In my 86 Z, it started to through a check engine code. What pins do you have to jump on the code reader to have it flash the engine code? Thanks!

 

It's the two in the upper right. The connector is under the steering column and slightly to the right. Go to AutoZone. They have the key to trip it with. They gave us one for free.

Once you trip the codes, post em here and I'll let you know what you are.

 

It came up code 12.

 

I looked it up on a web site and it said it was No reference pulses to Electronic Control Module (ECM)...What does that mean?

 

Code 12 No engine RPM reference pulses--System Normal

 

If the system is normal, why is the light on? How do I get it to turn off? I tried reseting the code (Unhooking the battery), but it came right back on? What should I do? Thanks!

 

http://www.thirdgen.org/faq/thirdgen.shtml#misc this site has a good artice on this topic

 

Try it with the engine running. If you trip it with the motor off, you will ALWAYS get 12. It's how you know the ECM is working.

 

Could it be that it is getting a short which causes it to light up?

 

Could it be because some dumb*** (The guy that owned it before me) removed the smog pump? Isn't that controlled electronicaly?

 

the code blinks 12 times to tell you its ready!

 

True. However there is no feedback to the ECM from the smog unit.