I have a p1320 problem on my 97 Infiniti i30

[tyquan23]

I have changed spark plugs and coils and the car is still misfireing can somebody help me.

[tigersharkdude]

where did you buy the coils? What brand? also, what plugs did you use?

[tyquan23]

Well i didnt buy brand new coils i went to a junk yard and dem out the same car as mine..maybe i was thinkn i need to buy them brand new..and my spark plugs are ngk

[tigersharkdude]

well you could have a bad coil, hence why you are getting a p1320 code. I recommend getting a known working front and rear coil (oem or bust)

swap one coil at a time, cut the CEL off and see if it comes back on. Do this for each cylinder. But i think you have an underlying problem, I have had the code twice, and the car has never failed to start.

[tyquan23]

Do i need to have the car running when im swapping the coils?

[tigersharkdude]

no. But you do need to have a code reader than can cut a CEL off at your disposal

step 1) clear the code (DO NOT CUT THE CAR AFTER CLEARING)
2) Swap working coil in to cylinder 1
3) cut the car on, drive around and see if the CEL comes back on
4) If code comes back, turn the CEL off, swap old coil back to cylinder one, swap good coil to cylinder 2. Repeat this process until you find the bad coil


But like I said, one coil being bad is not keeping you car from starting, you have an underlying problem. When you go to crank the car, turn the headlights on before attempting to crank. Do your headlights and interior lights die?

[tyquan23]

Thanks ima try dat procedure and c how it goes..and no my headlights and interior lights dosent die. Y would dey die?

[tigersharkdude]

you have an underlying problem, and Im trying to figure out what that problem is. If the lights died when you cranked it that would point at your battery. Youve got fuel (said you tested everything, I assume you have air, and you need spark to start. You just need to start looking at things that deal with the ignition system. Im pretty sure there is a relay that controls the coils, you could try a new relay. Its hard to pin point stuff if its not in front of you

[tyquan23]

yea you right cuz this problem been going on for a while..but i had it tested at a shop and they said i needed coils aprk plugs and a condensor..and i changed everything but the condensor you think you might know where that is?

[tigersharkdude]

a condenser? your A/C isnt causing this

[tyquan23]

that what i said i just think they was tryn to get some money out me but it didnt work..