I was givin this car due to it being flooded (fresh water) to over the door handles. No water in crank case. I have de-watered the motor and whole car, good compression, clean gas, clean oil, but I need to open up ECU to see if there is still water/sediment in it. I have been searching for a location/location pic for 2 days w/no luck. Time is of the essence, please help!

 

2 days? It took me 2 minutes.

https://www.rx7club.com/1st-gen-non-...ocated-999101/

Welcome to the club and good luck saving the FB

 

I searched youtube, google, here, fsm (even AutoZ) for location using PCM, ECM, ECU, Controller, Computer... with no clear pic. I DID NOT post without searching. Frustration led me to post question I forgot about the big solid panel over it (had another '85 13b about 15 yrs ago) I have pulled it out, inside was still WET wet. Washed in distilled water to remove sediment, drying now. Blue resistors look good. Had great spark, and new gas but was fuel flooding plugs every time I cranked eng like both the injectors were full wide open/no pulses. A soaked ECU may have done that lol! Yes did the De-Flood procedure with connector behind seat a dozen or two times but reflooded whenever i reconnected AND cranked I thank you for the info. P.s. I may be getting another 12a RX soon for labor from another gent too

 

This is news to me! What connector are you referring to? The plug to the fuel pump under the bin? To do the de-flood procedure properly, I would pull your plugs and dry them, pull the EGI fuse (driver's side strut tower) pull the blue spade connector at the coils and turn the engine over. Once all the fuel is out put everything back together and try again. Keep doing this until it starts. Keep open the possibility that something else is wrong. Check your AFM and see if it is working properly. Good luck.

 

actually if its flooded, but has spark, i like to disconnect the fuel pump, either from the fuel pump connector under the bin, or the fuel pump relay. and then just crank it, at some point it will start and run for a bit. if everything is ok, usually you can just plug the fuel pump back in and it will run. ymmv!

 

To de-flood I disconnected 2 wire harness off fuel pump under the bin behind drivers seat, Removed, cleaned and dried spark plugs, removed coil wires from dist cap and grounded (to prevent spark in fuel mist envi...) l, cranked until fuel mist subsided. I removed ECU yesterday and disassembled. It was soaked with water inside. Washed with distilled water and dried. Compressed air all the connectors in passenger foot ECU area. Installed back in car and POW fired up and ran it till everything was totally warmed up! I could not hear the injectors cycling before but do now. The wet ECU was holding them full open causing the flooding. Anyways ITS FIXED yay! Now onto all the small issues, tune up, trans and diff maint...