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Can't get trouble codes

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Old 09-21-2005, 10:26 AM
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Default Can't get trouble codes

I've tried to get the trouble codes out of my 94 trans am with a scanner ( a cheaper one, those from wal mart) and with a paper clip but the only thing that happens is the fan turns on and no codes or blinking. any ideas?
Old 09-21-2005, 04:24 PM
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OBD-1, if you jumper the mode select To Gnd. in the ALDL connector you should get the fan as well as at least a code 12 (flashed on the Check Engine Light). Does the Check Engine Light come on steady with just the ign. on?
Old 09-21-2005, 06:38 PM
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No code 12 and the check engine light keeps turn off

Last edited by maganeztransam; 09-21-2005 at 06:58 PM.
Old 09-22-2005, 12:43 PM
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I think you need to use a scanner for '94

http://shbox.com/1/dlc2.jpg
Old 09-22-2005, 01:05 PM
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Default no code

I think if you have the upper connector it should work- not sure with the lower. 94-95 were transition years to obdii.
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Old 09-22-2005, 11:13 PM
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I guess I do need a good scanner. Bad luck. damn it.




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