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View Full Version : LS3 reduced engine power

rich
03-29-2016, 06:05 PM
trying to determine why my ls3 conversion intermittently goes into reduced engine power mode. When the problem started I could turn off the engine and restart it and the problem would go away. I have replaced the electronic accelerator and the problem is back. Any ideas?
TheRealTC
03-29-2016, 06:50 PM
it may be running in the Regular Gas mode vs the Premium Gas Computer Map
130fe
03-30-2016, 08:23 AM
Is it giving you any codes?
rich
03-31-2016, 04:23 PM
no error codes
71RS/SS396
04-01-2016, 03:24 AM
This usually occurs when the ecu sees a difference between the commanded position ( throttle pedal position ) and the actual position of the throttle body, or a complete loss of signal from either one. I'm surprised you don't have a TAC fault of some sort. Is it possible the codes have been turned off?
My car did this intermittently, I found if the secondary safety latch on the throttle pedal plug was not locked in it would periodically loose the signal, ever since I pushed that in on the plug I haven't had a problem. I would suspect either the throttle pedal, throttle body, or wiring.
rich
06-01-2016, 06:58 PM
bought code reader. P2127 is the error code. I replaced the accelerator pedal and still have the problem. would you suggest replacing the TB or the TB electrical connector?
randy
06-01-2016, 08:17 PM
dont you need to calibrate the pedal? I know i have that option in the solous scanner. Had a chevy HHR that would do that until i replaced the pedal
rich
06-02-2016, 04:49 PM
what is the procedure to calibrate the accelerator?
TomM
06-04-2016, 08:54 AM
Try unplugging the mass air flow sensor and see if it quits doing it, if so, replace the MAF.....


T,
rich
06-22-2016, 06:06 PM
finally fixed the problem. it was a bad wire splice going to the accelerator. Glad to have that off the list.
randy
06-22-2016, 07:27 PM
finally fixed the problem. it was a bad wire splice going to the accelerator. Glad to have that off the list.

Maybe thats the reason they say on the instructions NOT to mess with those wires lol
tubbed69
06-23-2016, 04:07 AM
Rich I am so glad you found that little issue,that really sucked for all the aggravation you went thru to find it,now get out and ride it and post up some pics for us.
tubbed69
06-23-2016, 04:09 AM
Also it is time to change my pic in my avatar.