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

Need help...please..

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Old 12-03-2008, 01:30 PM
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Default Need help...please..

Okay, Okay. He he.

Here goes, I have 4 trouble codes.

15, 16, 26, 36...

I know the 16 and 36 are my opti being bad, and 26 is the air and egr and crap, but what is 15??? I want to get all my ses light crap off. please help!!! thanks!
Old 12-03-2008, 01:32 PM
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code 15 is coolant sensor circuit, low temperature indicated.
Old 12-03-2008, 01:36 PM
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code 26 is Evap vacuum purge control solenoid circuit, not egr. The other two codes 16, 36 are low and high resolution problems in the igniton(opti) as you stated.
Old 12-03-2008, 01:37 PM
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is 15 because the car hasn't been started at all in like a week or two??? and thats why its throwing that code?? or is the sensor bad???

also what sensor is bad if one???
Old 12-03-2008, 03:39 PM
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Sent pm.
Old 12-03-2008, 04:00 PM
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thank you..



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