Problem with the electronics and limp mode? on track

ZBW39 · 08-02-2010, 02:41 PM

I was on track this Friday and two things happened that I'm not sure what's causing it.

1. Oil temp was at about 240-250, I'm sure it's no where near 260. After exiting a corner, I saw the slip light flashes couple times, then suddenly the engine rev got cut down to 5000rpm for a good 2-3 seconds. After pumping the gas couple times it started to rev up again. Is the VDC causing this?

2. Laps later, at the same corner exit, the car behaves as if i let go of the gas pedal completely and starts lowering RPM, 6k, 5k, 4k, 3k, then to 2k!? The car is not responding even when I pump the gas couple times. So I drove off the track on to the dirt. Turn off the engine, start it back on. Then everything returns to normal.

Anybody have any inputs to the two issues I had above? Thanks.

pgrmstr · 08-02-2010, 02:52 PM

right hand turn? less than 3/4 tank of gas?

Fuel Starvation perhaps...

ZBW39 · 08-02-2010, 11:24 PM

You are right, less than 3/4 tank, but definately more than 1/2 tank full. And yes right hand turn.

Is this really the cause!? 3/4 tank is 75% ! I have to keep tank that full at all times on track? wow... Thanks for the info.

Quote:

Originally Posted by pgrmstr

right hand turn? less than 3/4 tank of gas?

Fuel Starvation perhaps...

Mike · 08-02-2010, 08:41 PM

thats my guess too. need to have a full tank to track this car.

Zxces50 · 08-02-2010, 08:44 PM

I vote Fuel Starvation- similar thing happened to me - lost RPM but didn't make it off the track- 1 dot below half- disconnected battery - started after that like nothing happened- future will do two sessions then refill

Red370 · 08-03-2010, 01:31 AM

time for a swirl pot yes?

AK370Z · 08-03-2010, 01:34 AM

Quote:

Originally Posted by ZBW39

I was on track this Friday and two things happened that I'm not sure what's causing it.

1. Oil temp was at about 240-250, I'm sure it's no where near 260. After exiting a corner, I saw the slip light flashes couple times, then suddenly the engine rev got cut down to 5000rpm for a good 2-3 seconds. After pumping the gas couple times it started to rev up again. Is the VDC causing this?

2. Laps later, at the same corner exit, the car behaves as if i let go of the gas pedal completely and starts lowering RPM, 6k, 5k, 4k, 3k, then to 2k!? The car is not responding even when I pump the gas couple times. So I drove off the track on to the dirt. Turn off the engine, start it back on. Then everything returns to normal.

Anybody have any inputs to the two issues I had above? Thanks.

I'm not a track junkie, but I have read enough fuel starvation threads. I'm voting for fuel starvation too.

Also, the limp mode doesn't kick in till 280F (or 290F I can't recall). 240-250F is totally normal.

cossie1600 · 08-28-2010, 07:01 PM

It's fuel starvation. This POS will fuel starve after burning only 5-6 gallons!!! WTF!

Juruki · 09-04-2010, 12:02 PM

I hit some pretty long right turns (freeway on ramps) with less than 1/2 tank and never had a problem?

cossie1600 · 09-04-2010, 03:27 PM

Are you really comparing street driving to track driving? I highly doubt you can pull .8+g's through the turns for over 5 sec +. If you are, you might want to consider the consequences.

08-02-2010, 02:41 PM	#1 (permalink)
ZBW39 Base Member Join Date: Apr 2010 Location: San Francisco Posts: 30 Drives: 370Z White M6 Rep Power: 15	Problem with the electronics and limp mode? on track I was on track this Friday and two things happened that I'm not sure what's causing it. 1. Oil temp was at about 240-250, I'm sure it's no where near 260. After exiting a corner, I saw the slip light flashes couple times, then suddenly the engine rev got cut down to 5000rpm for a good 2-3 seconds. After pumping the gas couple times it started to rev up again. Is the VDC causing this? 2. Laps later, at the same corner exit, the car behaves as if i let go of the gas pedal completely and starts lowering RPM, 6k, 5k, 4k, 3k, then to 2k!? The car is not responding even when I pump the gas couple times. So I drove off the track on to the dirt. Turn off the engine, start it back on. Then everything returns to normal. Anybody have any inputs to the two issues I had above? Thanks.

08-02-2010, 08:41 PM	#4 (permalink)
Mike The370Z.com Sponsor Join Date: Jun 2009 Location: Loganville, GA Posts: 5,944 Drives: 370z Rep Power: 2186	thats my guess too. need to have a full tank to track this car. __________________ NISSAN: 75 280Z / 86 300ZX GLL /87 Sentra SE / 03 350Z / 23 Z Porsche: 93 968 / 23 Macan GTS / 93 968

08-03-2010, 01:31 AM	#6 (permalink)
Red370 A True Z Fanatic Join Date: Jul 2009 Location: Kaiserslautern, Germany Posts: 4,391 Drives: your mom to church Rep Power: 295	time for a swirl pot yes? __________________ 2011 Mustang 5.0 \| 3.55's \| Lethal Performance off road H-Pipe \| Magnaflow Muffler Delete \| JLT CAI/Bama tuned 417whp/ 404 ft/lbs

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08-02-2010, 02:52 PM	#2 (permalink)
pgrmstr Base Member Join Date: Mar 2009 Location: PA Posts: 131 Drives: 09 BS 370z Sport 6MT Rep Power: 16	right hand turn? less than 3/4 tank of gas? Fuel Starvation perhaps...

08-02-2010, 08:44 PM	#5 (permalink)
Zxces50 Base Member Join Date: Jan 2009 Location: Boston, MA Posts: 208 Drives: 15 C7 Stingray Z51 Rep Power: 16	I vote Fuel Starvation- similar thing happened to me - lost RPM but didn't make it off the track- 1 dot below half- disconnected battery - started after that like nothing happened- future will do two sessions then refill

08-28-2010, 07:01 PM	#8 (permalink)
cossie1600 A True Z Fanatic Join Date: Jun 2009 Location: californee way Posts: 5,380 Drives: 370, Leaf Rep Power: 29	It's fuel starvation. This POS will fuel starve after burning only 5-6 gallons!!! WTF!

09-04-2010, 12:02 PM	#9 (permalink)
Juruki Track Member Join Date: Mar 2010 Location: SoCal Posts: 965 Drives: 370Z Tour/Sport/Navi Rep Power: 16	I hit some pretty long right turns (freeway on ramps) with less than 1/2 tank and never had a problem?

09-04-2010, 03:27 PM	#10 (permalink)
cossie1600 A True Z Fanatic Join Date: Jun 2009 Location: californee way Posts: 5,380 Drives: 370, Leaf Rep Power: 29	Are you really comparing street driving to track driving? I highly doubt you can pull .8+g's through the turns for over 5 sec +. If you are, you might want to consider the consequences.