350Z Smog help - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

s13_gearhead · 06-30-2015, 01:25 PM

Hi guys,

I've got a 2008 350z that won't pass smog. Both the dealership and a local private Nissan mechanic have reset the computer and run the car through the proper drive cycles, but the Catalyst sensors won't report that they're ready for a test. Not enough information. I've put several hundred miles on it after a fresh reset, and no luck. No pending DTCs. Passes emissions just fine. I'm in Northern California, wondering if anyone knows where I could take the car for some smog assistance. BAR has been about as helpful as a mouthful of saw dust. TIA for any help.

-Coop

skitso1080 · 07-04-2015, 07:51 AM

Is your ecu modded?

s13_gearhead · 07-05-2015, 09:34 PM

Hey, sorry for delay. No, ECU is stock, as far as I know.

We found the problem. There was a crack in the driver's side exhaust manifold and it was allowing just enough unmetered air to get to the o2 sensor that it was constantly reporting an unready status. Major PITA.

Thanks for replying!

sildrift86 · 10-07-2015, 04:22 PM

If you guys ever need smog assistance,
I know some friends that will pass any car in any condition (even ones that have failed).
They've been hooking it up for years! (all over cali)

Just need your car's information, current mileage, cash, and it gets done. No questions asked (you don't even need to bring your car).

They usually charge around $260-$300 though.

I'll hook you guys up, e-mail me at: [email protected]

06-30-2015, 01:25 PM	#1
s13_gearhead Zilvia Member Join Date: May 2005 Location: Santa Rosa, CA Age: 38 Posts: 216 Trader Rating: (0) Feedback Score: 0 reviews	350Z Smog help Hi guys, I've got a 2008 350z that won't pass smog. Both the dealership and a local private Nissan mechanic have reset the computer and run the car through the proper drive cycles, but the Catalyst sensors won't report that they're ready for a test. Not enough information. I've put several hundred miles on it after a fresh reset, and no luck. No pending DTCs. Passes emissions just fine. I'm in Northern California, wondering if anyone knows where I could take the car for some smog assistance. BAR has been about as helpful as a mouthful of saw dust. TIA for any help. -Coop

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07-04-2015, 07:51 AM	#2
skitso1080 Join Date: Jun 2015 Location: Southern California1 Posts: 4 Trader Rating: (0) Feedback Score: 0 reviews	Is your ecu modded?

07-05-2015, 09:34 PM	#3
s13_gearhead Zilvia Member Join Date: May 2005 Location: Santa Rosa, CA Age: 38 Posts: 216 Trader Rating: (0) Feedback Score: 0 reviews	Hey, sorry for delay. No, ECU is stock, as far as I know. We found the problem. There was a crack in the driver's side exhaust manifold and it was allowing just enough unmetered air to get to the o2 sensor that it was constantly reporting an unready status. Major PITA. Thanks for replying!

10-07-2015, 04:22 PM	#4
sildrift86 Zilvia Member Join Date: Jul 2007 Location: Los Angeles Age: 35 Posts: 195 Trader Rating: (8) Feedback Score: 8 reviews	If you guys ever need smog assistance, I know some friends that will pass any car in any condition (even ones that have failed). They've been hooking it up for years! (all over cali) Just need your car's information, current mileage, cash, and it gets done. No questions asked (you don't even need to bring your car). They usually charge around $260-$300 though. I'll hook you guys up, e-mail me at: [email protected]