Check engine light

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Check engine light - 3/5/2008 4:37:26 PM    countryguy1713   Posts: 30 Joined: 2/5/2008 Status: offline My check engine light came on today and someone told me to plug 2 paperclips in the to computer plug in and turn the key on...when i did this the check engine light flashed once paused then flased twice so im guessin that means the code is 12...does anyone know what that means or how i can find out what it means Post #: 1

RE: Check engine light - 3/5/2008 4:52:17 PM    swartlkk Posts: 15304 Joined: 5/1/2005 From: Waterloo, NY Status: online In looking back through all of your threads, I see that you have a '93 4x4.  Please include this information in your posts if you are seeking help with a problem so those of us wishing to help do not have to dig for that information. *Moving to 1st Gen Tech* Does this pertain to the two other threads you have open on the subject of rough idle?  If so, please try to keep everything together.  I will be closing your other threads in an effort to consolidate things down to a single problem thread.  This will reduce overlap in suggestions and avoid confusion. < Message edited by swartlkk -- 3/5/2008 5:09:46 PM > _____________________________ Kyle- My Restoration Projects Please Do Not PM for Tech Help (in reply to countryguy1713) Post #: 2

RE: Check engine light - 3/5/2008 4:57:53 PM    countryguy1713   Posts: 30 Joined: 2/5/2008 Status: offline Oh yeah that probably would be a little helpful its a 93 s10 blazer with a 4.3 L Vin W (in reply to swartlkk) Post #: 3

RE: Check engine light - 3/5/2008 5:16:49 PM    swartlkk Posts: 15304 Joined: 5/1/2005 From: Waterloo, NY Status: online Does the CEL only blink the 12 and then nothing else?  If there are more codes pending, it should blink 1, then 2, longer pause, then the next two digit code.  If I remember right, it should flash 12 again when all of the codes have been displayed... _____________________________ Kyle- My Restoration Projects Please Do Not PM for Tech Help (in reply to countryguy1713) Post #: 4

RE: Check engine light - 3/6/2008 12:19:58 PM    86S10 Posts: 60 Joined: 12/8/2007 Status: offline wait, do all 1st gens have this paperclip trick? (in reply to swartlkk) Post #: 5

RE: Check engine light - 3/6/2008 12:53:07 PM    swartlkk Posts: 15304 Joined: 5/1/2005 From: Waterloo, NY Status: online Yes, all 1st gens with OBD1 should be able to be diagnosed with the paper clip trick.  If you have a plug under the dash, you should be able to do this.  Trucks with a carb, well...  You don't have OBD.. _____________________________ Kyle- My Restoration Projects Please Do Not PM for Tech Help (in reply to 86S10) Post #: 6

RE: Check engine light - 3/7/2008 4:28:04 PM    Hanr3 Wheels & Tire Moderator Posts: 3523 Joined: 5/11/2005 Status: offline It should repeat the codes three times. _____________________________ "Some people spend an entire lifetime wondering if they made a difference. The Marines don't have that problem." -President Ronald Reagan '87 S10-Blazer - SOLD '93 S10-Blazer 4x4x4 - Sons DD, engine swap is done. '00 S10-Blazer 4x4x4 - My (in reply to swartlkk) Post #: 7

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