Hi everyone i have a 2000 civic sir and last week i installed a new timing belt, water pump, plugs, cap, rotor, and fuel filter. Two days later my cel came on and i noticed a slight vibration at idle almost like a missfire. The car runs fine otherwise, no change in mileage or power. The car is stock besides an aem cold air and a test pipe.

Any ideas what it could be?

Thanks Greg

 

Check again, i didnt see a 76 on the code list. I seen a 67, that could be caused by that test pipe possibly.

 

crazy enough its telling me...its a misfire in cylinder 6..Which is imposible

I double checked the codes and its for sure code 76..Ill take a video if you guys dont believe me lol

Also the cel came on before the test pipe was installed. I double checked my timing last night and its dead on.

Could it be a faulty ignitor? or a bad coil? or even an 02 sensor?

heres a website with the code listings http://wiki.answers.com/Q/How_...ccord

 

Is the ECU stock? If so, it may be bad.

 

Yes the car has a stock ecu..I just finished doing a compression test, and the numbers came out 200/204/206/206.

I dont know what else it could be?? the car ran fine before doing the timing belt, and now this

 

Double check that the crank and cam are perfectly synchronized at TDC.

 

do you have an o2 sensor simulator for your 2nd o2 sensor???? if not then it will know that there is no cat, hence code 67.

 

No i dont...i just installed the test pipe on the weekend. Didnt know one was needed?

Before i set the timing it was also throwing code 54 crankshaft sensor, but after setting the timing at factory specs it went away...now its only throwing code 76, which is cylinder misfire in cylinder 6

 

since your car is a 2000, that makes it OBD2 making the codes a 5 digit code instead of a 2 digit code.

 

When doing the test it comes up as long dashes, and short dashes, so i dont see how it could come up with three digits???

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 95sloweg &raquo;</TD></TR><TR><TD CLASS="quote"> since your car is a 2000, that makes it OBD2 making the codes a 5 digit code instead of a 2 digit code.</TD></TR></TABLE>...dude if he is watching the blinks it will be the same. a diagnostics tool will yield the 5 digit code.

i am positive it is because of the test pipe. you dont have a 6th cylinder. long blinks are 10s short blinks are 1s... or perhaps its a combination of 2 codes?

the only thing i know for certain is that if you are running a test pipe and you have a secondary o2 sensor you will throw the catalytic converter code. that is pretty much the job of the secondary o2 sensor, to let you know when the cat is finished.

 

Thanks alot! so do i need an 02 simulator then?? where's a good place to buy one?


Thanks Greg

 

um... i am not too sure if you can buy one, i think its mostly a diy thing. i would just put a catalytic converter in. the high flowing cats are almost the same performance wise as a test pipe, quieter, and its legal here in the states. i dont know what canada's laws and inspection time frames are...

if you are bent on keeping the test pipe, i bet you could search for something along the lines of a secondary o2 simulator and find something useful.