Infiniti I30/I35Similar to a Maxima, yet not really a Maxima. Discussion forum on Nissan's luxury model, the Infiniti I30/I35
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SES, TCS & SLIP lights - car sputters in cold weather
My 2000 I30 currently has the SES, TCS & SLIP lights all on, all the time. Took it to the stealership and they said it was the ignition coil. Replaced all 6 myself in 15 minutes, and it DID stop idling rough, but the lights never went away, nor did the "jerky" sputtering when I first start the car in cold weather. AND it did not pass the emissions test.
I tried unhooking the battery over night, it did not reset the lights. My mechanic tried to reset the codes with his machine, no dice there either (although he did pass the car even though it actually didn't pass emissions). I've also had to replace my MAF 2 years ago, and an ignition coil a year before that.
I could care less about the lights, but my TCS really is off and it will not pass emissions again. That I DO care about. Something is causing my ignition coils and MAF to fail, and I;d like to get to the source of the problem instead of replacing the MAF and coils every year. Anybody have an idea what the problem might be?
P0420 code is Bank 1 catalyst inefficient, there is a TSB on that one. Search the 5th Gen forum for lots of info.
P1320 is ignition signal, usually associated with the coil packs. However since you have already replaced them, you should look at other sources, such as the wiring and the crank & cam position sensors. You DO have NGK plugs in there, don't you?
The stumble at cold start is probably the upper intake gasket leaking. It will "cure" itself after the engine warms up, but will eventually need replacing to finally fix the issue.
And no, the catalytic converter is not the cause of the performance problem, but you will never pass emissions until the P0420 is resolved.
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Unless you do it exactly like I did, your results may vary.
Last edited by oldngivout; 07-16-2009 at 06:51 AM.
Ok searched the threads for the TSB on 0420, sounds like I def need a new catalytic converter. The guy at AutoZone showed me the part I needed, it looked like this:
You didn't search hard enough evidently. The Ebay cat is NOT the one for the P0420 code. Don't buy that one. The Bank 1 cat is in the y-pipe. The entire y-pipe must be changed out. I think it is a dealer only item, maybe not.
As for the spark plugs, NGK is the original Nissan brand used for optimum performance. Bosch double platinum, for instance, will run like crap in your car.
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Unless you do it exactly like I did, your results may vary.
Some cars have an oversensitive ecu software problem and there is a tsb for it, other times its caused by the cat itself, and then other times it's a faulty o2 sensor. To avoid people having very expensive bills, I just drill out some anti-foulers and put them on the rear o2's when I come across P0420's & p0430's on a 5th gen, it will work for all three possibility's and be cheaper than any one.
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P0420 code is Bank 1 catalyst inefficient, there is a TSB on that one. Search the 5th Gen forum for lots of info.
P1320 is ignition signal, usually associated with the coil packs. However since you have already replaced them, you should look at other sources, such as the wiring and the crank & cam position sensors. You DO have NGK plugs in there, don't you?
The stumble at cold start is probably the upper intake gasket leaking. It will "cure" itself after the engine warms up, but will eventually need replacing to finally fix the issue.
And no, the catalytic converter is not the cause of the performance problem, but you will never pass emissions until the P0420 is resolved.
I had a similar problem with my lights on my '02 i35. It actually ended up being the cam & crank sesnors that needed to be replaced. ~$500 for both @ the dealer.
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