dont really know where to post this but as i was going to buy a new o2 sensor and a egr valve they asked me what type of engine i had if it was either a z code or a w code. where do i find this information out? is it in the VIN or is it on the engine? a little bit of info would be nice. thanks

 

Well, what do you drive??

 

that would help wouldnt it....1994 chevrolet s10 2 wheel drive. 4.3 liter

 

VIN
Knowing the vehicle will identify which one.

 

VIN Z == TBI (RPO LB4)
VIN W == CPI (RPO L35)

The engine character is the 8th in the VIN. RPO list is in your glovebox.

 

thanks guys. love this forum.

 

swartz the man!!!!!