Need help getting 1991 back in operation

[dmaclennan]

Originally Posted by XfireZ51

Don,

I would go w Hans' suggestion and look at the chip. All LT-5 MY have 2 calibrations for them. If urs is AXFK, then its the original calibration and GM issued a second one which is the BFXB calibration. So I would make sure that u have the revised cal to begin w.

OK. Did not know that there were 2 calibrations from GM. Do you know what the BFXB changed? It's an original CA car and passed smog through 2001 at least, possibly as late as 2009. I'll check on the chip and get back.

Thanks,
Don