Ok, I tracked my problems with no start to the fuel pump not kicking on. Its a fault in the + side. What in that line can go bad? Whats the routing of the wire?

More importantly where is a good place to splice in a new + wire for the fuel pump? I know it has to be fused, so could I just splice it into the EGI INJ fuse? Or is 40A too much?

I ran a wire straight from the battery to the + wire on the pump and it worked just fine, so its gotta be something between the EGI fuse and the fuel pump. And yes EGI fuse is good. Who ever canh elp me out gets all the thanks in the world, as this is the last little missing link to getting my car started.

 

Have you jumped the test connector yet?

 

no, what would that do? sorry, im pretty ignorant when it comes to wiring on rx7's. and where is that located?

 

Its a yellow 2-pin plug located by the passenger side strut tower. This bypasses the interlock that exists in the AFM and will enable you to run the pump in the key "on" position with the engine not running.

It will also enable you to start he car normally if the aforementioned interlock is malfunctioning.

 

so if i remove this connector and just connect the wires (if its faulty) this will allow the pump to work as normal? Ill go try that quickly and see what it does.

 

hmm. i couldnt locate this plug. perhaps the previous owner moved it or already bypassed it?

 

No, its there.. All you have to do is stick some wire between the two pins... Let me find a pic..

 

ok, please do. i looked all over the strut tower, around the air box, behind the strut tower by the cold start assist bottle, and even on the other side of the bay.

also while on the fuel pump topic, what controls the fuel pump turning on and off. like when you turn the key to "on" it will come on until pressure builds then it will click off. is this in pump controls or something external?

 

When you turn the key on, it will NOT come on. Until you crank the car. Once you do this, it engages the AFM interlock that allows it to come on.

Do you have an FSM handy?

 

The fuel pump runs only when the car is in one of the following 3 situations.

1. Starting
2. Running
3. With the test connector jumpered and the key in the On position.

 

yeah i have a fsm. by memory what i read said when trouble shooting the fuel pump, when you turn on the key you should get the fuel pump on for several seconds then it will turn itself off after system is primed... my haynes manual did me no good, but i havent checked the fsm yet.

 

In correct.

 

doesnt work for me... n/m

I found it in the fsm but it shows the pins on the main afm plug. am i looking the the right ones?

 

N4b-69

 

I found 2 2 prong plugs in that area. 1 was white with 1 prong turned sideways and the other straight, the other had the plastic housing/plug removed and was just 2 wires with female connectors on it. neither of which did anything when i jumped them.

 

****, n/m, got the pump working and it still wont crank. damnit, oh well. i was almost 100% sure this was the reason. now im gonna look at my injectors i guess. they are hooked up right yet i still dont smell any fuel coming from exhaust or anything. im thinking ive got fuel pressure the injectors just arent firing for whatever reason. anything control injector firing other than ecu? something i could have accidentaly left unplugged or broke the wire to?

 

That is true for most newer cars, but not the 2nd gen RX-7.

Just a FYI.

James

 

So the fuel pump is only operating under 3 conditions, starting, running and test jumper ? So if you redid the fuel lines, you would have to crank the engine to prime the fuel system up.. Or would you be able to wire the pump to the battery and prime the system before cranking ?

 

Why do you need to prime the lines? And if you hooked the battery straight to the pump wouldn't it run 24/7...

 

I fixed my problem. it was me being in a bit of a hurry and I had the fuel lines reversed Runs but now for some reason my brakes dont work. No fluid in the res. so now I have to bleed them and then find where I have a mystery leak that is causing all sorts of smoke. Then I should be road worthy