1991 CRX si., i pull out carpet from the passenger side, look at the window for LED.Turn onn egnition ,LED makes a quick blink and that it , wait for 10 minutes or whatever i do, dont see anther blink.
check engine lights up when car gets warm, and recently the car is not running ok.
what did i not do.?
sincerely

 

pull the hazard fuse "10, closet to the outside" from the fuse box in the bay, then drive and see if the CEL comes on again. Then if so pull over, turn off car, turn on ignition and count the blinks. Also your ECu may be bad...gl

 

One short blink would be Code 1 - Oxygen Sensor.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tech8 &raquo;</TD></TR><TR><TD CLASS="quote">One short blink would be Code 1 - Oxygen Sensor.</TD></TR></TABLE> yes but read his post he gets one blink in ten minutes, probably something else; because the ECU will blink the code then stop for approximately 2 seconds then blink it or another code...it seems like his post says something else is wrong

 

it might be your oxygen sensor. it happpened to me that after like 10 mins of runnign the car the check engine would turn on and it would run like ****. the only difference is that with me i would get a code in the ecu.