So I could really benefit from a response before Monday when I take it to the shop. So I just bought a 91 2+2 na that was turbo'ed before(its JDM) and a 92 na engine was put in, the mechanic who did it was an obvious stunned c*nt because he hooked a vacuum line up to the rad cap instead of the overflow(we have no idea what the vacuum is for so we capped it). Im getting error code
33*: exhaust gas sensor circuit (left)
34: detonation sensor circuit
35*: exhaust gas temp. sensor circuit
53*: exhaust gas sensor circuit (right)

I'm wondering if those are turbo specific parts maybe? My check engine light is on. The car now and then has trouble started as if its flooded so it stalls, now and then the idle starts to roll up and down, theres a bit of a delay when you floor it, and it smells like its burning rich(i think the vacuum was sucking out coolant and causing the smell) it idles at about 1.4-1.6
1991 300zx 2+2 Fairlady TT with 92 NA engine

 

Obviously this guy that done it is very questionable for the vac line to rad overflow. My big question is, why would you put the N/A motor in instead of the TT?

I would suspect the ECU because the fuel pump controllers are different. When doing the N/A to TT swap you have to change ECU's. All the fuel maps would be different considering you don't have the turbo's pushing the extra air in.

Still don't know if this is what's throwing your codes.

Still at a loss for the TT to N/A swap.

 

The old engine was blown so I guess it's all he could find. I got a new fuel sending unit coming for my gauge and I'm grabbing the non turbo fuel pump in hopes that might help a bit. I guess I should swap ecu as well; connectors will be the same?

 

shotgunning problems in the dark with a mechanic that is an obvious idiot leads to heart attacks from frustration. blow that one off and find a TT for sale they really ain't that much nowadays