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View Full Version : 91 civic si.. . trouble shooting need civic guru's


dutchmastazero
Sep 8, 2008, 06:57 AM
OK, the name is chad...
I own a 91 civic si... it mpfi...
I swapped it with a obd1 b16... it runs fine...
I converted it to obd1 and I'm having sum issuse's.. (jumper harness,ecu,distributor)
I get two codes
Code 43 fuel supply system.. . how can I fix all the fuel parts are fine... I think
Code 9 cylinder one/distributor,. I bought a barnd new one and it still is there...

So the problem I'm having is when I turn the car on it runs fine... but when the check engine turns on(around the time it warms up) it hesitates between 1,000 rpm and 4,000 rpm...
Like I press the gas and it doesn't accelerate bogs and makes noises until 4,000 rpm and then it fells like it opens up and drives fine and still cracks vtec and everything...
What could be the problem? sombody said it was the distributor.. but I bought a new one...
I really need this fixed and thanks to anyone that helps... :D

dutchmastazero
Sep 8, 2008, 12:14 PM
? No body