1991 ZR1 ODB1 Port Location

[scottfab]

Originally Posted by roadczar

~56,000. If I will be going through the trouble of pulling of the intake
I might as well also do the rest as suggested?

- Fuel injectors
- Coil packs
- spark plugs/wires
- Fuel pumps

Anything else? Would like to remove as much emmissions related mess as I can (really don't want to pull the heads)

If you're going to bulk replace parts might as well hit the O2 sensors.
If it were me I'd clear the codes then go for a drive until a code sets then dump the codes and find out what's wrong and go at the codes in the order the come out. The exception would be injectors if they are OEM. They need to come out as was mentioned.