shape is different.
some obd-II scanners have software to display obd-I car data, but you need an adapter (abt $40) to connect up....if you have info to interpret the sensor inputs, it can be extremely helpful.
the harbor fright sale item does not look like it will work on your car, but read the package ( i have not)....always, always, always read the package when buying a scanner, to avoid bringing home something that will work on your wifes car but not yours
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