alright, im new be gentle. my 94 z28 runs great but the ses light keeps going on and off. only off at idle in gear, on after 1000 rpms. i got it scanned, and i did not see what kind he had but he told me codes 27,32 were in there and also a 29, but he said that hasnt been sent for a while. i just took the intake off(rear oil leak) and i changed the egr and solinoid? two vacum lines and a plug near egr. started up and within 4 minutes the light was back on. the car runs great i ran a 14.13 all stock with 2.73's and the ses light on. do i just need these codes cleared out now or did i miss something. thanks

 

did you disconnect the battery for more then 30 mins?

 

The battery was disconnected for more than 4 hours during intake gasket replacment.

 

did you check all of the electical connection? make sure the plugs were in good condition and clean. also, check all the wires make sure they aren't broken.

 

the motor has 58,000 on it and has never been touched. it runs so good but the light, and fans are very annoying

 

you need to check your connections down by the passenger side O2 sensor. There are a group of wires there. When I melted those wires during a header install, I got the exact same codes. Also make sure that you have connected everything correctly relating to the EGR system. All those codes that you are getting are EGR related...

27: EGR Electrical Fault
29: EAS Electrical Fault (Air/Pump Circuit)
32: EGR System Fault

Also, make sure that all your fuses are good as well.