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View Full Version : 2012 ZR1 Reduced Engine Power



Fastlane
April 27th, 2012, 08:24 AM
Hey folks- first time posting..Have a 2012 ZR1 with pulley and exhaust, efilive tune. It goes into reduced engine power mode only in 1st gear when it sees tire spin. Does this with or without traction control. I have tried turning off throttle control in the tcs settings and raising torque limit. Thank you for any help...

ScarabEpic22
April 27th, 2012, 02:42 PM
Post the ECM and TCM tunes plus a log of it doing it, then we can take a look and see whats going on.

Fastlane
April 28th, 2012, 09:00 AM
Attached is the file. Pops a dtc 0641 code "5 volt reference 1 circuit" every time. Thank you for any help...
Will post a log when I can...

Redline Motorsports
April 28th, 2012, 01:33 PM
Make sure you have moved ETC air limits up and also raise the boost limits for supercharged.

Howard

odd boy
April 28th, 2012, 05:41 PM
does it throw any code?

GMPX
April 29th, 2012, 12:05 AM
5V ref circuit, that's nothing to do with the tune. The ECM is detecting a problem with the 5V feeds to the sensors, check you haven't pinched a wire when you were messing with the engine.

Fastlane
April 30th, 2012, 10:20 AM
No wires pinched. Still looking. Thank you for the help...

etmotorsports
May 1st, 2012, 02:33 PM
Could not read file could anyone else, it looks like the code is related to circuit exceeding its 5 volts feeding back to the ecm. Something should be exceeding the 5 volts on adatalog it might take a while to find it. Hope this helps if not re post log file and or tune file

joecar
May 2nd, 2012, 07:29 AM
Hi David/etm,

To read that file you need V7 build 205 and V8 build 195 (which includes firmware 2.07.27).


downloads page (http://www.efilive.com/index.php?option=com_content&view=article&id=48&Itemid=133)

etmotorsports
May 3rd, 2012, 12:25 PM
Aww that explains it didn't expect an update so soon i just updated everything at the 1st of the month efi live moves fast.

joecar
May 3rd, 2012, 12:47 PM
After you update with 205/195, any future updates will be more automated, you will simply do Help->Check for Updates and it will update if there is an update.

mbsurfersc
June 6th, 2012, 08:26 AM
Ended up being a bad Oil Pressure Sensor on a car with less than 2000 miles. Thanks for the advice though!