Hi guys, I have my 04 maxima 6 speed with only 99,000 miles. Its getting a p0300 code, the car bogs for 10 sec than idles fine for 2 min. than it bogs again for 10 sec than idles fine for 2 min. I driver this car everyday, it has full power and everything is perfect, it just bogs a lot. Changed all coils, all plugs, maf sensor, cam sensor, crank sensor, timing chain tensioner, converter, ypipe and catback. Please help if you can thanks

 

Check the throttle unit. It houses the IACV and TPS, which can cause the P0300 code. Sounds like you've covered every other base though. I have gone through the same headache with my 02 6-Speed. Mine ended up being clogged precats, but you say you've already replaced those. I hope that can help point you in the right direction at least.

 

Hi and thank you for your response. I only changed bank 1 pre cat which is the rear one. Do you think it's the front pre cat. thanks

 

It's possible, but it would behoove you to test and therefore be sure first. If you have a vacuum gauge, let me know and I'll run you through a very simple test procedure to see if there's a clog or not.