rx-7 obsessed

hey guys i am new to the tubo world just bought my first turbo car lastnight. i am used to a first gen so i could use some good discriptions. i will try my best to explain.

last night i bought a t2. it will crank start run for 3 to 5 seconds and no matter what you do it will die. it has 98 psi in the front and 92 in the rear. the turbo does spin and the bearings are in good shape. the rats nest has been removed how good i dont know and the egsaust has been steright piped as well as the air pump has been removed agina i dont know how well. as fas as i can see its still on the motor with the belt remover and the hose has been cut and sealed with electrical tape.

sorry for the newb explination but agian i am new to the turbo so try not to flame to much . any help would be much appreciated and i will answer and questions to the best of my ability.

o and i dont know if this makes a difference or not but it has as single pipe that is missing an egsaust donught. i dont know if that changes anything and as fas as i know the ports are wired open. thanks

85rx-7gsl-se

iTrader: (2)

Maybe AFM issue. I had a similar problem where my TII motor would start and then just quit. Turned out I was using the wrong AFM. While I figure you have the right AFM, bad wiring or a faulty AFM unit might cause an issue. Just a thought.

rx-7 obsessed

i will take a look is there a good way to test it?

85rx-7gsl-se

iTrader: (2)

You can check it with a meter to see the resistance between pins if I remember right. I think the info should be in the FSM. Their is an online copy you can download. I can't remember the link off the top of my head.

rx-7 obsessed

checked for the AFM being good and i found it dissconected so i reconnected it and it starts and just dies right away now be4 it would start run for 5 seconds then die now it just starts hits 1000rpm and dies. any thoughts

rx-7 obsessed

idn about this car lol

turboIIrotary

iTrader: (9)

check the timing

rx-7 obsessed

timing was fine right where it should be

SpeedOfLife

iTrader: (16)

btw 13bt's don't have 5th and 6th ports.

pfsantos

iTrader: (1)

So when you found out it wasn't plugged, you just connected it without testing, right? Test it to make sure you didn't fix one problem and create another one...definitely sounds AFM related.

When starting, fuel pump power comes from starting signal to ECU to Circuit Opening relay. When the engine starts and moves the AFM "flapper", it creates continuity for the fuel pump. When the engine stalls, the fuel pump turns off. Before you plugged it in, the engine was running off the fuel pump pressure created by the starting signal.

rx-7 obsessed

ahhhh ok i get it. there is no info on how to test the AFM in the FSM do you guys remember which pins u test resistance over?

rx-7 obsessed

can you use a NA s4 AFM on a s4t2

K.ronic

Page 60
http://www.wankel.net/~krwright/file...sion_cntrl.pdf

rx-7 obsessed

alright guys i have checked the AFM and its in spec i have tried changing it. with no luck it still just starts and dies right away. i had my dad hold the flap part way open still no effect. i think i have solved one problem like you said. the air flow meter was unplugged and the car would run for 5 seconds now it just starts and dies. what is next?

85rx-7gsl-se

iTrader: (2)

Fuel pump relay not hooked up right? Just another idea. When I switched to a Microtech standalone and had my fuel pump relay hooked up improperly, it would start fine and then die right after I let the key go to the run position. It sent power to the fuel pump when cranking, but cut voltage off when the key went to run so it got fuel to start, but went dry when you let off the key.

phoenix7

you getting plenty of fuel?

Your injectors are ok?

Your fuel filter is not clogged?

Your fuel pump getting the correct voltage?

You fuel pump still working (maybe the previous owner ran out of gas enough times to kill the pump?)

You have NO vaccuum leaks?? (double check to make sure the rats nest removal was done right.)

rx-7 obsessed

do you have a link to the propper way to do it on a turbo i have one for the non turbo but i cant seem to find one for the turbo

J-Rat

iTrader: (2)

Do yourself a favor... Check the easy stuff first.

1. Make sure you have NO vacuum leaks and that the intake system is intact from the AFM back...

phoenix7

http://www.cochran-racing.com/FSM/index.html

Forget all your religious teaching. THIS is your new bible.^^^^

FSM

If he hasn't done it yet then he needs a swift kick in the ***** for wasting his time and ours.

rx-7 obsessed

lol NNIIICCEEE also does the factory alarm prevent the car from starting??? because when i turn my key on i hear 6 very faint beeps.... bbeeeep beeeep beeeep beeeep beerrrrpppp like an alarm going off is there a way to remove it (any pics)

rx-7 obsessed

lik ei know when it goes off there is a starter cut relay but what im asking is if when u turn the car over and it starts can the anti theft system shut off the car

Force Fed

It does have gas in it right? Also there is a troubleshooting section in the FSM

+1 to the FSM.

rx-7 obsessed

it forshure is getting gas no doubt about that and it has spark i put the coils in another car to test them and they work the plugs and wires are brand new as well as the AFM and the ecu tested ok

phoenix7

so, if it has FUEL and SPARK you should be looking at VACCUUM LEAKS OR BAD COMPRESSION. Get to it already.

WrEcK-LeSs

Wait a mintue...I'm in the process of blocking off emmisions and I was under the impression that the car wont hold an idle on its own for about the first 5-10mins. He did say the rats nest is removed right?

It also sounds similar to an issue I was having with a bad afm. Is your afm level or at least somewhat level?