ok a while ago i saw a diagram on the forums some where of what signals should be coming back to the ecu so that you could back probe the plug and see if your signals coincide with what it should be. i have been looking for this again ever since my car has not been running to hopefully help me diagnose and havent been able to find it. if you know what im talkin about or have it i would appriciate the help.

My car is a 1988 Gxl
thank you -dan

 

Look at the thread towards the top of this forum entitled Sticky: Frequently Asked Questons. Toggle down the page of that thread and find the link for S4 86-88 RX7 factory service manuals (FSM) . When you bring up ( download) the FSM check in the emissions(ECU) section I believe and you should find the list there.

 

ok i found all the values in the FSM, (thank you satch) but i also noticed that it said to warm the engine up to operating temperature and then turn it off and back to run, and start checking. But i have a really hard time getting my engine to run long enough to come up to operating temp if it is possible at all, because my engine runs like poop.

does anyone know whether these voltages would be usefull at all if taken on a COLD engine with it on run?