Ok i started the car drove for 100ft shifted to second and the car died. The check engine light flashes and clicks and so does the ECU. No codes it just flashes really fast. Is the ECU dead? Anyway I can check it ? And if its dead can i use an ECU out of an non-SI civic (mine is an 89 si)?
Thanks guys.

 

wht kind of engine, ecu, etc. Maybe some one can help out.

 

Some more info would help. T-Mo's stuff and does the engine start and run or run with a low rev limit? OBD 0 or 1? any engine codes?

 

89 Si, stock D16A6, stock ECU.
This happened 30 min ago. I started the car went to first gear and as soon as i shifted to second it died and will not start again.
The CEL is blinking rapidly and the ecu keeps flashing. No codes it just flashes without ending

 

cranks over and over?
check injector wiring for loose or disconected plugs or blown fuses.

the cel shouldint blink at all if it's obd0. count the blinks on the ECU and get back to us.

 

it does crank over but doesnt start.
checked the injectors and plugs.
because the cel is flashing rapidly and ecu is just flashing with no codes, is making me think its either a short somewhere or the ecu is dead
but how can an ecu just die while driving?

 

try reseting the ecu. remove the HAZARAD and ECU fueses in main fuse box for 30 seconds.

 

already did both of those things.
still acting the same.

 

do u have a known good ecu to try?

 

thats the problem. i dont.
i was thinking about going to the junkyard tomorow but i know they dont have any si's. do you think i can use an ecu from a 4-door ?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by dan4g63 &raquo;</TD></TR><TR><TD CLASS="quote">thats the problem. i dont.
i was thinking about going to the junkyard tomorow but i know they dont have any si's. do you think i can use an ecu from a 4-door ?</TD></TR></TABLE>

it couldint hurt. I dont think theres a diffrence between a HB and a sedan ecu. make sure both are manuals.


Modified by JC18 at 9:05 PM 8/2/2004

 

ok ill try that. Thanks for the suggestions.

 

the ecu u use has to be from a civic Si or a Civic EX. the DPFI ecus will not work. i can send you a spare PM6 (ur ecu) to borrow if u pay shipping but i dont know if you wanna wait that long

 

um... count the flashes, yes it flashes fast but count anyways, if the ecu was dead it would be a constant red light not a flashing light.

 

i cant count the flashes because it just keeps on flashing with no pause

 

Found the problem. The ECU ground wire (the one on the thermostat) was loose.