knock sensor

[emu103]

So ive been having some problems with my redtop sr.

At first i thought my walbro was going out so i swith in a stock pump wih better runing condiion.

My problem is this:
13 mpg (o2 sensor is fine)

Sometimes from say a stoplight i have a realy hard time getting up to speed and the more gas i give the worst it bogs down. The bogging is very severe, bt is not a constant problem. Very intermittent. Ill usually try to get it home or pull over and chill 10 mins and it clears up.

My car is running very rich

feels relatively the same as the stock ka that was in as far as power

I was honestly going to say timing is off, but it was withn spec last time i checked.

Does this sound like i need knock sensor. Im at work, havent pulled codes yet but it just crossed my mind.

Ive alreay changed mafs, pulled my fuel rail to see if it was leaking etc.

[emu103]

Gotta love these answers

[emu103]

unplugged it and went for a drive, the bogging happened immediately. just as it does sometimes when it acts up.

pulled over plugged it in and it went back to its drivable condition, until it decides to act up again i suppose

im thinking the wires in the subharness are in poor condition, im going to pull it off and try to repair it

[emu103]

thanks to all those who helped! lol

for those who may search on this topic, here is how i would troubleshoot

it is the knock sensor or subharness

i jammed a 1 megohm resistor into the efi side female connectors, problem went away with the quickness. that lets me know the wire from that connector to the ecu is fine and working.

pulled over snatched the resitor out, bogging came back

since my problem is not constant, but intermittent i suspect the sub-harness, and not the sensor which i will be repairing tonight.

tags ;
sr20det bogging
timing retard
knock sensor
poor mpg
no power

[conrad_s13.5]

^ your awesome for doing this with the lack of answers!

help me!

:thumbsup: