Nissan 370Z Forum  

Car freaks out at Idle and has loss of power

I'll keep this as short and fact based as possible. Car is 2013 base model 6 speed. Supercharged it in CA and got a dyno at Church's. Life's great. Things

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


Like Tree1Likes
  • 1 Post By Jhill

Reply
 
LinkBack Thread Tools Display Modes
Old 08-08-2015, 09:20 PM   #1 (permalink)
Base Member
 
Join Date: Aug 2013
Location: Austin,TX
Posts: 125
Drives: 2013 Stillen SC MT
Rep Power: 12
Business Kat is on a distinguished road
Default Car freaks out at Idle and has loss of power

I'll keep this as short and fact based as possible. Car is 2013 base model 6 speed. Supercharged it in CA and got a dyno at Church's. Life's great. Things to keep in mind car is lowered and I've hit some nasty speed bumps along my travels. Fast forward.

January I moved to Texas. I pump 93 in my car for the first time in Texas. Start the car. a/f gauge isn't giving me a reading. Sometimes at idle the RPMs would have a small freak out but nothing bad. Every once in a while when I'm driving it felt like the car was holding back. Fast forward.

I start the car and it's choking, the revs drop really low, but once it warms up it's ok. Every once in a while at idle it'll freak out . One time I was driving and I put it in neutral because I was coming to a stop and it died. It also died another time doing the same thing. I hit a few REALLY bad speed bumps that hurt me to drive over. Heard the bottom of my car getting torn apart. A few days later I'm at a stop and my car dies and won't start.

Went to Z clinic, nothing. Went to Nissan, they said a hose had come loose. Car starts again. All idle and random loss of power problems still exist. Take it back to Z clinic. 10 days later we've realized that the car has no idea what to do at idle. All the readings are off. temp ,rpm, air flow, battery, everything is all over the place. No idea what to do. New thing the car is doing is I can't get past 5psi. I can usually get to 8 no problem, maybe even 9.

Current conclusion: reformat, download the map again, see if it works.

Looking for anyone with a similar problem, ideas, suggestions, anything. I feel so defeated at this point and it's too much money being poured into this to be fun anymore. A lot of it is a blur to me at this point and I'm not the most car savvy person but I'll do my best to answer any questions. I'm sure I missed some details. The spikes in the picture were in a 30 second period. Thank you all in advance.
Business Kat is offline   Reply With Quote
Old 08-09-2015, 07:34 AM   #2 (permalink)
Track Member
 
James10694's Avatar
 
Join Date: Oct 2013
Location: Las Vegas NV
Posts: 917
Drives: 2010 370z Nismo
Rep Power: 13
James10694 is on a distinguished road
Default

Not really FI knowledgeable but perhaps you need a retune from the elevation changes in texas etc.
__________________
Boosted Performance Single Turbo
618whp/489 tq
James10694 is offline   Reply With Quote
Old 08-09-2015, 08:31 AM   #3 (permalink)
Enthusiast Member
 
Join Date: Nov 2012
Location: Sydney
Posts: 428
Drives: 11 Nissan 370Z MB M6
Rep Power: 139
juld0zer has a reputation beyond reputejuld0zer has a reputation beyond reputejuld0zer has a reputation beyond reputejuld0zer has a reputation beyond reputejuld0zer has a reputation beyond reputejuld0zer has a reputation beyond reputejuld0zer has a reputation beyond reputejuld0zer has a reputation beyond reputejuld0zer has a reputation beyond reputejuld0zer has a reputation beyond reputejuld0zer has a reputation beyond repute
Default

Can you load the Stillen tune on to see what happens? 553600rpm??
juld0zer is offline   Reply With Quote
Old 08-09-2015, 09:33 AM   #4 (permalink)
A True Z Fanatic
 
JARblue's Avatar
 
Join Date: Mar 2011
Location: Austin, TX
Age: 43
Posts: 36,450
Drives: 11 Z34, 98 E36 M3
Rep Power: 2684440
JARblue has a reputation beyond reputeJARblue has a reputation beyond reputeJARblue has a reputation beyond reputeJARblue has a reputation beyond reputeJARblue has a reputation beyond reputeJARblue has a reputation beyond reputeJARblue has a reputation beyond reputeJARblue has a reputation beyond reputeJARblue has a reputation beyond reputeJARblue has a reputation beyond reputeJARblue has a reputation beyond repute
Default

When you say you got a dyno at Church's do you mean it was tuned by Church's? From my understanding the canned Stillen tune is pure garbage.

I would take it to Uprev here in town and see what they have to say
__________________

2011 370Z 6MT Sport Gun Metallic | ARC | CJM | Ecutek | FI | Fujimura | R2C | SPL | Stillen | TWM | Z1 | ZSpeed |
JARblue is offline   Reply With Quote
Old 08-09-2015, 09:35 AM   #5 (permalink)
A True Z Fanatic
 
JARblue's Avatar
 
Join Date: Mar 2011
Location: Austin, TX
Age: 43
Posts: 36,450
Drives: 11 Z34, 98 E36 M3
Rep Power: 2684440
JARblue has a reputation beyond reputeJARblue has a reputation beyond reputeJARblue has a reputation beyond reputeJARblue has a reputation beyond reputeJARblue has a reputation beyond reputeJARblue has a reputation beyond reputeJARblue has a reputation beyond reputeJARblue has a reputation beyond reputeJARblue has a reputation beyond reputeJARblue has a reputation beyond reputeJARblue has a reputation beyond repute
Default

Quote:
Originally Posted by juld0zer View Post
553600rpm??


I'm surprised his oil pump is still working
__________________

2011 370Z 6MT Sport Gun Metallic | ARC | CJM | Ecutek | FI | Fujimura | R2C | SPL | Stillen | TWM | Z1 | ZSpeed |
JARblue is offline   Reply With Quote
Old 08-09-2015, 03:26 PM   #6 (permalink)
Base Member
 
Join Date: Aug 2013
Location: Austin,TX
Posts: 125
Drives: 2013 Stillen SC MT
Rep Power: 12
Business Kat is on a distinguished road
Default

It was tuned at church. Stillen has been useless to me. The map they sent me is all wrong and the car doesn't run with it. I'm really disappointed with them but that's a different story. Uprev wants my first born child, the deed to the city, and unicorn blood to look at my car.

When my car died and wouldn't turn back on it was because a hose on the fuel pump came off. I just drove it this morning and the idle thing only happened once. But I still can't get past 5psi
Business Kat is offline   Reply With Quote
Old 08-09-2015, 04:45 PM   #7 (permalink)
A True Z Fanatic
 
JARblue's Avatar
 
Join Date: Mar 2011
Location: Austin, TX
Age: 43
Posts: 36,450
Drives: 11 Z34, 98 E36 M3
Rep Power: 2684440
JARblue has a reputation beyond reputeJARblue has a reputation beyond reputeJARblue has a reputation beyond reputeJARblue has a reputation beyond reputeJARblue has a reputation beyond reputeJARblue has a reputation beyond reputeJARblue has a reputation beyond reputeJARblue has a reputation beyond reputeJARblue has a reputation beyond reputeJARblue has a reputation beyond reputeJARblue has a reputation beyond repute
Default

Sorry to hear man. Hope Kevin or someone can get you squared away asap.
__________________

2011 370Z 6MT Sport Gun Metallic | ARC | CJM | Ecutek | FI | Fujimura | R2C | SPL | Stillen | TWM | Z1 | ZSpeed |
JARblue is offline   Reply With Quote
Old 08-19-2015, 02:38 PM   #8 (permalink)
Base Member
 
Join Date: Aug 2013
Location: Austin,TX
Posts: 125
Drives: 2013 Stillen SC MT
Rep Power: 12
Business Kat is on a distinguished road
Default

My car learned a new trick! I was driving on the freeway and then some lights came on and the car kept losing power. Now the car won't go over about 1500 rpms. A guy with a g35 pulled over and informed me my car is in limp mode but I after doing research I'm not sure if that's the case. There was no reason for it to go limp. One time I went to start it and it just kept turning. But then the next attempt it started up.

At this point I don't think its mechanical, I'm pretty sure it's haunted. Is it possible to hold a seance for a car?
Business Kat is offline   Reply With Quote
Old 10-14-2016, 08:22 PM   #9 (permalink)
Enthusiast Member
 
Join Date: Feb 2012
Location: Red Bluff, CA
Posts: 378
Drives: 10 Nissan 370 PG 7AT
Rep Power: 6723
harman.khinda has a reputation beyond reputeharman.khinda has a reputation beyond reputeharman.khinda has a reputation beyond reputeharman.khinda has a reputation beyond reputeharman.khinda has a reputation beyond reputeharman.khinda has a reputation beyond reputeharman.khinda has a reputation beyond reputeharman.khinda has a reputation beyond reputeharman.khinda has a reputation beyond reputeharman.khinda has a reputation beyond reputeharman.khinda has a reputation beyond repute
Default

Quote:
Originally Posted by Business Kat View Post
My car learned a new trick! I was driving on the freeway and then some lights came on and the car kept losing power. Now the car won't go over about 1500 rpms. A guy with a g35 pulled over and informed me my car is in limp mode but I after doing research I'm not sure if that's the case. There was no reason for it to go limp. One time I went to start it and it just kept turning. But then the next attempt it started up.

At this point I don't think its mechanical, I'm pretty sure it's haunted. Is it possible to hold a seance for a car?
Are your spark plugs ok and throttle body clean? My car would not start sometimes and almost die at idle before having them both serviced.

Sent from my SAMSUNG-SM-G900A using Tapatalk
harman.khinda is offline   Reply With Quote
Old 10-15-2016, 01:34 PM   #10 (permalink)
Track Member
 
Join Date: Mar 2016
Location: San jose
Posts: 854
Drives: 2013 370z sport
Rep Power: 3384
Jhill has a reputation beyond reputeJhill has a reputation beyond reputeJhill has a reputation beyond reputeJhill has a reputation beyond reputeJhill has a reputation beyond reputeJhill has a reputation beyond reputeJhill has a reputation beyond reputeJhill has a reputation beyond reputeJhill has a reputation beyond reputeJhill has a reputation beyond reputeJhill has a reputation beyond repute
Default

Sounds like you have a grounding issue somewhere. If all you sensors reading are all over the place then it needs to be something shared. If the pcm logic ground is off then all sensor readings will be off too. Need to start checking your data values, reference voltages and voltage drops. You can try a seance but electrical gremlins are pretty immune to them.
wideglideleon likes this.
Jhill 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
decreased power loss of power simota1 Engine & Drivetrain 96 10-28-2019 08:10 PM
Power Loss At Start-Up DavidB123 Nismo 370Z 39 05-01-2018 01:24 PM
possible loss of power? smoothtransit Engine & Drivetrain 12 01-28-2015 03:29 AM
Power loss whoLEEoh Intake/Exhaust 31 04-16-2012 09:44 PM
Loss of power / Idle shake Cyberium Nissan 370Z General Discussions 14 07-11-2011 10:01 AM


All times are GMT -5. The time now is 02:47 PM.


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