Hey all, this is my first post so I'll start by saying hi. To jump right into my question I'll try and give as much info as I can.

1987 Rx7 with 1990 turbo 2 engine 5 speed manual

So here's the issue, I was driving the car completely issue free for a couple years. I parked it, and the following year I went to start it and it just cranks like crazy. Will fire up briefly and then die. Now I have narrowed it down to the AFM I believe because if I prop open the flapper it runs and drives, just rich (obviously.) Also checked plugs, compression, fuel filter and fuel pump. I pulled the AFM to check resistances and gave it a good cleaning to make sure she wasn't sticking. Every thing checked out. So now I have the issue that I can't remember if I change the AFM for some dam reason and if I even have the correct one in here. I believe my car has S5 wiring harness, but I can't be sure. is there a visual means of telling s4 na/turbo apart from s5?

Thoughts? Thanks.

 

the s4 is flapper the s5 is a plunger.. also the plug is 5 wires on the S5, 7 on the s4.

turbo is n370
N/a is n350.

 

Bloody brilliant, thanks mate.