desertdog

I have had my 87 (first rx-7) for about 1 year. Bought it after it sat in the same place for 4 years ...never moverd or started. Well I have tinkered and played around with it and just the last couple of weeks it was running fine! Last night I was cruising on I-10 about 80 mph and all of sudden I looked at the tac and it says "O" but all the rest of the car was fine ...lights radio, windows everything was fine but no motor, wouldn't crank nothing. I popped the clutch and nothing. Today we worked on it mostly diagnostic and we got the car to crank but no start. Fuel pump works fine, good voltage to the igniters, starter good, injectors ok, but no spark. We took a dinner break read some and went back armed with our homemade "complete tester" (www.teamfc3s.org/info/errorcodes/main/html) article "monitoring signals". Any ways we went back hooked up our tester and bamm!!! it started It made it about a block after setting at idle for 5-10 minutes. After a block just pettered ou, quit tryed to go again you know alittle surge then nothing ...just quit again. After 2 1/2 hours of more trying this, trying that, testing, jumping ...we towed it home. What do I do next?? Is it coils , ecm, any insight or experiences. I am not a mechanic and i don't know what to do next!

SureShot

So - did you get any error codes?

Maybe check for a loose AFM connector. You could have jiggled it when hooking up the test light.

desertdog

no error codes we got nothing from the ecm no signal at all that led me to believe thar nodule needs to be replaced i am going to look into that today which is my question would it be ok to use a "previouly used module" off another 87?

Kingofl337

you back to getting no spark? I would download the FSM and check out the CAS.

desertdog

we checked the crank akgle sensor with a volt ohm meter and it reads within spec i don't know what else to do it appears that the ecu is not telling the igniter to spark could that be???? i think i am going to then junk yard in a minute and get another ecu i read another thread which had a link on it that says any ecu off either an 86 or 87 na will work for my 87 na hope that is right anybody out there got any input...suggestion...advice??????????