Hey guys i have a 1991 civic DX hatch, trying to find a hookup for a snap-on scanner, i have a low idle problem and hte car only has 115,000km on it so i was trying to see if any codes popped up. so, i know the car is pre- OBDII so, where the connection for the scanner??

 

???

 

i thought 91 were obd0.

 

Stock 91's are OBD0

 

lol, there are no ports for a scanner. Scanners are only for odbII. You have to pull back the passenger carpet and look at the metal plate on the floor. There will be a hole in the middle of it, with the corresponding light flashes for the code you are throwing through it. You may have to jump the connector by the dizzy with a wire the get the code to flash. Then reference the code by the ECU Code list in the FAQ section of this forum.

 

^^ that is correct. never had to jump a wire just turn the key to the acc. position and count the flashes.

 

^^Bingo^^

Long flash = 10
short flash = 1

flash, flash, falsh = code 3

flaaaaaaaaaaash, flash, flash = code 12

 

alright thats what i was thinking, i got to that after i posted lol. i found my manual with all the codes so i shall see if anything is up tomorrow.

 

you can adjust your idle im not sure if theres a screw on your intake like a 97 civic which i know there is, also im not sure if the distrubutor adjust how high your car idles but it changes your idle if you unscrew it and move it