rizohalim

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

dfj240

iTrader: (1)

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.

rizohalim

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

dfj240

iTrader: (1)

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.