Nissan 370Z Forum  

Traction Control, Sticky gas pedal, Ice mode???

Originally Posted by Kirkster Fricking fly by wire BS... I <3 throttle cables.

Go Back   Nissan 370Z Forum > Nissan 370Z Tech Area > Engine & Drivetrain


Reply
 
LinkBack Thread Tools Display Modes
Old 07-22-2010, 02:05 PM   #46 (permalink)
A True Z Fanatic
 
m4a1mustang's Avatar
 
Join Date: Feb 2009
Location: Northern VA
Posts: 55,385
Drives: on two wheels
Rep Power: 6962
m4a1mustang has a reputation beyond reputem4a1mustang has a reputation beyond reputem4a1mustang has a reputation beyond reputem4a1mustang has a reputation beyond reputem4a1mustang has a reputation beyond reputem4a1mustang has a reputation beyond reputem4a1mustang has a reputation beyond reputem4a1mustang has a reputation beyond reputem4a1mustang has a reputation beyond reputem4a1mustang has a reputation beyond reputem4a1mustang has a reputation beyond repute
Default

Quote:
Originally Posted by Kirkster View Post
Fricking fly by wire BS...
I <3 throttle cables.
__________________
- Steve
MAZOC Meet Thread
Zs & Coffee - Saturdays at 10AM in Fairfax, VA and Columbia, MD (Click the banner!)
LIKE us on Facebook!
m4a1mustang is offline   Reply With Quote
Old 07-22-2010, 02:06 PM   #47 (permalink)
6MT
A True Z Fanatic
 
6MT's Avatar
 
Join Date: May 2009
Location: ITU Zone 2
Posts: 22,459
Drives: Reliant Robin
Rep Power: 1790
6MT has a reputation beyond repute6MT has a reputation beyond repute6MT has a reputation beyond repute6MT has a reputation beyond repute6MT has a reputation beyond repute6MT has a reputation beyond repute6MT has a reputation beyond repute6MT has a reputation beyond repute6MT has a reputation beyond repute6MT has a reputation beyond repute6MT has a reputation beyond repute
Default

Quote:
Originally Posted by shoopajae10 View Post
i only expereience this when my engine is cold and at start up. the rpm rises and stays around 2k but thats expected. sometimes when i start it up and dont let it warm up and put it in gear and slowly let go of the clutch, the RPM rises and accelerates the car on its own for about 5 secs or so.

normal right?!?!
Yes, normal. The "planer" oxygen sensor hasn't heated up and the ecu is keeping the rev's up like that until it gets a proper voltage signal from the oxygen sensors.

You probably also notice that this does not last too long. BTW, I wouldn't "reset" the car. This behavior is normal.
__________________
Andrew

2009 370Z Sport/Touring 6MT sold
2013 Honda Civic Si coupe D/D
6MT is offline   Reply With Quote
Old 08-28-2010, 12:27 AM   #48 (permalink)
Base Member
 
Join Date: Aug 2010
Location: Atlanta
Posts: 203
Drives: 150cc Scooter
Rep Power: 15
Unclemeaty is on a distinguished road
Default

Tonight was awsome for the most part - that is until I was 1/2 a mile from my house. I met a bunch of car-nuts at my local StarBucks. Met, talked, cars, and fun -> then the trouble started on my way home.

Tonight I've been able to replicate this same problem everyone is experiencing in this thread. I have SRM but the problem was happening with sport mode both on and off. Once I thought my car was pulling itself I imidiately put the car in neutral and was able to safely get to a side parking lot.

From there, I was able to replicate the problem, reving in Neutral - Over and over again. I lightly press the throttle to 2500 rpm, and then gently release. The RPM stayed hovering almost every time between 1500 and 2500. One time I slowly reved the engine to 4000, and it settled back to 3000 where it just stayed happily there. It was pretty bad, enough for me to get out of the car and listen to the engine rev hold at 3000.

I got back in the car knowing theres a 'toyota' problem here, and tried to see what was the culprit. I found very quickly that pulling on the gas pedal with my hand would quickly let the engine back down to idle. So, idle up with slow pres sof the pedal; and the engine RPMs tended to hold with me off the throttle - then pull on the pedal with my hand and the engine drops back down to ~600 rpm. Wierd indeed. I could even repeat the entire problem with just one hand. I think the pedal is too tight where and there is not enough gap between rest at idle and very slight throttle.

I want to think the problem happens more when the car is realy hot; in fact the pedal area in general felt very toasty during my testing from the general engine heat.

I've only owned this car for 2 weeks as I bought it slightly used; but I've got a bad sinking feeling about this - to the point where if they cannot fix then it falls under my 30 day return policy. Tomorrow I plan to drive it a bit around to see if the problem returns, and then promptly take it in. I hope I can get it to rev and stay rev'd in the service line. I hope they can fix this stupid but important safety problem. I'll try not to leave the dealership empty handed.

2009 370z with 24,500 miles

Last edited by Unclemeaty; 08-28-2010 at 12:32 AM.
Unclemeaty is offline   Reply With Quote
Old 08-28-2010, 10:37 AM   #49 (permalink)
Base Member
 
Join Date: Aug 2010
Location: Atlanta
Posts: 203
Drives: 150cc Scooter
Rep Power: 15
Unclemeaty is on a distinguished road
Default

Update: Just got back from the dealership. I was able to replicate the pedal and engine rev problem as I described above. The dealer offered me a loaner car pronto after I said it looks like the car has Toyota syndrome. I literally got the car to stay at 3000 RPMs without touching the pedal in front of 2 service-intake personel. My z should be ready Monday due to customer backlog; unfortunately I'll be out of town until Thursday and will not be able to test anything fixed until then.

I'll update this thread with my/their findings when I hear about them.
Unclemeaty is offline   Reply With Quote
Old 08-28-2010, 12:14 PM   #50 (permalink)
Base Member
 
Join Date: Jul 2010
Location: Oregon
Posts: 5
Drives: 09 370Z 6MT
Rep Power: 15
slakr007 is on a distinguished road
Default

unclemeaty,

At least the dealership cared enough to help.

I have been talking with Nissan proper. Their regional "troubleshooter" guy had my dealership install a data recorder in my car last week since the problem is so erratic. It is supposed to start recording everything the computer knows about the car whenever the engine hits 5,500 RPM.

So, now it is just a waiting game for me.

Interestingly enough, this started as my engine revving unabated until I pulled on the gas pedal. The day the dealership installed the data recorder, it was doing exactly what DannyGT described...holding an RPM and continuing to pull the car when you let off the gas. If I pushed the clutch in, the engine would peg at 2,000 RPM.

After the hell Toyota went through because of a bunch of stupid drivers, you would think Nissan would be replacing things left and right in my car after the service manager and a technician witnessed the problem first-hand...the technician witnessed it while driving my car.

I guess they have faith that I know to push the clutch in or turn the car off instead of calling 911 and killing my family. Still, I'm quite annoyed by their generally anemic response to this.
slakr007 is offline   Reply With Quote
Old 08-29-2010, 05:18 PM   #51 (permalink)
A True Z Fanatic
 
spearfish25's Avatar
 
Join Date: Mar 2009
Location: Naples, FL
Posts: 4,117
Drives: to work
Rep Power: 1856
spearfish25 has a reputation beyond reputespearfish25 has a reputation beyond reputespearfish25 has a reputation beyond reputespearfish25 has a reputation beyond reputespearfish25 has a reputation beyond reputespearfish25 has a reputation beyond reputespearfish25 has a reputation beyond reputespearfish25 has a reputation beyond reputespearfish25 has a reputation beyond reputespearfish25 has a reputation beyond reputespearfish25 has a reputation beyond repute
Send a message via AIM to spearfish25
Default

Quote:
Originally Posted by slakr007 View Post
I'm quite annoyed by their generally anemic response to this.
Call your local paper and tell them you have a big story. Then let them film the car revving. Nissan wouldn't like that too much.
__________________
2013 Cadillac V-Wagon, RIP Z
spearfish25 is offline   Reply With Quote
Old 09-01-2010, 08:58 PM   #52 (permalink)
Base Member
 
Join Date: Aug 2010
Location: Atlanta
Posts: 203
Drives: 150cc Scooter
Rep Power: 15
Unclemeaty is on a distinguished road
Default

Im picking up me z on Friday, but I already have the dealerships response. They are replacing the accelerator sensor and pedal; likely one in the same. Ill know this weekend if the problem is hopefully gone. The parts are on backorder and I am also out of town.
Unclemeaty is offline   Reply With Quote
Old 09-01-2010, 09:37 PM   #53 (permalink)
A True Z Fanatic
 
cossie1600's Avatar
 
Join Date: Jun 2009
Location: californee way
Posts: 5,380
Drives: 370, Leaf
Rep Power: 30
cossie1600 has a reputation beyond reputecossie1600 has a reputation beyond reputecossie1600 has a reputation beyond reputecossie1600 has a reputation beyond reputecossie1600 has a reputation beyond reputecossie1600 has a reputation beyond reputecossie1600 has a reputation beyond reputecossie1600 has a reputation beyond reputecossie1600 has a reputation beyond reputecossie1600 has a reputation beyond reputecossie1600 has a reputation beyond repute
Default

It sounds like part of the cold start system where the car would hold the revs higher
cossie1600 is offline   Reply With Quote
Old 09-03-2010, 05:05 PM   #54 (permalink)
Base Member
 
Join Date: Jul 2010
Location: Oregon
Posts: 5
Drives: 09 370Z 6MT
Rep Power: 15
slakr007 is on a distinguished road
Default

Quote:
Originally Posted by Unclemeaty View Post
Im picking up me z on Friday, but I already have the dealerships response. They are replacing the accelerator sensor and pedal; likely one in the same. Ill know this weekend if the problem is hopefully gone. The parts are on backorder and I am also out of town.
Awesome. Do you mind sharing the name/location of the dealership? Maybe I can have Nissan contact them, see if they know something Nissan does not, and get things moving with my car.
slakr007 is offline   Reply With Quote
Old 09-03-2010, 05:06 PM   #55 (permalink)
Base Member
 
Join Date: Jul 2010
Location: Oregon
Posts: 5
Drives: 09 370Z 6MT
Rep Power: 15
slakr007 is on a distinguished road
Default

Quote:
Originally Posted by spearfish25 View Post
Call your local paper and tell them you have a big story. Then let them film the car revving. Nissan wouldn't like that too much.
If I could reproduce the problem at will, I would. Seriously. Problem is, the car is driving like a dream right now and it could be three months from now or tomorrow before the problem occurs again.
slakr007 is offline   Reply With Quote
Old 09-03-2010, 09:50 PM   #56 (permalink)
Base Member
 
Join Date: Aug 2010
Location: Atlanta
Posts: 203
Drives: 150cc Scooter
Rep Power: 15
Unclemeaty is on a distinguished road
Default

My car is going to be in the shop for another 8 days - the accelerator pedal is on world-wide backorder. In the meantime I've got a loaner from the dealer, but its no z. I'll now know by 9/10 what the parts or story is all about.
Unclemeaty is offline   Reply With Quote
Old 09-10-2010, 01:21 PM   #57 (permalink)
Base Member
 
Join Date: Aug 2010
Location: Atlanta
Posts: 203
Drives: 150cc Scooter
Rep Power: 15
Unclemeaty is on a distinguished road
Default

Just got the car back. Only a bit of time will officially tell the tale, but I can say two things. One, I have diagnosis from the service tech. Two, the new pedal seems to have about a 1/16 to 1/8 inch of 'slack' before the engine starts to lift off idle.

The diagnosis on the SERVICE TICKET was pretty straight forward and informative.

Quoted from service ticket:
"THROTTLE IS STICKING MEASURED .9 VOLTS OUT OF APP SENSOR DURRING INCIDENT. NORMAL VOLTAGE IS .75 VOLTS. LIFTED ACCELERATOR PEDAL AND VOLTAGE DROPPED TO .75 VOLS AND IDLE SPEED DROPPED FROM 2000 RPMS TO 800 RPMS. REPLACED THROTTLE PEDAL AND PERFORMED CLOSED THROTTLE POSITION LEARN AND IDLE AIR VOLUME LEARN."

Pedal part number (I think): 1 18002-1NC0A LEVER COMP <-FYI I think this part is different for models with touring package.


So perhaps if a dealer is giving you heck over this problem; maybe try a digital volt meter.
Unclemeaty is offline   Reply With Quote
Reply

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Traction Control joe370z Australia/New Zealand 23 02-28-2021 08:27 PM
Traction Control Question YamahaR6 Nissan 370Z General Discussions 8 07-13-2009 02:18 PM
Z's turn radius and Traction control. Forrest Nissan 370Z General Discussions 11 07-11-2009 08:17 AM
Traction Control ZSPEED Nissan 370Z General Discussions 10 06-03-2009 06:34 PM
Traction Control NOT defeatable on 7AT!?!? jmlenz Nissan 370Z General Discussions 6 06-03-2009 04:48 PM


All times are GMT -5. The time now is 12:08 AM.


Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.0 PL2