I bought an 85 IROC a little over a year ago for 800 bucks, anyways i got the thing running over the summer but i know after sitting for so long (it sat in a field most of its life), its gotta be throwing codes. Sooo, without using an expensive scan tool, how would i go about checking the codes? I looked in the tech articles but didn't see anything, maybe i missed it or something.

Thanks for the help,
Eric

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My 1986 Z2814.59@95.6

GM350, T-5, 3.23's, lots of go fast goodies, 4th gen Firebird interior etc...
85 IROC w/ 1364 miles! no times yet, just got it to start.

You'll always find what you've lost in the last place you look

R.I.P Dale Earnhardt

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https://www.thirdgen.org/newdesign/faq/thirdgen.shtml

It's in the Miscellaneous section at the bottom.

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Black 88 GTA L98
271 RWHP, 344 RWTQ
13.406 @ 103.72 MPH
ZZ4 bottom end, Edelbrock 6085 heads, LT4 HOT cam, GMPP 1.6 RR's, ported stock TPI, SLP 1 3/4" headers, no cat, Dynomax cat-back, Stock PROM
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Zup,

You could also do an archive search. You'd probably find a link to this file:

GM Error Codes.pdf

It has everything you'll need except the paper clip.

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Later,
Vader
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If you want to beat the World, it might reach up and pull you down...
Adobe Acrobat Reader

 

Thanks guys,

Eric