05 g35 coupe ENGINE STALL while driving ...help!

Got questions about your Infiniti? We're here to help, and it's FREE!
User avatar
roofrecon.com
Posts: 100
Joined: Tue Jan 09, 2007 9:49 am
Car: g35s sedan 2007

Post

The dealer says they can't troubleshoot this because there are no codes and no hints and can't replicate the problem. It happens once a month while driving and putting my 6speed in neutral under no stress and coasting for about 5 seconds before going into next gear...rare I do this but good stick drivers use momentum to actually roll for a bit sometimes until changing gears. One time I was turning and slowing down and it totally cut off and all the dashboard lights came on ...lost all power steering. I have no idea what to do. I run an AEM cold air intake from the ground, cat back borla exhaust system..but I swear this was happening before all this...bad MAF? bad temp sensor? ...


Q45tech
Moderator
Posts: 14365
Joined: Tue Apr 30, 2002 3:19 am
Car: 1990 Q45 342,400 miles 22 years ownership with original engine
1995 G20t 5 speed 334,000 miles 16" 2002 wheels - 205/50/16 Sr20ve vvl

Post

Common on owner redesigned G35 intake cars................changes the turbulence in MAF sensor............when you sudden go to neutral the air flow is distrupted.

The MAF and integrated AT sensors are usually damaged because of your changes in filtration...............not enough to throw a code but enough to cause the temporay failure...........resets when you recrank.

Return to oem air filter and box should solve your self induced problem.

User avatar
roofrecon.com
Posts: 100
Joined: Tue Jan 09, 2007 9:49 am
Car: g35s sedan 2007

Post

as I stated in my note...this happened before added the AEM intake and it was professionally installed.

maxnix
Posts: 22628
Joined: Mon Jul 22, 2002 8:11 pm
Car: 1995 Infiniti Q45
1995 Infiniti Q45t
2000 Infiniti Q45

Post

Perhaps, but you are still going to have to at least return to OEM intake configuration to diagnose. Dealer has no obligation now that it is modified.

How about the "professional installer"?

User avatar
roofrecon.com
Posts: 100
Joined: Tue Jan 09, 2007 9:49 am
Car: g35s sedan 2007

Post

actually the dealer said he is obligated that's why he's keeping my car and he trurned over a 2007 g35 to me to drive for a week now. He said the intake and muffler system didn't void anything and if the car were to be in a crash infiniti would be liable for everything...especially since they now have it. Hopefully they will find something soon.

User avatar
Q451990
Moderator
Posts: 11473
Joined: Tue Jul 23, 2002 8:21 am
Car: 1990 Q45 - 118K, 2022 Toyota 4 Runner, 2004 Frontier M/T - 108K, 2012 Xterra (Mom's), 2023 Rogue (Inlaws)
Location: Columbia, SC
Contact:

Post

Sounds like you have a cooperative dealer! I hope they find it too. If they find the problem, please keep us posted...

Heath

Q45tech
Moderator
Posts: 14365
Joined: Tue Apr 30, 2002 3:19 am
Car: 1990 Q45 342,400 miles 22 years ownership with original engine
1995 G20t 5 speed 334,000 miles 16" 2002 wheels - 205/50/16 Sr20ve vvl

Post

All the other 3 - G35 sites discuss this happening just after installing a CAI or modification of the intake system on manual tranny vehicles when placed in neutral at speed.

Just like what happens when you use a cone fliter in close proximity to maf element the calibration changes because the air flow turbulence changes.

I have seen cases where a maf will read lower with a cone filter than oem the exact oposite from what you would expect..........however the leaner mixture [from the 0.1 volt lower signal] makes at bit more power on the dyno.

The screen filter on maf is designed to isolate the MAF somewhat but in a sudden shockwave from a TB closing it may distrupt the signals long enough for ecu to hiccup...............a combo problem from drive by wire TB and maf scan time......................a longer time constant [maf sample/change rate] could cure the problem.

As far as I have read everyone who reverted to oem air intake cured the problem!


User avatar
roofrecon.com
Posts: 100
Joined: Tue Jan 09, 2007 9:49 am
Car: g35s sedan 2007

Post

this was happening before the intake was added


Return to “Infiniti Online Mechanic”