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intheearlyhours · 07-14-2009, 12:29 PM

Ok i know you guys know my car and its problems by now but ill update whats going on now. Ok i got a 91 civic hatch with a jdm zc dohc in it. Im having backfiring problems and my ECU is reading code 9 (number 1 cyl posi) I double checked the timing 3 times and actually just re did it to be sure. If i take the spark plug wire out of the number 1 it doesnt backfire at all just makes the car slow and sound like a lawnmower lol. Ok i know the wiring it correct from the dizzy and all that. And that sensor that also reads from code 9, when i unplug it while the car is running it makes no difference in the way the car sounds or idols. I checked the sensor to see if it had any power running through it and it does so its doing something maybe. I need some better input than what you guys keep telling me (timing and wire order) them 2 are not the problem now for sure. Please help.

DESPAIN · 07-14-2009, 01:26 PM

Just because the sensor is getting power doesnt mean that it is no good. Swich it out with one that you know is good.

intheearlyhours · 07-14-2009, 01:29 PM

its a 100 dollar part.

DESPAIN · 07-14-2009, 05:38 PM

Get one off another car. One that you know works.

intheearlyhours · 07-14-2009, 05:54 PM

dont know anyone else with a civic. Thanks for your input though

GlassHeadlights · 07-14-2009, 06:17 PM

eBay. Craigslist.

intheearlyhours · 07-14-2009, 08:00 PM

im not buying a sensor that i dont even know if its bad. And this damn jdm engine has so many different parts to match on it iw ouldnt know what car to say its for.

07-14-2009, 12:29 PM	#1
intheearlyhours Member Join Date: Jun 2009 Age: 22 Posts: 59 iTrader: 0 / 0% Rep Power: 1	Jdm z/c troubles Ok i know you guys know my car and its problems by now but ill update whats going on now. Ok i got a 91 civic hatch with a jdm zc dohc in it. Im having backfiring problems and my ECU is reading code 9 (number 1 cyl posi) I double checked the timing 3 times and actually just re did it to be sure. If i take the spark plug wire out of the number 1 it doesnt backfire at all just makes the car slow and sound like a lawnmower lol. Ok i know the wiring it correct from the dizzy and all that. And that sensor that also reads from code 9, when i unplug it while the car is running it makes no difference in the way the car sounds or idols. I checked the sensor to see if it had any power running through it and it does so its doing something maybe. I need some better input than what you guys keep telling me (timing and wire order) them 2 are not the problem now for sure. Please help.

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07-14-2009, 01:29 PM	#3
intheearlyhours Member Join Date: Jun 2009 Age: 22 Posts: 59 iTrader: 0 / 0% Rep Power: 1	its a 100 dollar part.

07-14-2009, 05:54 PM	#5
intheearlyhours Member Join Date: Jun 2009 Age: 22 Posts: 59 iTrader: 0 / 0% Rep Power: 1	dont know anyone else with a civic. Thanks for your input though

07-14-2009, 08:00 PM	#7
intheearlyhours Member Join Date: Jun 2009 Age: 22 Posts: 59 iTrader: 0 / 0% Rep Power: 1	im not buying a sensor that i dont even know if its bad. And this damn jdm engine has so many different parts to match on it iw ouldnt know what car to say its for.

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Jdm z/c troubles