Sudden loss of throttle response on the highway!

Osiris · 06-24-2012, 05:48 PM

Hey ww77, i have experienced this exact same thing. My car also has an Uprev tune. Actually, i've had this happen on two separate occasions.

First time:
I got check engine lights and other lights came on in the dash. Happened multiple times. Turning car off and on did not help. Had a throttle position sensor code. The fix that time was to replace the throttle body (throttle position sensor).

Second time:
Just as you, no check engine lights or any out of normal guage readings, it just loses power out of nowhere. After turning car off and then back on, the symptoms are gone. After discussing this with my tuner, they informed me that there is a "fix" that can be installed with the Uprev tune. It basically has something to do with the MAF's relaying invalid readings to the ecu and the ecu killing power.

Check with your tuner to get the fix. If anything, get a hold of Uprev, they should have the details on this fix.

wind.zero · 06-26-2012, 12:19 PM

Quote:

Originally Posted by Osiris

After discussing this with my tuner, they informed me that there is a "fix" that can be installed with the Uprev tune. It basically has something to do with the MAF's relaying invalid readings to the ecu and the ecu killing power.

Check with your tuner to get the fix. If anything, get a hold of Uprev, they should have the details on this fix.

^^
This

Mine is at the shop for some routine maintenance and they are tweaking the tune regarding a MAF reading. I will know for sure when I pick it up this afternoon.

My problem was definitely NOT fuel starvation.

ww77 · 06-26-2012, 11:51 PM

Let me know what they say. I don't know of any Uprev tuners here in Germany. Never had a problem on Nurbergring or on roads, I drive hard everywhere I go. So to speak.

Mshayegan · 01-21-2014, 11:33 AM

Hi there,

I have a similar problem where all my lights on the tachometer light up... the abs - traction control & ESP off lights come one. I am driving in first and the throttle wont rev above a certain range. Like 4k revs. I tried to drive with it like this hoping it would reset itself, and it would sometimes jolt giving me power but it stayed like this through most of the gears.

Im guessing this is an ECU/Throttle problem?

Car: 370z 10' 40th anniversary Black Edition - Custom Stainless Steel Exhaust

Please could you get back to me!!!

06-24-2012, 05:48 PM	#1 (permalink)
Osiris A True Z Fanatic Join Date: Mar 2009 Location: http://www.cfzclub.com/ Posts: 1,524 Drives: Angry Rep Power: 21	Hey ww77, i have experienced this exact same thing. My car also has an Uprev tune. Actually, i've had this happen on two separate occasions. First time: I got check engine lights and other lights came on in the dash. Happened multiple times. Turning car off and on did not help. Had a throttle position sensor code. The fix that time was to replace the throttle body (throttle position sensor). Second time: Just as you, no check engine lights or any out of normal guage readings, it just loses power out of nowhere. After turning car off and then back on, the symptoms are gone. After discussing this with my tuner, they informed me that there is a "fix" that can be installed with the Uprev tune. It basically has something to do with the MAF's relaying invalid readings to the ecu and the ecu killing power. Check with your tuner to get the fix. If anything, get a hold of Uprev, they should have the details on this fix. GraysonMafia likes this. __________________ ^^^^^^^^^Like our Facebook!^^^^^^^^^

01-21-2014, 11:33 AM	#4 (permalink)
Mshayegan Base Member Join Date: Aug 2013 Location: Bath, UK Posts: 13 Drives: 10 Nissan 370z 40th Rep Power: 13	I have a problem Hi there, I have a similar problem where all my lights on the tachometer light up... the abs - traction control & ESP off lights come one. I am driving in first and the throttle wont rev above a certain range. Like 4k revs. I tried to drive with it like this hoping it would reset itself, and it would sometimes jolt giving me power but it stayed like this through most of the gears. Im guessing this is an ECU/Throttle problem? Car: 370z 10' 40th anniversary Black Edition - Custom Stainless Steel Exhaust Please could you get back to me!!! __________________ 2010 Nissan 370z 40th Anniversary 'Black Edition'

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06-26-2012, 11:51 PM	#3 (permalink)
ww77 Base Member Join Date: May 2011 Location: Germany Posts: 45 Drives: On the Autobahn Rep Power: 16	Let me know what they say. I don't know of any Uprev tuners here in Germany. Never had a problem on Nurbergring or on roads, I drive hard everywhere I go. So to speak.